[go: up one dir, main page]

WO2018119943A1 - Procédé et dispositif d'identification de canal - Google Patents

Procédé et dispositif d'identification de canal Download PDF

Info

Publication number
WO2018119943A1
WO2018119943A1 PCT/CN2016/113246 CN2016113246W WO2018119943A1 WO 2018119943 A1 WO2018119943 A1 WO 2018119943A1 CN 2016113246 W CN2016113246 W CN 2016113246W WO 2018119943 A1 WO2018119943 A1 WO 2018119943A1
Authority
WO
WIPO (PCT)
Prior art keywords
matrix
spreading code
new
obtaining
signal
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/CN2016/113246
Other languages
English (en)
Chinese (zh)
Inventor
李明
遆光宇
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 Tinno Wireless Technology Co Ltd
Original Assignee
Shenzhen Tinno Wireless 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 Tinno Wireless Technology Co Ltd filed Critical Shenzhen Tinno Wireless Technology Co Ltd
Priority to PCT/CN2016/113246 priority Critical patent/WO2018119943A1/fr
Publication of WO2018119943A1 publication Critical patent/WO2018119943A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a channel identification method and apparatus.
  • Code Division Multiple Access is a wireless access technology widely used in the prior art. It is easy to implement due to its anti-interference, anti-fading, large capacity, soft handover and anti-spectrum analysis. In recent years, code division multiple access has been increasingly favored. In code division multiple access, the allocation of communication resources is realized by the allocation of spreading codes, and each user occupies a separate spreading code for establishing communication with the base station, in the code division multiple access downlink, The user's spreading code is orthogonal or nearly orthogonal, so that when receiving at the receiving end, the receiving end can effectively recover the transmitted signal as long as it knows the unique spreading code assigned.
  • the unoccupied channels can be further utilized, thereby improving the utilization of spectrum resources in the communication system, thereby effectively identifying the occupied channels in the communication system.
  • the channel is very necessary.
  • the embodiment of the present application provides a channel identification method and apparatus, which can identify a channel already occupied in a communication system without performing additional communication.
  • the embodiment of the present application provides a channel identification method, which is applied to a communication system including a first system and a second system, where the first system includes a first receiving end and a first transmitting end, and the second system package The second receiving end and the second sending end are included; the method is performed on the second sending end, and includes:
  • any possible implementation manner further provide an implementation manner, according to the joint matrix, obtaining a target matrix, including:
  • a target joint matrix is obtained based on a signal received from the first system band and the target transmit signal matrix.
  • B is the new transmit signal matrix
  • V is the joint matrix
  • Y is received on the first system band.
  • the signal, H indicates conjugate transposition.
  • the aspect as described above, and any possible implementation manner, further provide an implementation manner, according to the target matrix, obtaining a spreading code used by the first system, including:
  • the latest spreading code is the same as the previous spreading code, it is determined that the latest spreading code is a spreading code used by the first system.
  • s i is the ith spreading code in the new spreading code
  • L is the spreading code length
  • E is the channel parameter matrix
  • v i is the target matrix vector in the target matrix
  • H is the conjugate transpose.
  • the embodiment of the present application provides a channel identification apparatus, which is applied to a communication system including a first system and a second system, where the first system includes a first receiving end and a first transmitting end, and the second system includes a second system. a receiving end and a second sending end; the device is located on the second sending end, and includes:
  • a receiving unit configured to receive a signal on a first system frequency band
  • a generating unit configured to generate a joint matrix including a channel parameter and a spreading code according to the signal received from the first system band and the transmission signal matrix;
  • a first acquiring unit configured to obtain a target matrix according to the joint matrix
  • a second acquiring unit configured to obtain, according to the target matrix, a spreading code used by the first system.
  • the above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the first acquiring unit is configured to:
  • a target joint matrix is obtained based on a signal received from the first system band and the target transmit signal matrix.
  • the above-mentioned aspect and any possible implementation manner further provide an implementation manner, where the first acquiring unit is specifically configured to:
  • a new transmit signal matrix is obtained based on the signal received from the first system band and the joint matrix, and using the following formula:
  • B is a new transmission signal matrix
  • V is a joint matrix
  • Y is a signal received on the first system band
  • H is a conjugate transpose
  • the latest spreading code is the same as the previous spreading code, it is determined that the latest spreading code is a spreading code used by the first system.
  • s i is the ith spreading code in the new spreading code
  • L is the spreading code length
  • E is the channel parameter matrix
  • v i is the target matrix vector in the target matrix
  • H is the conjugate transpose.
  • the channel identification method provided by the embodiment of the present application is applied to a communication system including a first system and a second system, where the first system includes a first receiving end and a first transmitting end, and the second system includes a second receiving end and a second sending
  • the method is performed on the second transmitting end, specifically, by receiving a signal on the first system frequency band, and then generating a channel parameter and a spread spectrum according to the received signal matrix and the transmitted signal matrix from the first system frequency band
  • the joint matrix of the code and thus, obtains the target matrix according to the joint matrix, and further, according to the target matrix, obtains a spreading code used by the first system, and the spreading code is used to identify the channel occupied by the first system.
  • the signals on the first system frequency band are all communicated through the occupied channels in the communication system, and each channel corresponds to an independent spreading code. Therefore, the present application implements In an example, the second sending end in the second system does not need to perform additional communication with the first receiving end or the first sending end in the first system regarding the channel occupancy condition, and the second sending end only needs to receive the original
  • the signal on the first system frequency band is analyzed, and the spreading code used by the first system can be determined, so that the channel occupancy of the communication system can be dynamically perceived, and thus, conditions for improving the frequency band utilization of the communication system can be created. . Therefore, the technical solution provided by the embodiment of the present application can identify a channel that has been occupied in the communication system without performing additional communication.
  • FIG. 1 is a schematic diagram of a communication system in an embodiment of the present application.
  • Embodiment 1 of a channel identification method provided by an embodiment of the present application
  • Embodiment 3 is a schematic flowchart of Embodiment 2 of a channel identification method provided by an embodiment of the present application;
  • FIG. 4 is a functional block diagram of a channel identification apparatus according to an embodiment of the present application.
  • first, second, third, etc. may be used to describe a system or the like in the embodiments of the present application, these systems and the like should not be limited to these terms. These terms are only used to distinguish systems from each other.
  • the first system may also be referred to as a second system without departing from the scope of the embodiments of the present application.
  • the second system may also be referred to as a first system.
  • the word “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting.”
  • the phrase “if determined” or “if detected (conditions or events stated)” can be interpreted as “when determined” or “ringing” It should be determined “or” when detecting (conditions or events stated) or “in response to testing (conditions or events stated)”.
  • the embodiment of the present application provides a channel identification method.
  • the method is applied to a communication system including a first system and a second system, wherein the first system includes a first receiving end and a first transmitting end, and the second system includes a second receiving end and a second transmitting end.
  • FIG. 1 is a schematic diagram of a communication system in an embodiment of the present application.
  • the system includes a first system and a second system, where the first system includes one first transmitting end and K first receiving ends, and the second system includes one second transmitting end and one second system. The second receiving end of the communication system to be accessed.
  • the signal sent by the first transmitting end can be received by the first receiving end and the second receiving end in the communication system, which is indicated by a solid line in FIG. 1; the signal sent by the second transmitting end is shown in FIG. It can be received by the first receiving end and the second receiving end in the communication system, and is indicated by a broken line in FIG.
  • the K first receiving ends have established communication with the first transmitting end, that is, the first transmitting end allocates K devices to the K first receiving ends.
  • the spreading code is not limited in this embodiment.
  • the number of Ks is at least one.
  • one second receiving end is a receiving end of a channel to be accessed, and at this time, the second receiving ends are not connected to the communication system; wherein the number of Is may be one or more One.
  • the first system may be the primary system and the second system may be the secondary system.
  • the communication system including the first system and the second system may be a code division multiple access communication system.
  • the channel identification method provided by the embodiment of the present application determines the channel occupied by the first system by performing blind analysis on the received signal in the first system frequency band.
  • FIG. 2 is a schematic flowchart of Embodiment 1 of a channel identification method according to an embodiment of the present application. As shown in FIG. 2 , the method includes the following steps:
  • S201 Receive a signal on a first system frequency band.
  • the spreading code is used to identify a channel occupied by the first system.
  • execution body of S201-S204 may be a channel identification device, and the device may be located at a second transmitting end in the communication system.
  • the signals on the first system frequency band are all communicated through the occupied channels in the communication system, and each channel corresponds to an independent spreading code. Therefore, the present application implements In an example, the second sending end in the second system does not need to perform additional communication with the first receiving end or the first sending end in the first system regarding the channel occupancy condition, and the second sending end only needs to receive the original
  • the signal on the first system frequency band is analyzed, and the spreading code used by the first system can be determined, so that the channel occupancy of the communication system can be dynamically perceived, and thus, conditions for improving the frequency band utilization of the communication system can be created. . Therefore, the technical solution provided by the embodiment of the present application can identify a channel that has been occupied in the communication system without performing additional communication.
  • the method in the present application specifically describes the method for obtaining a target matrix according to the joint matrix in S203.
  • the received signal on the first system frequency band can be expressed as:
  • E is a multipath channel matrix, where E can be expressed as The following form:
  • a plurality of signals received from the first system band may constitute a signal matrix, and thus, the signal matrix received from the first system band may be expressed as:
  • Y is a received signal matrix composed of a plurality of signals received from the first system frequency band
  • B is a transmission signal matrix composed of a plurality of b i (m)
  • N is a Gaussian white noise
  • V is a generated joint matrix.
  • the generated joint matrix V includes channel parameters and spreading codes.
  • the ith column vector in the joint matrix V can be expressed as:
  • the least squares iterative method can be used to obtain the target matrix according to the joint matrix described above.
  • the method for obtaining the target matrix may include the following steps:
  • a target joint matrix is obtained based on the signal received from the first system band and the target transmission signal matrix.
  • the least-squares iteration principle can be utilized to obtain a new transmission signal matrix B by using the received signal matrix Y and the joint matrix V.
  • B sgn ⁇ Re[(V H V) -1 V H Y] ⁇ .
  • V is a joint matrix
  • Y is a signal matrix received on the first system band
  • H is a conjugate transpose.
  • the new joint matrix V is obtained by using the least squares iteration principle, using the received signal matrix Y and the new transmission signal matrix B.
  • the convergence results include the latest joint matrix V and the latest transmit signal matrix B.
  • the obtained convergence result is not necessarily globally optimal.
  • the correlation determination is introduced to obtain a stable signal vector satisfying the specified correlation condition in the joint matrix V. .
  • the transmission signal matrix B is reliable or not is determined.
  • the step of acquiring a stable signal vector in the joint matrix V is performed.
  • the initialization transmission signal matrix B is re-executed, and finally the convergence result is obtained until a stable transmission signal matrix B is obtained.
  • any two of the transmission signal matrices B can be obtained.
  • the correlation of the column signal vectors Therefore, when the correlation of any two columns of signal vectors in the transmission signal matrix B is greater than or equal to a preset first correlation threshold, it is considered that the obtained transmission signal matrix B is unreliable; or, when transmitting the signal matrix B When the correlation of any two columns of signal vectors is less than the preset first correlation threshold, the obtained transmission signal matrix B is considered to be reliable.
  • the correlation of any two columns of signal vectors in the transmit signal matrix B can be obtained by using the following formula:
  • the first correlation threshold may be preset to
  • a reliable set of signal vectors is obtained in the joint matrix V.
  • the correlation between any one of the signal vectors of the joint matrix V and the other column signal vectors can be obtained, and then these signal vectors are respectively compared with a preset second correlation threshold, when there is a column of signal vectors and other signal vectors.
  • This signal vector is considered to be reliable when the correlation is greater than or equal to the preset second correlation threshold.
  • the correlation between the signal vector of any one of the transmission joint matrices V and the other column signal vectors can be obtained by using the following formula:
  • I the signal vector of the ith column in the joint matrix V Correlation with other signal vectors
  • F is the number of times the above steps are performed until convergence.
  • the second correlation threshold may be preset as an average of the correlations of all signal vectors in the joint matrix V.
  • the second correlation threshold may be preset as: When the i-th column signal vector Correlation with other signal vectors Greater than or equal to the average of all signal vectors I think the ith column signal vector It is reliable.
  • the signals on the first system frequency band are all communicated through the occupied channels in the communication system, and each channel corresponds to an independent spreading code. Therefore, the present application implements In an example, the second sending end in the second system does not need to perform additional communication with the first receiving end or the first sending end in the first system regarding the channel occupancy condition, and the second sending end only needs to receive the original
  • the signal on the first system frequency band is analyzed, and the spreading code used by the first system can be determined, so that the channel occupancy of the communication system can be dynamically perceived, and thus, conditions for improving the frequency band utilization of the communication system can be created. . Therefore, the technical solution provided by the embodiment of the present application can identify a channel that has been occupied in the communication system without performing additional communication.
  • the method in the present application specifically describes the method for obtaining the spreading code used by the first system according to the target matrix in S204.
  • the obtained i-th column signal vector in the target matrix V can be expressed as:
  • the target matrix includes a spreading code and a signal parameter.
  • the spreading code used by the first system can be obtained in a similar manner to the second embodiment.
  • the step of obtaining the spreading code used by the first system may include:
  • the latest spreading code is the same as the previous spreading code, it is determined that the latest spreading code is the spreading code used by the first system.
  • s i is a spreading code corresponding to the ith first receiving end.
  • s i can be expressed as a column vector
  • S can be expressed as a matrix of spreading codes including a plurality of spreading code column vectors.
  • any channel parameter vector in the new channel parameter matrix E can be expressed as :
  • e is any channel parameter vector in the new channel parameter matrix E
  • K is the number of first receiving ends in the first system
  • v i is the ith signal vector in the target matrix V
  • s i is the spreading code S
  • the spreading code corresponding to the i th first receiving end, at this time, s i can be expressed as:
  • L indicates that the number of spreading codes corresponding to the i-th first receiving end obtained by the above-mentioned L steps is L.
  • a new spreading code S is obtained according to the obtained target matrix V and the new channel parameter matrix E.
  • the i-th first receiving end of the new spreading code S corresponds to The spreading code s i can be expressed as:
  • s i is the spreading code corresponding to the i th first receiving end in the new spreading code
  • L is the spreading code length
  • E is the channel parameter matrix
  • v i is the target matrix vector in the target matrix
  • H is Conjugate transposition.
  • the above steps are repeated, and so on, until the convergence stops the above steps, that is, until the obtained latest spreading code matrix is the same as the last obtained spreading code matrix, it is considered to be converged, and at this time, the above is not repeated.
  • the obtained convergence result includes the latest spreading code matrix S and the channel parameter matrix E.
  • the spreading code matrix S is obtained, and all the spreading code information used in the first system is obtained, and since the obtained joint matrix V is reliable, the spreading code matrix obtained by the least squares iterative principle is obtained. S is also reliable.
  • the signals on the first system frequency band are all communicated through the occupied channels in the communication system, and each channel corresponds to an independent spreading code. Therefore, the present application implements In an example, the second sending end in the second system does not need to perform additional communication with the first receiving end or the first sending end in the first system regarding the channel occupancy condition, and the second sending end only needs to receive the original
  • the signal on the first system frequency band is analyzed, and the spreading code used by the first system can be determined, so that the channel occupancy of the communication system can be dynamically perceived, and thus, conditions for improving the frequency band utilization of the communication system can be created. . Therefore, the technical solution provided by the embodiment of the present application can identify a channel that has been occupied in the communication system without performing additional communication.
  • FIG. 3 is a schematic flowchart of Embodiment 2 of acquiring a spreading code used in the first system in the embodiment of the present application. As shown in FIG. 3, the method includes the following steps:
  • S301 Receive a signal on a first system frequency band.
  • S311 Obtain a new channel parameter matrix by using a least squares iteration method according to the obtained target joint matrix and the spreading code matrix.
  • the signals on the first system frequency band are all communicated through the occupied channels in the communication system, and each channel corresponds to an independent spreading code. Therefore, the present application implements In an example, the second sending end in the second system does not need to perform additional communication with the first receiving end or the first sending end in the first system regarding the channel occupancy condition, and the second sending end only needs to receive the original
  • the signal on the first system frequency band is analyzed, and the spreading code used by the first system can be determined, so that the channel occupancy of the communication system can be dynamically perceived, and thus, conditions for improving the frequency band utilization of the communication system can be created. . Therefore, the technical solution provided by the embodiment of the present application can Identify the channels already occupied in the communication system on the premise of additional communication.
  • the embodiment of the present application further provides an apparatus embodiment for implementing the steps and methods in the foregoing method embodiments.
  • the embodiment of the present application provides a channel identification apparatus, which is applied to a communication system including a first system and a second system, where the first system includes a first receiving end and a first transmitting end, and the second system includes a communication system to be accessed. a second receiving end and a second transmitting end; the device is located on the second transmitting end.
  • FIG. 4 is a functional block diagram of a channel identification apparatus according to an embodiment of the present application.
  • the device comprises:
  • a receiving unit 41 configured to receive a signal on a first system frequency band
  • the generating module 42 is configured to generate a joint matrix including a channel parameter and a spreading code according to the signal received from the first system band and the transmission signal matrix;
  • the first obtaining unit 43 is configured to obtain a target matrix according to the joint matrix
  • the second obtaining unit 44 is configured to obtain a spreading code used by the first system according to the target matrix.
  • the first obtaining unit 43 is configured to:
  • the first obtaining unit 43 is specifically configured to:
  • B is a new transmission signal matrix
  • V is a joint matrix
  • Y is a signal received on the first system band
  • H is a conjugate transpose
  • the second obtaining unit 44 is configured to:
  • the latest spreading code is the same as the previous spreading code, it is determined that the latest spreading code is the spreading code used by the first system.
  • the second obtaining unit 44 is specifically configured to:
  • s i is the ith spreading code in the new spreading code
  • L is the spreading code length
  • E is the channel parameter matrix
  • v i is the target matrix vector in the target matrix
  • H is the conjugate transpose.
  • the signals on the first system frequency band are all communicated through the occupied channels in the communication system, and each channel corresponds to an independent spreading code. Therefore, the present application implements In an example, the second sending end in the second system does not need to perform additional communication with the first receiving end or the first sending end in the first system regarding the channel occupation situation, and the second transmitting end only needs to be the original
  • the signal received in the first system frequency band is analyzed, and the spreading code used by the first system can be determined, so that the channel occupancy of the communication system can be dynamically perceived, and further, the frequency band utilization of the communication system can be improved. Rate creates conditions. Therefore, the technical solution provided by the embodiment of the present application can identify a channel that has been occupied in the communication system without performing additional communication.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present application. Part of the steps. And the foregoing
  • the storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un mode de réalisation de la présente invention concerne un procédé et un dispositif d'identification de canal. Selon un aspect, le mode de réalisation de la présente invention consiste à recevoir un signal sur une première bande de fréquences de système ; produire une matrice conjointe comprenant un paramètre de canal et un code d'étalement en fonction du signal reçu depuis la première bande de fréquences de système et d'une matrice de signal de transmission ; obtenir une matrice cible en fonction de la matrice conjointe ; et, en fonction de la matrice cible, obtenir un code d'étalement utilisé par le premier système, le code d'étalement étant utilisé pour identifier le canal occupé par le premier système. Par conséquent, la solution technique fournie par les modes de réalisation de la présente invention peut identifier le canal occupé dans le système de communication sans effectuer de communication supplémentaire.
PCT/CN2016/113246 2016-12-29 2016-12-29 Procédé et dispositif d'identification de canal Ceased WO2018119943A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/113246 WO2018119943A1 (fr) 2016-12-29 2016-12-29 Procédé et dispositif d'identification de canal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/113246 WO2018119943A1 (fr) 2016-12-29 2016-12-29 Procédé et dispositif d'identification de canal

Publications (1)

Publication Number Publication Date
WO2018119943A1 true WO2018119943A1 (fr) 2018-07-05

Family

ID=62706587

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/113246 Ceased WO2018119943A1 (fr) 2016-12-29 2016-12-29 Procédé et dispositif d'identification de canal

Country Status (1)

Country Link
WO (1) WO2018119943A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102301771A (zh) * 2009-01-28 2011-12-28 诺基亚公司 认知无线电
US20120288021A1 (en) * 2011-05-09 2012-11-15 Electronics And Telecommunications Research Institute Secondary transmitter included in cognitive radio communication system and communication method of the secondary transmitter
US20120289266A1 (en) * 2011-05-12 2012-11-15 Electronics And Telecommunications Research Institute Cognitive radio base station and communication method thereof in multi-user multiple-input multiple output cognitive radio network system
CN103973383A (zh) * 2014-05-19 2014-08-06 西安电子科技大学 基于Cholesky分解与特征值的协作频谱检测方法
CN104038944A (zh) * 2014-06-25 2014-09-10 哈尔滨工业大学 一种基于随机矩阵的认知无线电频谱感知方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102301771A (zh) * 2009-01-28 2011-12-28 诺基亚公司 认知无线电
US20120288021A1 (en) * 2011-05-09 2012-11-15 Electronics And Telecommunications Research Institute Secondary transmitter included in cognitive radio communication system and communication method of the secondary transmitter
US20120289266A1 (en) * 2011-05-12 2012-11-15 Electronics And Telecommunications Research Institute Cognitive radio base station and communication method thereof in multi-user multiple-input multiple output cognitive radio network system
CN103973383A (zh) * 2014-05-19 2014-08-06 西安电子科技大学 基于Cholesky分解与特征值的协作频谱检测方法
CN104038944A (zh) * 2014-06-25 2014-09-10 哈尔滨工业大学 一种基于随机矩阵的认知无线电频谱感知方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LIU XIAOMIN: "Cyclostationary Feature Detection based on compressed sensing Research in Cognitive Radio", MASTER'S DISSERTATION OF BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS, 30 April 2015 (2015-04-30) *

Similar Documents

Publication Publication Date Title
JP6224238B2 (ja) メッセージ処理方法、ｍｍｅ選択方法、および装置
CN105634707A (zh) 一种信息传输的方法、基站及终端
WO2017097091A1 (fr) Procédé, appareil, et système de transmission de données basés sur un mode d'accès multiple non orthogonal
CN115021915B (zh) 基于智能反射表面的密钥生成方法、装置、介质及设备
CN111246508B (zh) 干扰源识别方法、相关设备及计算机存储介质
WO2017049512A1 (fr) Station de base, terminal d'utilisateur, et procédé de transmission de données
WO2016082110A1 (fr) Procédé et appareil de génération d'un signal de fréquence pilote
CN115811451B (zh) 参考信号序列生成方法、装置、设备及介质
US10334424B2 (en) Discovery resource time-frequency hopping method and terminal
WO2015180017A1 (fr) Procédé de transmission de signal dans un service de proximité de dispositif à dispositif, station de base et équipement utilisateur
WO2018119943A1 (fr) Procédé et dispositif d'identification de canal
CN109962763B (zh) 一种多用户数据的传输方法及装置、设备
WO2016172849A1 (fr) Procédé, appareil et système d'estimation de canal
TW201840143A (zh) 使用者分群方法及使用此方法的基地台
WO2018119942A1 (fr) Procédé et appareil d'accès à un canal
WO2018059281A1 (fr) Procédé, dispositif, et système d'accès aléatoire
WO2018119939A1 (fr) Procédé et dispositif d'accès à un canal
CN109451574A (zh) 一种数据传输的方法、装置、终端和系统
WO2018119941A1 (fr) Procédé et appareil d'accès à un canal
CN115087009B (zh) 灵活帧结构仿真系统的下行信号检测方法及装置
KR102458868B1 (ko) 딥 러닝 기반 연속 간섭 제거 최적화 장치 및 방법
CN105450264A (zh) 数据传输方法和装置
KR102796041B1 (ko) D2D(Device to Device) 네트워크에서 분산 기회적 스케쥴링 방법 및 장치
WO2018119940A1 (fr) Procédé et dispositif d'accès à un canal
US20060120274A1 (en) System and method for enhancing capacity for a wireless communication system

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: 16925644

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: 16925644

Country of ref document: EP

Kind code of ref document: A1