[go: up one dir, main page]

WO2022165842A1 - Procédé de transmission de signal, dispositif électronique et support de stockage - Google Patents

Procédé de transmission de signal, dispositif électronique et support de stockage Download PDF

Info

Publication number
WO2022165842A1
WO2022165842A1 PCT/CN2021/076036 CN2021076036W WO2022165842A1 WO 2022165842 A1 WO2022165842 A1 WO 2022165842A1 CN 2021076036 W CN2021076036 W CN 2021076036W WO 2022165842 A1 WO2022165842 A1 WO 2022165842A1
Authority
WO
WIPO (PCT)
Prior art keywords
electronic device
phase
carrier signal
modulated signal
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/076036
Other languages
English (en)
Chinese (zh)
Inventor
魏建勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Goodix Technology Co Ltd
Original Assignee
Shenzhen Goodix Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Priority to PCT/CN2021/076036 priority Critical patent/WO2022165842A1/fr
Publication of WO2022165842A1 publication Critical patent/WO2022165842A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a signal transmission method, an electronic device, and a storage medium.
  • NFC Near Field Communication
  • Radio Frequency Identification Radio Frequency Identification
  • PCD Proximity Coupling Device
  • PICC Proximity Integrated Circuit Card
  • Embodiments of the present application provide a signal transmission method, an electronic device, and a storage medium, so as to provide a signal transmission method.
  • an embodiment of the present application provides a signal transmission method, which is applied to a second electronic device, where the second electronic device includes a second transceiver link for transmitting and receiving signals, and the impedance of the second transceiver link is adjustable ,include:
  • the impedance of the second transceiving link is adjusted respectively at multiple different times, so that the second transceiving link correspondingly has multiple different impedances at multiple different times.
  • the multiple first carrier signals sent by the first electronic device are respectively received, and the multiple first carrier signals received by the second electronic device are obtained.
  • the mapping relationship between the phase deviation and the impedance is determined; wherein the phase deviation is used to characterize the first carrier signal sent by the first electronic device and the second Phase difference between the first carrier signals received by the electronic device.
  • the current impedance of the second transceiver link is acquired, and the current phase deviation is determined based on the current impedance and the mapping relationship.
  • the obtained second modulated signal is sent to the first electronic device.
  • phase compensation is performed on the carrier signal to be sent by the PICC side based on the phase deviation, so that the PICC side can be eliminated.
  • the phase deviation caused by the transmitted carrier signal on the PCD side can further improve the communication quality.
  • respectively adjusting the impedance of the second transceiver link at multiple different times includes:
  • the convenience of impedance adjustment can be improved.
  • the second transceiving link includes an initial impedance
  • periodically adjusting the impedance of the second transceiving link within a preset time period includes:
  • the impedance of the second transceiving link is adjusted respectively in two cycles within the preset time period, wherein the three impedances include the initial impedance and the two adjusted impedances.
  • periodically adjusting the impedance of the second transceiver link within a preset time period includes:
  • the impedances of the second transceiver link are respectively adjusted in three cycles within the preset time period, wherein the three impedances include three adjusted impedances.
  • One of the possible implementations also includes:
  • the phase difference between the modulated signal and the carrier signal can be effectively obtained.
  • the second electronic device includes a clock module, and the 0-phase moment of the first carrier signal received by the second electronic device is sampled by the clock module. get.
  • the sampling performed by the clock module includes:
  • the first carrier signal received by the second electronic device is sampled to obtain the 0-phase moment of the first carrier signal received by the second electronic device.
  • the method before performing phase compensation on the second modulated signal based on the phase deviation, the method further includes:
  • Phase compensation is performed on the second modulated signal based on the phase difference.
  • the influence caused by the phase deviation of the second modulated signal received on the PCD side can be effectively reduced, thereby further improving communication quality.
  • performing phase compensation on the second modulated signal based on the phase deviation includes:
  • phase deviations between the PCD and the PICC and between the PICC and the PCD are the same. Therefore, compensating twice the phase deviation for the second modulated signal can effectively reduce the The influence of the phase deviation on the modulated signal, which in turn can improve the communication quality.
  • the first electronic device includes a first transceiving link for transceiving signals, and the first transceiving link and the second transceiving link form an equivalent chain for signal transmission Road, based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device, determining the mapping relationship between the phase deviation and the impedance specifically includes:
  • the coefficients of the equivalent link are determined based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device, and the mapping relationship is represented by a formula including the coefficients.
  • the frequency of the first carrier signal and the second carrier signal are the same.
  • an embodiment of the present application provides a signal transmission apparatus, which is applied to a second electronic device.
  • the second electronic device includes a second transceiver link for transmitting and receiving signals, and the impedance of the second transceiver link is adjustable, including:
  • an adjustment module configured to adjust the impedance of the second transceiver link at multiple different times, so that the second transceiver link has different multiple impedances at multiple different times;
  • a receiving module configured to respectively receive a plurality of first carrier signals sent by the first electronic device when the second transceiver link has a plurality of different impedances, and obtain a plurality of first carrier signals received by the second electronic device;
  • the first determination module is configured to determine the mapping relationship between the phase deviation and the impedance based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device; wherein the phase deviation is used to characterize the signal sent by the first electronic device. a phase difference value between the first carrier signal and the first carrier signal received by the second electronic device;
  • a calculation module configured to obtain the current impedance of the second transceiver link, and determine the current phase deviation based on the current impedance and the mapping relationship;
  • the first compensation module is used to obtain the second carrier signal and the second modulation signal, modulate the second modulation signal on the second carrier signal, and obtain the second modulated signal; based on the current phase deviation, the second modulated signal is phased compensate,
  • the sending module is used for sending the second modulated signal obtained after the phase compensation to the first electronic device.
  • the above adjustment module is further configured to periodically adjust the impedance of the second transceiving link within a preset time period.
  • the second transceiver link includes an initial impedance
  • the adjustment module is further configured to adjust the impedance of the second transceiver link in two cycles within a preset time period, wherein the three impedances include Initial impedance and two adjusted impedances.
  • the adjustment module is further configured to adjust the impedance of the second transceiver link in three cycles within a preset time period, wherein the three impedances include three adjustment impedances.
  • the above-mentioned device further includes:
  • the second determining module is configured to respectively receive multiple first modulated signals sent by the first electronic device at different times, and obtain multiple first modulated signals received by the second electronic device, wherein the first modulated signals sent by the first electronic device are The plurality of first modulated signals include the first carrier signal and the first modulated signal sent by the first electronic device, and the first modulated signal received by the second electronic device includes the first carrier signal and the first modulated signal received by the second electronic device.
  • a modulated signal obtain the 0-phase moment of the first carrier signal received by the second electronic device and the frame start point moment of the first modulated signal received by the second electronic device, based on the first carrier signal received by the second electronic device.
  • the 0 phase moment of the second electronic device and the frame start point moment of the first modulated signal received by the second electronic device determine the phase difference, wherein the phase difference is used to characterize the first carrier signal received by the second electronic device and the second electronic device. The phase difference between the received first modulated signals.
  • the above-mentioned device further includes:
  • the clock module is configured to sample the first carrier signal received by the second electronic device to obtain the 0-phase moment of the first carrier signal received by the second electronic device.
  • the above clock module is also used to perform n-multiplier on the sampling frequency, where n is a constant, and n is determined by the precision of the phase deviation; sampling to obtain the 0-phase moment of the first carrier signal received by the second electronic device.
  • the above-mentioned device further includes:
  • the second compensation module is configured to perform phase compensation on the second modulated signal based on the phase difference.
  • the above-mentioned first compensation module is further configured to advance the phase of the second modulated signal by twice the phase deviation.
  • the first electronic device includes a first transceiving link for transceiving signals, the first transceiving link and the second transceiving link form an equivalent link for signal transmission, and the first determining module above It is also used to determine the coefficients of the equivalent link based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device, and the mapping relationship is represented by a formula including the coefficients.
  • the frequency of the first carrier signal and the second carrier signal are the same.
  • an embodiment of the present application provides a second electronic device, where the second electronic device includes a second transceiver link for transmitting and receiving signals, and the impedance of the second transceiver link is adjustable, including:
  • Memory used to store computer program code
  • the computer program code includes instructions, when the second electronic device reads the instructions from the memory, so that the second electronic device performs the following steps:
  • the mapping relationship between the phase deviation and the impedance is determined; wherein the phase deviation is used to characterize the first carrier signal sent by the first electronic device and the second the phase difference value between the first carrier signals received by the electronic device;
  • Phase compensation is performed on the second modulated signal based on the current phase deviation, and the second modulated signal obtained after the phase compensation is sent to the first electronic device.
  • the step of causing the above-mentioned second electronic device to perform the step of adjusting the impedance of the second transceiving link respectively at multiple different times includes:
  • the second transceiving link includes an initial impedance, and when the instruction is executed by the second electronic device, the second electronic device executes and periodically adjusts the second transceiving chain within a preset period of time.
  • the steps of circuit impedance include:
  • the impedance of the second transceiving link is adjusted respectively in two cycles within the preset time period, wherein the three impedances include the initial impedance and the two adjusted impedances.
  • causing the above-mentioned second electronic device to perform the step of periodically adjusting the impedance of the second transceiving link within a preset time period includes:
  • the impedances of the second transceiver link are respectively adjusted in three cycles within the preset time period, wherein the three impedances include three adjusted impedances.
  • the above-mentioned second electronic device when executed by the above-mentioned second electronic device, the above-mentioned second electronic device further executes the following steps:
  • the second electronic device includes a clock module, and the 0-phase moment of the first carrier signal received by the second electronic device is obtained after sampling by the clock module.
  • the step of causing the above-mentioned second electronic device to execute the clock module to perform sampling includes:
  • the first carrier signal received by the second electronic device is sampled to obtain the 0-phase moment of the first carrier signal received by the second electronic device.
  • Phase compensation is performed on the second modulated signal based on the phase difference.
  • the step of causing the above-mentioned second electronic device to perform phase compensation on the second modulated signal based on the phase deviation includes:
  • the first electronic device includes a first transceiving link for transceiving signals, the first transceiving link and the second transceiving link form an equivalent link for signal transmission, and the above-mentioned instruction is executed by the above-mentioned first transceiving link.
  • the step of determining the mapping relationship between the phase deviation and the impedance based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device includes:
  • the coefficients of the equivalent link are determined based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device, and the mapping relationship is represented by a formula including the coefficients.
  • the frequency of the first carrier signal and the second carrier signal are the same.
  • an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when it runs on a computer, causes the computer to execute the method described in the first aspect.
  • an embodiment of the present application provides a computer program, which is used to execute the method described in the first aspect when the computer program is executed by a computer.
  • the program in the fifth aspect may be stored in whole or in part on a storage medium packaged with the processor, and may also be stored in part or in part in a memory not packaged with the processor.
  • FIG. 1 is a schematic diagram of signal transceiving provided by an embodiment of the present application
  • FIG. 2 is a waveform diagram of a transmission signal provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a phase deviation between a received signal and a transmitted signal according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a signal transmission method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of an equivalent link provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a phase difference provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of frequency multiplication of a clock sampling frequency provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of calculating a phase difference between a modulated signal and a carrier signal according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of phase compensation of a modulated signal provided by an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a carrier signal phase compensation provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a signal transmission apparatus provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
  • a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plural means two or more.
  • the above-mentioned devices may include electronic devices such as PCD and PICC.
  • the PCD and the PICC communicate through modulated signals. Since the modulated signal is usually a low-frequency signal, which is not conducive to transmission, the modulated signal is usually modulated on a high-frequency carrier signal for transmission.
  • the PCD can modulate the modulated signal on the carrier signal and send it to the PICC, and the PICC can also modulate the modulated signal on the carrier signal and send the modulated signal to the PICC, thereby implementing communication between the PCD and the PICC.
  • the above wireless link may include a transceiver circuit on the PCD side, such as an EMC and matching circuit on the PCD side, and a transceiver circuit on the PICC side, such as an EMC and matching circuit on the PICC side.
  • the PICC side will use a carrier with the same frequency and phase as the carrier received by the PICC, that is to say, the carrier signal sent by the PICC side has the same frequency and phase as the carrier signal received by the PICC side and sent by the PCD, and can
  • the modulated signal on the PICC side is modulated on the carrier wave sent by the PICC side, so that the PCD side can perform demodulation according to the carrier signal sent by the PICC side, so as to realize smooth communication between the PCD and the PICC.
  • the carrier signal between the PCD and the PICC has a phase deviation
  • the PCD receives the carrier signal sent by the PICC
  • the phase deviation will affect the amplitude of the received signal (for example, weaken or reverse)
  • the This adversely affects the demodulation of the PCD, which in turn may result in a loss of communication between the PCD and the PICC.
  • FIG. 1 is a schematic diagram of the communication between the PCD and the PICC.
  • the PCD side includes a transmitter 11 , a receiver 12 , a transceiver circuit 13 and an antenna 14 .
  • the transmitter 11 can be used to generate a carrier signal on the PCD side (for the convenience of description, the carrier signal sent by the PCD side is hereinafter referred to as a "first carrier signal") and a modulated signal sent by the PCD side (for the convenience of description, the following will be
  • the modulated signal sent by the PCD side is called the "first modulated signal", and the first modulated signal can be modulated on the first carrier signal, so that the modulated signal sent by the PCD side can be obtained (for the convenience of description, the PCD side
  • the transmitted modulated signal is called "first modulated signal”); it is understood that the above-mentioned first modulated signal may be a modulated carrier signal, and the first modulated signal and the first carrier signal have the same frequency and phase
  • the receiver 12 can be used
  • the modulated signal sent by the PICC side is referred to as the "second modulation signal"
  • the transceiver circuit 13 can be used for the first modulated signal sent by the PCD side and the second modulated signal received by the PCD side.
  • the modulated signal is processed, for example, electromagnetic compatibility, etc.; the antenna 14 is used for receiving the second modulated signal sent by the PICC and sending the first modulated signal on the PCD side.
  • the PICC side includes a transmitter 21 , a receiver 22 , a transceiver circuit 23 , an antenna 24 and a clock 25 .
  • the receiver 22 can be used to separate the first modulated signal received by the PICC side, thereby obtaining the first modulated signal received by the PICC side. It can be understood that the above separation process can be performed by the receiver 22 The first carrier signal in the first modulated signal received by the PICC side is removed, and the first modulated signal received by the PICC side is retained; the transmitter 21 can be used to modulate the second modulated signal sent by the PICC side on the PICC side.
  • the second carrier signal sent On the second carrier signal sent, the second carrier signal sent by the PICC side has the same frequency as the first carrier signal received by the PICC side, so that the second modulated signal sent by the PICC side can be obtained; it is understandable Yes, the second modulated signal may be a modulated carrier signal, and the second modulated signal and the second carrier signal sent by the PICC side have the same frequency and phase.
  • the transceiver circuit 23 can be used to process the second modulated signal sent by the PICC side and the first modulated signal received by the PICC side, for example, electromagnetic compatibility, etc.; the antenna 24 is used to receive the first modulated signal sent by the PCD and A second modulated signal is sent; clock 25 is used to generate the local clock.
  • the transmitter 11 of the PCD After the transmitter 11 of the PCD generates the first carrier signal (for example, it may be a carrier signal of 0 phase), it sends it to the PICC, and after processing by the transceiver link, the receiver 22 of the PICC receives the above-mentioned first carrier signal and transmits it to the PICC. demodulate.
  • the above-mentioned transceiver link may include a transceiver circuit 13 , an antenna 14 , a transceiver circuit 23 and an antenna 24 .
  • the first carrier signal received by the receiver 22 and the first carrier signal generated by the transmitter 11 may have a phase deviation (for example, the phase deviation is ⁇ ), that is, the receiver 22 of the PICC
  • the PICC can use the second carrier signal with the same frequency and phase as the first carrier signal received, and can modulate the second modulation signal to be sent by the PICC side on the second carrier signal to be sent by the PICC side superior. It can be understood that the phase deviation of the second carrier signal to be sent by the PICC side and the first carrier signal sent by the PCD side is ⁇ .
  • the device link of NFC is usually symmetrical, that is to say, when the PICC sends the carrier signal to the PCD, the same phase deviation (for example, the phase deviation is ⁇ ) will also be generated.
  • the PICC sends the second modulated signal to be sent by the PICC side to the PCD through the transmitter 21 , where the second modulated signal sent by the PICC includes a second carrier signal with a phase of ⁇ .
  • the phase of the second modulated signal received by the PCD receiver 12 is the same as the one sent by the PICC due to the phase deviation caused by the link.
  • the phase deviation of the second modulated signal is also ⁇ .
  • phase of the second modulated signal received by the receiver 12 of the PCD is offset from the phase of the first carrier signal sent by the transmitter 11 of the PCD by 2* ⁇ .
  • the PCD sends the first modulated signal to the PICC, a phase deviation similar to the above will also be generated.
  • FIG. 2 is a waveform diagram of the first carrier signal sent by the PCD side and the second modulated signal sent by the PICC side.
  • FIG. 3 is a waveform diagram of the second modulated signal received by the PCD side.
  • the waveform 310 represents a waveform with a phase deviation of 0 degrees.
  • the waveform 310 represents the second modulated signal received by the PCD, and the phase difference between it and the first carrier signal sent by the PCD is 0. Because The phase difference between the second modulated signal and the first carrier signal is equal to the phase difference between the second modulated signal and the first carrier signal, which means that the phase difference between the second modulated signal and the first carrier signal is 0 , at this time, it means that the system is in an ideal state, and there is no phase difference between PCD and PICC.
  • waveform 320 is a waveform with a phase deviation of 45 degrees, indicating that the phase difference between the second modulated signal received by the PCD and the first carrier signal sent by the PCD side is 45 degrees;
  • waveform 330 is a waveform with a phase deviation of 90 degrees Figure;
  • waveform 340 is a waveform diagram with a phase deviation of 180 degrees.
  • the phase deviation is 0, 45 or 90 degrees, the amplitude of the second modulated signal received by the PCD does not fluctuate significantly, while when the phase deviation is 180 degrees, the second modulated signal received by the PCD is 180 degrees.
  • the amplitude of the modulated signal is reversed, which will seriously affect the demodulation of the PCD.
  • the carrier signal between the PCD and the PICC generally produces a relatively serious phase deviation.
  • an embodiment of the present application proposes a signal transmission method.
  • the phase deviation of the carrier signal generated in the link processing can be eliminated, and the communication caused by the phase deviation can be avoided. reduction in efficiency.
  • FIG. 4 is an application scenario of an embodiment of the present application.
  • the above application scenario includes a first electronic device 410 and a second electronic device 420 .
  • the first electronic device 410 may be the aforementioned PCD (eg, a gate, etc.)
  • the second electronic device 420 may be the aforementioned PICC (eg, a mobile phone, etc.).
  • the PCD can also be a mobile phone working in a card reader mode
  • the PICC can be a mobile phone or other electronic device working in a card emulation mode.
  • the embodiments of the present application do not specifically limit the specific forms of the first electronic device 410 and the second electronic device 420 for implementing the technical solution. It can be understood that the embodiments of the present application may be applied to an NFC scenario, for example, the first electronic device 410 and the second electronic device 420 may communicate through NFC. The embodiments of the present application may also be applied to other short-range communication scenarios, for example, communication between the first electronic device 410 and the second electronic device 420 may be performed by means of RFID. This embodiment of the present application does not specifically limit the short-range communication manner.
  • FIG. 5 is a schematic flowchart of an embodiment of the signal transmission method provided by the embodiment of the present application.
  • the steps to be performed by the PCD and the PICC at different stages are integrated into the steps of the process according to the timeline.
  • the signal transmission method provided by the embodiment of the application performs
  • the main body is mainly PICC:
  • Step 101 the first electronic device 410 sends a first carrier signal to the second electronic device 420 .
  • the first electronic device 410 can periodically send the first carrier signal to the second electronic device 420, that is, it can complete multiple cycles in multiple cycles.
  • the period can be preset.
  • the size of the period is not particularly limited in this application. It can be understood that, the above-mentioned periodic sending method is only illustrative of the sending method of the first carrier signal of the first electronic device 410, and the first electronic device 410 can also send the first electronic device 420 to the second electronic device 420 in an aperiodic manner. carrier signal.
  • the foregoing manner in which the first electronic device 410 sends the first carrier signal to the second electronic device 420 does not constitute a limitation to the embodiments of the present application.
  • Step 102 the second electronic device 420 adjusts the impedance of the second transceiving link, and receives the first carrier signal sent by the first electronic device 410, based on the first carrier signal received by the second electronic device 420 and the second transceiving link The impedance determines the equivalent link.
  • the second electronic device 420 may receive multiple first carrier signals sent by the first electronic device 410 within a preset time period.
  • the above-mentioned preset time period may be determined according to the period at which the above-mentioned first electronic device 410 sends the first carrier signal. It can be understood that, within the above-mentioned preset time period, the second electronic device 420 can receive multiple first carrier signals periodically sent by the first electronic device 410, and the second electronic device 420 can also receive the first electronic device 410 aperiodically.
  • the manner in which the second electronic device 420 receives the first carrier signal sent by the first electronic device 410 does not constitute a limitation on the embodiments of the present application.
  • the second electronic device 420 may respectively receive the first carrier signal sent by the first electronic device 410 at different times within the foregoing preset time period.
  • the second electronic device 420 may receive the first carrier signal s1 at time t1
  • the second electronic device 420 may receive the first carrier signal s2 at time t2
  • the second electronic device 420 may receive the first carrier signal s2 at time t3.
  • the phase deviation of the signal is caused by the transceiving link of the first electronic device 410 and the transceiving link of the second electronic device 420 . Therefore, in order to calculate the phase deviation of the carrier signal, an equivalent link can be simulated, and the equivalent link can include the transceiving link (first transceiving link) of the first electronic device 410 and the transceiving link of the second electronic device 420 link (second transceiver link). Therefore, after the second electronic device 420 receives the first carrier signal sent by the first electronic device 410, it can be determined based on the equivalent link that the first carrier signal sent by the first electronic device 410 is received by the second electronic device 420.
  • FIG. 6 is a schematic diagram of an equivalent link structure between the PCD and the PICC.
  • the equivalent link g( ⁇ ) can be expressed by the following formula:
  • mapping relationship between the first carrier signal St sent by the first electronic device 410 and the first carrier signal Sr received by the second electronic device 420 can be obtained through the above equivalent link, and the mapping relationship can be expressed by the following formula :
  • ⁇ is the phase deviation between the first carrier signal St sent by the first electronic device 410 and the first carrier signal Sr received by the second electronic device 420 . It can be understood that, since the equivalent link has symmetry, the ⁇ can also be the phase between the second carrier signal sent by the second electronic device 420 and the second carrier signal received by the first electronic device 410 deviation.
  • phase deviation ⁇ is related to the equivalent resistance R on the PICC side.
  • the second electronic device 420 may change the impedance of the equivalent resistance R.
  • the second electronic device 420 may periodically change the impedance of the equivalent resistance R within a preset time period.
  • the second electronic device 420 can change the impedance of the equivalent resistance R at three different times, for example, time t1', time t2', and time t3', so that the equivalent resistances at three different times can be obtained respectively.
  • the impedance of R eg, R1, R2, and R3. It can be understood that, after the first carrier signal sent by the first electronic device 410 at the above three different times is processed by the equivalent resistance R of different values, the second electronic device 420 can respectively receive three different phases of the first carrier signal.
  • the first carrier signal exemplarily, the impedance R1 of the equivalent resistance R at time t1' corresponds to the first carrier signal s1 at time t1, and the first carrier signal s1 may have a phase ⁇ 1 ;
  • the impedance R2 corresponds to the first carrier signal s2 at time t2, and the first carrier signal s2 may have a phase ⁇ 2 ;
  • the impedance R3 of the equivalent resistance R at time t3' corresponds to the first carrier signal s3 at time t3, and the first carrier signal s3 may has phase ⁇ 3 .
  • the second electronic device 420 can also change the impedance of the equivalent resistance R at different times in an aperiodic manner.
  • the second electronic device 420 may change the impedance of the equivalent resistance R after receiving the first carrier signal sent by the first electronic device 410 .
  • ⁇ 1 - ⁇ 2 is the phase difference between the first carrier signal s1 and the first carrier signal s2 after passing through the equivalent link
  • ⁇ 2 - ⁇ 3 is the phase difference between the first carrier signal s1 and the first carrier signal after passing through the equivalent link
  • the above-mentioned phase difference can be obtained by the above-mentioned clock 205 .
  • FIG. 7 is a schematic diagram of the phase difference. As shown in FIG.
  • waveform 700 is the first carrier signal sent by the PCD side
  • waveform 710 may be the first carrier signal s1 received by the PICC side at time t1
  • waveform 720 may be the first carrier signal received by the PICC side at time t2 s
  • the waveform 730 may be the first carrier signal s3 received by the PICC side at time t3.
  • the phase deviation between waveform 710 and waveform 700 is ⁇ 1
  • the phase deviation between waveform 720 and waveform 700 is ⁇ 2
  • the phase deviation between waveform 730 and waveform 700 is ⁇ 3
  • the phase difference between waveform 710 and waveform 720 is ⁇ 1 - ⁇ 2
  • the phase difference between waveform 720 and waveform 730 is ⁇ 2 - ⁇ 3 .
  • the above-mentioned changing the impedance of the equivalent resistance R at three different times is only an exemplary example, and does not constitute a limitation to the embodiments of the present application.
  • the impedance of the equivalent resistance R (for example, R1 and R2 ) can also be changed at two different moments, so that it is also possible to obtain Impedance at three different times (eg, R0, R1, and R2).
  • the 0-degree phase time can be obtained by the local clock.
  • the local clock may be a voltage-controlled oscillator (Voltage-Controlled Oscillator, VCO), or may be implemented by other devices, which is not particularly limited in this embodiment of the present application.
  • VCO Voltage-Controlled Oscillator
  • the 0-degree phase moment of the waveform 710 is P1
  • the 0-degree phase moment of the waveform 720 is P2
  • the 0-degree phase moment of the waveform 710 is P3, so it can be calculated according to P1 and P2 ⁇ 1 - ⁇ 2 is obtained, and ⁇ 2 - ⁇ 3 can be calculated from P2 and P3. It can be understood that ⁇ 1 - ⁇ 2 is the phase difference between the waveform 710 and the waveform 720.
  • the time difference can be P1-P2
  • ⁇ 1 - ⁇ 2 can be obtained through the values of P1-P2
  • ⁇ 2 - ⁇ 3 can also be obtained by calculating the values of P2-P3.
  • the sampling frequency of the local clock can also be multiplied to increase the sampling frequency of the local clock, so that the above waveform can be obtained more accurately.
  • the 0-phase moment in and then the calculation accuracy of the phase deviation can be improved.
  • the multiplier may be n, and the value of n may be preset. Exemplarily, the value of n may depend on the precision of the phase deviation. Preferably, the value of n may be 384.
  • a waveform 800 is a schematic diagram of a waveform before the local clock frequency multiplication
  • a waveform 810 is a schematic diagram of a waveform after the local clock frequency multiplication.
  • phase deviation calculation formula represents the phase deviation generated by the first carrier signal sent by the PCD side after passing through the equivalent link.
  • the above phase deviation calculation formula can also represent the phase deviation generated by the second carrier signal sent by the PICC side after passing through the equivalent link.
  • the phase of the second modulated signal sent by the PICC side is the same as the phase of the second carrier signal sent by the PICC side. Therefore, the above phase deviation calculation formula can also indicate that the second modulated signal sent by the PICC side has the same phase. The phase deviation produced by the second modulated signal after passing through the equivalent link.
  • Step 103 the second electronic device 420 determines the phase deviation of the carrier signal based on the equivalent link.
  • the working state of the second electronic device 420 can be obtained.
  • the working state may be used to characterize the current impedance of the equivalent resistance R in the second electronic device 420 .
  • the current impedance of the equivalent resistance R may be a value at the initial moment, for example, R0; the current impedance of the equivalent resistance R may also be a value at other moments, such as R1 or R2, etc.
  • the phase deviation of the carrier signal can be calculated.
  • the phase deviation generated on the PICC side after a carrier signal passes through the equivalent link, that is, the phase deviation of the carrier signal is the phase between the first carrier signal sent by the PCD side and the first carrier signal received by the PICC side difference. Therefore, phase compensation can be performed on the second carrier signal based on the phase deviation of the carrier signal, so as to eliminate the phase deviation of the second carrier signal during the communication process.
  • the current impedance of the equivalent resistance R in the second electronic device 420 is another value, exemplarily, the value may be R1, R2 or R3, etc., then the above R1, R2 or R3 can be substituted into the above formula (6), thus The phase deviation of the carrier signal of the second electronic device 420 when the impedance of the equivalent resistance R is R1, R2 or R3 can be calculated.
  • Step 104 the first electronic device 410 sends the first modulated signal to the second electronic device 420 .
  • the first electronic device 410 may also send the first modulated signal to the second electronic device 420 .
  • the first modulated signal sent by the first electronic device 410 includes the first carrier signal sent by the first electronic device 410 and the first modulated signal sent by the first electronic device 410.
  • the first electronic device 410 can The sent first modulated signal is modulated on the first carrier signal sent by the first electronic device 410 , thereby obtaining the first modulated signal sent by the first electronic device 410 .
  • Step 105 the second electronic device 420 receives the first modulated signal sent by the first electronic device 410, and determines the phase difference between the first carrier signal and the first modulated signal based on the received first modulated signal.
  • the second electronic device 420 can separate the first modulated signal received by the second electronic device 420, thereby obtaining the second modulated signal.
  • the first carrier signal and the first modulated signal in the first modulated signal received by the electronic device 420 may be implemented by a mixer or by other devices, which is not limited in this embodiment of the present application.
  • the second electronic device 420 may determine the frame start point (Start of Frame, SOF) of the first modulated signal received by the second electronic device 420 through the threshold decider. It is understood that the above threshold decider is only exemplary The method for determining the frame start point is shown, which does not constitute a limitation to the embodiments of the present application. In some embodiments, the frame start point may also be determined by other methods.
  • SOF Start of Frame
  • the second electronic device 420 can also detect the 0-phase moment of the first carrier signal received by the above-mentioned second electronic device 420 through the local clock, thereby obtaining the 0-phase moment. It can be understood that the second electronic device 420 can also detect the 0-phase moment of the first carrier signal received by the second electronic device 420 after multiplying the sampling frequency of the local clock. For the detection method of the above-mentioned 0-phase moment, reference may be made to step 102, which will not be repeated here.
  • the frame start point of the first modulated signal received by the second electronic device 420 can be The frame start point of the first modulated signal and the 0-phase moment of the first carrier signal received by the second electronic device 420 are calculated to obtain the first modulated signal received by the second electronic device 420 and the first modulated signal received by the second electronic device 420.
  • the phase difference between a carrier signal is a carrier signal.
  • the first electronic device 410 can be calculated The phase difference between the received second modulated signal and the second carrier signal received by the first electronic device 410, so that the phase compensation can be performed on the second modulated signal sent by the second electronic device 420 based on the phase difference, to The phase difference generated during the transmission process between the second modulated signal sent by the second electronic device 420 and the second carrier signal sent by the second electronic device 420 is eliminated.
  • FIG. 9 is a schematic diagram of phase difference calculation.
  • waveform 900 is the waveform of the first carrier signal received by the second electronic device 420
  • waveform 910 is the waveform of the first modulation signal received by the second electronic device 420
  • waveform 920 is the frequency multiplication of the local clock waveform
  • waveform 930 is the waveform of the threshold decider.
  • the 0-phase time Q1 of the waveform 900 can be detected by the waveform 920
  • the frame start point Q2 in the waveform 910 can be detected by the waveform 930 .
  • the phase difference between the first modulated signal received by the second electronic device 420 and the first carrier signal received by the second electronic device 420 can be determined.
  • the value of Q1-Q2 can be calculated through mathematics.
  • the phase difference between the first modulated signal received by the second electronic device 420 and the first carrier signal received by the second electronic device 420 is obtained by conversion.
  • Step 106 the second electronic device 420 performs phase compensation on the second modulated signal based on the phase difference between the carrier signal and the modulated signal, and performs phase compensation on the second modulated signal based on the phase deviation of the carrier signal.
  • the second electronic device 420 can determine the data to be sent by the second electronic device 420 based on the phase difference between the carrier signal and the modulated signal.
  • the second modulated signal is phase compensated.
  • the phase compensation of the second modulated signal to be sent by the second electronic device 420 may be to adjust the second modulated signal to be sent by the second electronic device 420 based on the phase difference between the carrier signal and the modulated signal phase, modulate the phase-adjusted second modulated signal on the second carrier signal to be sent by the second electronic device 420 , thereby obtaining the second modulated signal to be sent by the second electronic device 420 .
  • the second carrier signal to be sent by the second electronic device 420 may be a carrier signal of the same frequency and phase as the first carrier signal received by the second electronic device 420, that is, the second electronic device 420 to be
  • the sent second carrier signal has the same frequency and phase as the first carrier signal received by the second electronic device 420, and the second carrier signal to be sent by the second electronic device 420 is the same as the first carrier signal sent by the first electronic device 410.
  • a carrier signal has the same frequency but different phases.
  • the waveform 1000 is the waveform of the second carrier signal to be sent by the second electronic device 420
  • the waveform 1010 is the waveform of the second modulation signal to be sent by the second electronic device 420 . Since the phase difference between the first carrier signal received by the second electronic device 420 and the first modulated signal received by the second electronic device 420 is ⁇ , the first carrier signal received by the second electronic device 420 and the The phase difference ⁇ of the first modulated signal received by the second electronic device 420 performs phase compensation on the second modulated signal (eg, waveform 1010 ) to be sent by the second electronic device 420 .
  • the second modulated signal eg, waveform 1010
  • the phase of the waveform 1000 may be used as a reference, and the waveform 1010 may be advanced by ⁇ phase based on the waveform 1000, thereby obtaining the waveform 1020, which is the phase-compensated second electronic device 420 to be sent. the second modulated signal.
  • the second electronic device 410 can There is no longer a phase difference between the second modulated signal sent by the device 420 and the second carrier signal sent by the second electronic device 420, so that the second modulated signal sent by the second electronic device 420 and the second modulated signal sent by the second electronic device 420 can be eliminated. Influenced by the phase difference between the second carrier signals, the first electronic device 410 can smoothly demodulate the second modulated signal sent by the second electronic device 420.
  • the second electronic device 420 may modulate the second modulation signal to be sent by the second electronic device 420 on the second carrier signal to be sent by the second electronic device 420 ; for example, the waveform 1020 may be modulated on the waveform 1000 , so that the second modulated signal to be sent by the second electronic device 420 can be obtained, and phase compensation can be performed on the second modulated signal to be sent by the second electronic device 420 based on the phase deviation of the carrier signal.
  • the phase of the second modulated signal to be sent by the second electronic device 420 can be adjusted based on the phase deviation of the carrier signal, thereby eliminating the phase deviation brought by the above link to the second carrier signal.
  • waveform 1100 is the waveform of the first carrier signal sent by the first electronic device 410
  • waveform 1110 is the waveform of the first carrier signal received by the second electronic device 420
  • waveform 1120 is the waveform of the first carrier signal received by the second electronic device 420 .
  • the phase deviation of the first carrier signal sent by the first electronic device 410 and the first carrier signal received by the second electronic device 420 is ⁇
  • the second modulated signal sent by the second electronic device 420 is transmitted by the second electronic device 420
  • the received first carrier signal is obtained by modulation, that is, the phase of the second modulated signal to be sent by the second electronic device 420 is the same as the phase of the first carrier signal received by the second electronic device. Therefore, the second modulated signal (for example, waveform 1120 ) to be sent by the second electronic device 420 can be advanced by 2* ⁇ phase based on the second carrier signal to be sent by the second electronic device 420 , at this time, it can be obtained Phase compensated second modulated signal (eg, waveform 1130).
  • the phase deviation of the second modulated signal sent by the second electronic device 420 has been compensated, that is to say , the phase of the second carrier signal in the second modulated signal received by the first electronic device 410 is consistent with the phase of the first carrier signal sent by the first electronic device 410 , so that the first electronic device 410 can demodulate correctly.
  • the compensated phase deviation may include the phase deviation ⁇ caused when the first electronic device 410 sends the first carrier signal to the second electronic device 420 , and the second electronic device 420 sends the second modulated signal to the first electronic device 410 Therefore, the phase compensation amount of the second modulated signal to be sent by the second electronic device 420 is 2* ⁇ .
  • Step 107 the second electronic device 420 sends the phase-compensated second modulated signal to the first electronic device 410 .
  • the phase deviation brought by the link to the carrier signal is obtained, and the phase deviation of the carrier signal is performed based on the phase deviation. Therefore, the influence of the phase deviation on the signal demodulation at the receiving end can be eliminated, and the communication quality can be improved.
  • FIG. 12 is a schematic structural diagram of an embodiment of the signal transmission apparatus of the present application.
  • the above-mentioned signal transmission apparatus 1200 is applied to a second electronic device.
  • the second electronic device includes a second transceiver link for sending and receiving signals.
  • the impedance of the second transceiver link is adjustable, and may include: an adjustment module 1210, a reception module 1220, a first determination module 1230, a calculation module 1240, a first compensation module 1250, and a transmission module 1260; wherein,
  • an adjustment module 1210 configured to adjust the impedance of the second transceiver link at multiple different times, so that the second transceiver link has different impedances at multiple different times;
  • the receiving module 1220 is configured to respectively receive multiple first carrier signals sent by the first electronic device when the second transceiving link has multiple different impedances, and obtain multiple first carrier signals received by the second electronic device;
  • the first determination module 1230 is configured to determine the mapping relationship between the phase deviation and the impedance based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device; wherein the phase deviation is used to characterize the transmission of the first electronic device The phase difference value between the first carrier signal and the first carrier signal received by the second electronic device;
  • a calculation module 1240 configured to obtain the current impedance of the second transceiver link, and determine the current phase deviation based on the current impedance and the mapping relationship;
  • the first compensation module 1250 is used to obtain the second carrier signal and the second modulation signal, modulate the second modulation signal on the second carrier signal, and obtain the second modulated signal; phase compensation,
  • the sending module 1260 is configured to send the second modulated signal obtained after the phase compensation to the first electronic device.
  • the above-mentioned adjustment module 1210 is further configured to periodically adjust the impedance of the second transceiving link within a preset time period.
  • the second transceiver link includes an initial impedance
  • the adjustment module 1210 is further configured to adjust the impedance of the second transceiver link in two cycles within a preset time period, wherein the three impedances Includes initial impedance and two adjustment impedances.
  • the adjustment module 1210 is further configured to adjust the impedance of the second transceiver link in three cycles within a preset time period, wherein the three impedances include three adjustment impedances.
  • the above-mentioned apparatus 1200 further includes: a second determining module 1270; wherein,
  • the second determining module 1270 is configured to receive multiple first modulated signals sent by the first electronic device at different times respectively, and obtain multiple first modulated signals received by the second electronic device, wherein the first electronic device sends
  • the plurality of first modulated signals include the first carrier signal and the first modulated signal sent by the first electronic device, and the first modulated signal received by the second electronic device includes the first carrier signal received by the second electronic device and The first modulated signal; obtain the 0-phase moment of the first carrier signal received by the second electronic device and the frame start point moment of the first modulated signal received by the second electronic device, based on the first carrier wave received by the second electronic device
  • the 0-phase moment of the signal and the frame start point moment of the first modulated signal received by the second electronic device determine the phase difference, where the phase difference is used to characterize the first carrier signal received by the second electronic device and the second electronic device. Phase difference value between the received first modulated signals.
  • the above-mentioned apparatus 1200 further includes: a clock module 1280; wherein,
  • the clock module 1280 is configured to sample the first carrier signal received by the second electronic device to obtain the 0-phase moment of the first carrier signal received by the second electronic device.
  • the above clock module 1280 is further configured to perform n-multiplier on the sampling frequency, where n is a constant, and n is determined by the precision of the phase deviation; for the first carrier signal received by the second electronic device Sampling is performed to obtain the 0-phase moment of the first carrier signal received by the second electronic device.
  • the above-mentioned apparatus 1200 further includes: a second compensation module 1290; wherein,
  • the second compensation module 1290 is configured to perform phase compensation on the second modulated signal based on the phase difference.
  • the above-mentioned first compensation module 1250 is further configured to advance the phase of the second modulated signal by twice the phase deviation.
  • the first electronic device includes a first transceiving link for transceiving signals, the first transceiving link and the second transceiving link form an equivalent link for signal transmission, and the first determining module above 1230 is further configured to determine the coefficients of the equivalent link based on the plurality of first carrier signals and the plurality of impedances received by the second electronic device, and the mapping relationship is represented by a formula including the coefficients.
  • the frequency of the first carrier signal and the second carrier signal are the same.
  • each module of the signal transmission apparatus shown in FIG. 12 above is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated.
  • these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of software calling through processing elements, and some modules can be implemented in hardware.
  • the detection module may be a separately established processing element, or may be integrated in a certain chip of the electronic device.
  • the implementation of other modules is similar.
  • all or part of these modules can be integrated together, and can also be implemented independently.
  • each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more specific integrated circuits (Application Specific Integrated Circuit; hereinafter referred to as: ASIC), or, one or more microprocessors Digital Signal Processor (hereinafter referred to as: DSP), or, one or more Field Programmable Gate Array (Field Programmable Gate Array; hereinafter referred to as: FPGA), etc.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (System-On-a-Chip; hereinafter referred to as: SOC).
  • FIG. 13 is a schematic structural diagram of the electronic device 100 .
  • the electronic device 100 may be the second electronic device 420 described above, and the electronic device 100 may be used to execute the functions/steps in the methods provided by the embodiments shown in FIG. 1 to FIG. 11 of the present application.
  • the electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, a display screen 194, and a subscriber identification module (subscriber). identification module, SIM) card interface 195, etc.
  • a processor 110 an external memory interface 120, an internal memory 121, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, a display screen 194, and a subscriber identification module (subscriber). identification module, SIM) card interface 195, etc.
  • SIM subscriber identification module
  • the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the electronic device 100 .
  • the electronic device 100 may include more or less components than shown, or combine some components, or separate some components, or arrange different components.
  • the illustrated components may be implemented in hardware, software, or a combination of software and hardware.
  • the processor 110 may include one or more processing units, for example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (neural-network processing unit, NPU), etc. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.
  • application processor application processor, AP
  • modem processor graphics processor
  • ISP image signal processor
  • controller video codec
  • digital signal processor digital signal processor
  • baseband processor baseband processor
  • neural-network processing unit neural-network processing unit
  • the controller can generate an operation control signal according to the instruction operation code and timing signal, and complete the control of fetching and executing instructions.
  • a memory may also be provided in the processor 110 for storing instructions and data.
  • the memory in processor 110 is cache memory. This memory may hold instructions or data that have just been used or recycled by the processor 110 . If the processor 110 needs to use the instruction or data again, it can be called directly from the memory. Repeated accesses are avoided and the latency of the processor 110 is reduced, thereby increasing the efficiency of the system.
  • the wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modulation and demodulation processor, the baseband processor, and the like.
  • Both antenna 1 and antenna 2 can be used to transmit and receive electromagnetic wave signals.
  • Each antenna in terminal 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization.
  • the antenna 1 can be multiplexed into the diversity antenna of the wireless local area network.
  • each communication mode can also be equipped with a separate antenna.
  • the antenna may be used in conjunction with a tuning switch.
  • the mobile communication module 150 may provide wireless communication solutions including 2G/3G/4G/5G etc. applied on the electronic device 100 .
  • the mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA) and the like.
  • the mobile communication module 150 can receive electromagnetic waves from the antenna 1, filter and amplify the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation.
  • the mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor, and then turn it into an electromagnetic wave for radiation through the antenna 1 .
  • at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110 .
  • at least part of the functional modules of the mobile communication module 150 may be provided in the same device as at least part of the modules of the processor 110 .
  • the modem processor may include a modulator and a demodulator.
  • the modulator is used to modulate the low frequency baseband signal to be sent into a medium and high frequency signal.
  • the demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator transmits the demodulated low-frequency baseband signal to the baseband processor for processing.
  • the low frequency baseband signal is processed by the baseband processor and passed to the application processor.
  • the modem processor may be a stand-alone device.
  • the modulation and demodulation processor may be independent of the processor 110, and may be provided in the same device as the mobile communication module 150 or other functional modules.
  • the wireless communication module 160 can provide applications on the electronic device 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), global navigation satellites Wireless communication solutions such as global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), and infrared technology (IR).
  • WLAN wireless local area networks
  • BT Bluetooth
  • GNSS global navigation satellite system
  • FM frequency modulation
  • NFC near field communication
  • IR infrared technology
  • the wireless communication module 160 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 160 receives electromagnetic waves via the antenna 2 , frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110 .
  • the wireless communication module 160 can also receive the signal to be sent from the processor 110, perform frequency modulation on it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.
  • the antenna 1 of the electronic device 100 is coupled with the mobile communication module 150, and the antenna 2 is coupled with the wireless communication module 160, so that the electronic device 100 can communicate with the network and other devices through wireless communication technology.
  • the wireless communication technologies may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code Division Multiple Access (WCDMA), Time Division Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE), BT, GNSS, WLAN, NFC, FM, and/or IR technology, etc.
  • the GNSS may include a global positioning system (global positioning system, GPS), a global navigation satellite system (GLONASS), a Beidou navigation satellite system (BDS), a quasi-zenith satellite system (quasi -zenith satellite system, QZSS) and/or satellite based augmentation systems (SBAS).
  • GPS global positioning system
  • GLONASS global navigation satellite system
  • BDS Beidou navigation satellite system
  • QZSS quasi-zenith satellite system
  • SBAS satellite based augmentation systems
  • the electronic device 100 implements a display function through a GPU, a display screen 194, an application processor, and the like.
  • the GPU is a microprocessor for image processing, and is connected to the display screen 194 and the application processor.
  • the GPU is used to perform mathematical and geometric calculations for graphics rendering.
  • Processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.
  • Display screen 194 is used to display images, videos, and the like.
  • Display screen 194 includes a display panel.
  • the display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light).
  • LED diode AMOLED
  • flexible light-emitting diode flexible light-emitting diode (flex light-emitting diode, FLED), Miniled, MicroLed, Micro-oLed, quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) and so on.
  • the electronic device 100 may include one or N display screens 194 , where N is a positive integer greater than one.
  • Internal memory 121 may be used to store computer executable program code, which includes instructions.
  • the internal memory 121 may include a storage program area and a storage data area.
  • the storage program area can store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), and the like.
  • the storage data area may store data (such as audio data, phone book, etc.) created during the use of the electronic device 100 and the like.
  • the internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), and the like.
  • the processor 110 executes various functional applications and data processing of the electronic device 100 by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.
  • the SIM card interface 195 is used for connecting a SIM card.
  • the SIM card can be contacted and separated from the electronic device 100 by inserting into the SIM card interface 195 or pulling out from the SIM card interface 195 .
  • the electronic device 100 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1.
  • the SIM card interface 195 can support Nano SIM card, Micro SIM card, SIM card and so on. Multiple cards can be inserted into the same SIM card interface 195 at the same time. The types of the plurality of cards may be the same or different.
  • the SIM card interface 195 can also be compatible with different types of SIM cards.
  • the SIM card interface 195 is also compatible with external memory cards.
  • the electronic device 100 interacts with the network through the SIM card to implement functions such as calls and data communications.
  • the electronic device 100 employs an eSIM, ie: an embedded SIM card.
  • the eSIM card can be embedded in the electronic device 100 and cannot be separated from the electronic device 100 .
  • the involved processors may include, for example, a CPU, a DSP, a microcontroller or a digital signal processor, and may also include a GPU, an embedded neural-network process unit (Neural-network Process Units; hereinafter referred to as: NPU) and Image signal processor (Image Signal Processing; hereinafter referred to as: ISP), the processor may also include necessary hardware accelerators or logic processing hardware circuits, such as ASIC, or one or more integrated circuits for controlling the execution of the program of the technical solution of the present application circuit, etc. Furthermore, the processor may have the function of operating one or more software programs, which may be stored in a storage medium.
  • Embodiments of the present application provide a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer instructions cause the computer to execute The signal transmission method provided by the embodiments shown in FIG. 1 to FIG. 11 of this specification.
  • the above-described non-transitory computer-readable storage media may employ any combination of one or more computer-readable media.
  • the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium.
  • the computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above.
  • a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a propagated data signal in baseband or as part of a carrier wave with computer-readable program code embodied thereon. Such propagated data signals may take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device .
  • Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
  • Computer program code for carrying out the operations of this specification may be written in one or more programming languages, including object-oriented programming languages—such as Java, Smalltalk, C++, but also conventional Procedural programming language - such as the "C" language or similar programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server.
  • the remote computer can be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or Wide Area Network (WAN), or it can Connect to an external computer (eg via the Internet using an Internet Service Provider).
  • LAN Local Area Network
  • WAN Wide Area Network
  • Internet Service Provider e.g via the Internet using an Internet Service Provider
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined. Either it can be integrated into another system, or some features can be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • each functional unit in each embodiment of this specification may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium.
  • the above-mentioned software functional unit is stored in a storage medium, and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (Processor) to execute the methods described in the various embodiments of this specification. some steps.
  • the aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (Read-Only Memory; hereinafter referred to as: ROM), Random Access Memory (Random Access Memory; hereinafter referred to as: RAM), magnetic disk or optical disk and other various A medium on which program code can be stored.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Les modes de réalisation de la présente demande se rapportent au domaine technique des communications, et concernent un procédé de transmission de signal, un dispositif électronique et un support de stockage. Le procédé consiste : à régler une impédance d'une seconde liaison d'émission-réception à de multiples moments différents ; quand la seconde liaison d'émission-réception présente de multiples impédances différentes, à recevoir de multiples premiers signaux de porteuse envoyés par un premier dispositif électronique ; sur la base des multiples premiers signaux de porteuse reçus par un second dispositif électronique et des multiples impédances, à déterminer une relation de mappage entre des déviations de phase et des impédances ; à déterminer la déviation de phase actuelle sur la base de l'impédance actuelle de la seconde liaison d'émission-réception et de la relation de mappage ; et à effectuer une compensation de phase sur un second signal modulé sur la base de la déviation de phase actuelle, et à envoyer au premier dispositif électronique le second signal modulé obtenu après la compensation de phase. Selon le procédé fourni par les modes de réalisation de la présente demande, la phase d'un signal envoyé est compensée au niveau d'un terminal CCP, de telle sorte qu'une déviation de phase entre un signal de lecteur de cartes et un signal de terminal CCP peut être éliminée, d'où une amélioration de l'efficience de démodulation de signal d'un lecteur de cartes.
PCT/CN2021/076036 2021-02-08 2021-02-08 Procédé de transmission de signal, dispositif électronique et support de stockage Ceased WO2022165842A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/076036 WO2022165842A1 (fr) 2021-02-08 2021-02-08 Procédé de transmission de signal, dispositif électronique et support de stockage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/076036 WO2022165842A1 (fr) 2021-02-08 2021-02-08 Procédé de transmission de signal, dispositif électronique et support de stockage

Publications (1)

Publication Number Publication Date
WO2022165842A1 true WO2022165842A1 (fr) 2022-08-11

Family

ID=82740708

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/076036 Ceased WO2022165842A1 (fr) 2021-02-08 2021-02-08 Procédé de transmission de signal, dispositif électronique et support de stockage

Country Status (1)

Country Link
WO (1) WO2022165842A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116545455A (zh) * 2023-07-04 2023-08-04 北京紫光青藤微系统有限公司 用于调节发射机天线能量耗散的方法及装置、发射机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101978383A (zh) * 2008-03-20 2011-02-16 Nxp股份有限公司 用于无接触通信的收发电路和包括这种收发电路的nfc设备或rfid读/写设备
US20180183638A1 (en) * 2015-06-02 2018-06-28 Logomotion, S.R.O. Method of processing of signal transmitted from the analog nfc driver and system for realization of said method
CN112187333A (zh) * 2019-07-05 2021-01-05 华为技术有限公司 信号传输方法及其装置
CN112202508A (zh) * 2019-07-08 2021-01-08 中兴通讯股份有限公司 一种无线信号性能调整装置及方法和无线通信终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101978383A (zh) * 2008-03-20 2011-02-16 Nxp股份有限公司 用于无接触通信的收发电路和包括这种收发电路的nfc设备或rfid读/写设备
US20180183638A1 (en) * 2015-06-02 2018-06-28 Logomotion, S.R.O. Method of processing of signal transmitted from the analog nfc driver and system for realization of said method
CN112187333A (zh) * 2019-07-05 2021-01-05 华为技术有限公司 信号传输方法及其装置
CN112202508A (zh) * 2019-07-08 2021-01-08 中兴通讯股份有限公司 一种无线信号性能调整装置及方法和无线通信终端

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116545455A (zh) * 2023-07-04 2023-08-04 北京紫光青藤微系统有限公司 用于调节发射机天线能量耗散的方法及装置、发射机
CN116545455B (zh) * 2023-07-04 2023-11-03 北京紫光青藤微系统有限公司 用于调节发射机天线能量耗散的方法及装置、发射机

Similar Documents

Publication Publication Date Title
CN112953590B (zh) 信号传输方法、电子设备及存储介质
JP5969107B2 (ja) モバイルデバイスの位置推定を行うデバイス、システム及び方法
WO2021254078A1 (fr) Procédé de transmission d'informations, appareil et dispositif terminal.
US10568039B2 (en) Electronic device supporting beamforming and method of operating electronic device
US20220159555A1 (en) Apparatus, system, and method of communicating over a millimeterwave (mmwave) channel based on information communicated over a sub 10 gigahertz (ghz) (sub-10ghz) channel
CN114430281B (zh) 阻抗匹配方法、装置、电子设备及可读存储介质
US20170026791A1 (en) Apparatus, system and method of bluetooth communication
WO2024093527A1 (fr) Multiplexeur, module radiofréquence et dispositif électronique
WO2020239011A1 (fr) Procédé de rapport de combinaisons de ca et dispositif électronique
WO2022165842A1 (fr) Procédé de transmission de signal, dispositif électronique et support de stockage
WO2023138282A1 (fr) Procédé de commande de puissance d'antennes et dispositif électronique
US11050446B2 (en) Device and method for improving radiation performance of antenna using impedance tuning
US20250016702A1 (en) Ultra-wideband signal synchronization method and communication apparatus
CN114389727A (zh) 检测生命体接近终端设备的方法、终端设备及芯片
CN117459832B (zh) 一种摄像头的控制方法、电子设备及存储介质
US20240214145A1 (en) Methods for Transmitting and Receiving Pilot and Device
US20250081009A1 (en) Communication method and communication apparatus
CN107528683A (zh) 载波聚合中载波参数的设置方法、装置及移动终端
CN112969195A (zh) 信号质量检测方法及相关设备
CN120110854B (zh) 频偏带限数字预失真方法、系统、电子设备、芯片系统、存储介质和程序产品
US20240357406A1 (en) Apparatus, system, and method of a sensing measurement session
US20240280685A1 (en) Ranging method and apparatus
TWI404013B (zh) 電子裝置與調整其畫素時脈頻率的方法
KR101192310B1 (ko) 위성통신 시스템의 단말국에서의 주파수 오차 보상방법
CN117479202A (zh) 一种通信方法、通信装置和通信系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21923852

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21923852

Country of ref document: EP

Kind code of ref document: A1