CN116865801A - A THP-based precoding matrix generation method and related equipment - Google Patents
A THP-based precoding matrix generation method and related equipment Download PDFInfo
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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Abstract
The application provides a THP-based precoding matrix generation method and related equipment, which can generate a user state change signal when detecting that a user enters or leaves a wireless communication area covered by a base station signal, acquire a THP precoding matrix between last preset time intervals, and finally generate a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval. By the method, the THP precoding matrix at the current moment can be generated based on the user state change signal and the THP precoding matrix before the last preset time interval, and the THP precoding matrix before the last preset time interval is subjected to multiplexing update by utilizing the correlation of the front channel and the rear channel to obtain the THP precoding matrix at the current moment, so that the generation complexity of the THP precoding matrix is effectively reduced, and the performance of a wireless communication system is improved.
Description
Technical Field
The application relates to the technical field of wireless communication, in particular to a precoding matrix generation method based on THP and related equipment.
Background
With the rapid development of wireless communication technology, massive MIMO (Multiple Input Multiple Output ) technology has become a key technology for wireless communication systems. The base station adopts a large number of antennas for signal transmission with the user terminal, plays an important role in improving the throughput of a wireless communication system, expanding the signal coverage range and the like, and in MIMO, THP (Tomlinson-Harashima Precoding, shang Pulin sen-original island precoding) technology is mostly adopted to improve the reliability and stability of data transmission in the wireless communication system.
THP is a digital signal processing technology, which is used for data transmission in a multi-antenna communication system, and performs matrix transformation and precoding processing on data at a transmitting end to generate a precoding matrix, so that a receiving end can reconstruct a data stream better, thereby improving capacity and performance of the wireless communication system. THP can significantly improve data throughput and transmission reliability and quality of data in a wireless communication system. However, in the existing process of generating the precoding matrix based on the THP technology, there is often a problem that the complexity of the matrix generation process is high, and the excessive complexity of matrix generation may cause a problem that the resources required for generating the matrix are increased, thereby causing the energy efficiency of the wireless communication system to be reduced.
Therefore, how to solve the problem of the prior art that the complexity of matrix generation is high when generating the precoding matrix based on THP is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
Based on the problems, in order to solve the problem that the complexity of matrix generation is higher when a precoding matrix is generated based on THP in the prior art, the application provides a method for generating the precoding matrix based on THP and related equipment.
The embodiment of the application discloses the following technical scheme:
in a first aspect, the present application discloses a method for generating a precoding matrix based on THP, which is applied to a wireless communication system, and the method includes:
generating a user state change signal when the user is detected to enter or leave the wireless communication area; the wireless communication area is an area formed based on signal coverage by a base station in the wireless communication system;
acquiring a THP precoding matrix before a last preset time interval; the THP precoding matrix is a precoding matrix generated based on the THP technology;
and generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval.
Optionally, the generating the THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval specifically includes:
determining the change state of the user according to the user state change signal; the user's changing state includes: the user leaves the wireless communication area or the user joins the wireless communication area;
when the change state of the user is that the user joins the wireless communication area, generating a channel matrix corresponding to the change state of the user;
and generating the THP precoding matrix at the current moment based on the channel matrix and the THP precoding matrix before the last preset time interval.
Optionally, after determining the change state of the user according to the user state change signal, the method further includes:
and when the user change state of the base station is that the user leaves the area, generating the THP precoding matrix at the current moment according to the THP precoding matrix before the last preset time interval.
Optionally, when the change state of the user is that the user joins the wireless communication area, generating a channel matrix corresponding to the change state of the user specifically includes:
and carrying out channel estimation on the channel corresponding to the user to obtain a channel matrix corresponding to the change state of the user.
Optionally, the generating the THP precoding matrix at the current time according to the THP precoding matrix before the last preset time interval specifically includes:
based on a preset algorithm and the channel matrix, performing matrix updating on the THP precoding matrix before the last preset time interval to obtain the THP precoding matrix at the current moment.
In a second aspect, the present application discloses a THP-based precoding matrix generating device, applied to a wireless communication system, the device comprising:
the signal generation module is used for generating a user state change signal when detecting that a user enters or leaves a wireless communication area; the wireless communication area is an area formed based on signal coverage by a base station in the wireless communication system;
the acquisition module is used for acquiring the THP precoding matrix before the last preset time interval; the THP precoding matrix is a precoding matrix generated based on the THP technology;
and the generation module is used for generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval.
Optionally, the generating module is specifically configured to:
determining the change state of the user according to the user state change signal; the user's changing state includes: a user leaves the wireless communication area or a user joins the wireless communication area;
and generating the THP precoding matrix at the current moment based on the channel matrix and the THP precoding matrix before the last preset time interval.
Optionally, the generating module is specifically configured to:
and carrying out channel estimation on the channel corresponding to the user to obtain a channel matrix corresponding to the change state of the user.
In a third aspect, the present application discloses an electronic device, the device comprising: a processor, memory, system bus;
the processor and the memory are connected through the system bus;
the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the THP-based precoding matrix generation method.
In a fourth aspect, the application discloses a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the THP-based precoding matrix generation method.
Compared with the prior art, the application has the following beneficial effects: the application provides a THP-based precoding matrix generation method and related equipment, which can generate a user state change signal when detecting that a user enters or leaves a wireless communication area covered by a base station signal, and simultaneously acquire a THP precoding matrix between the last preset time intervals, wherein the THP precoding matrix is generated based on a THP technology. And finally, generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval. By the method, the THP precoding matrix at the current moment can be obtained based on the user state change signal and the THP precoding matrix at the previous moment, the THP precoding matrix at the previous moment is multiplexed and updated by utilizing the correlation of the front channel and the back channel, so that the THP precoding matrix at the current moment is obtained, the complex generation flow of the THP precoding matrix is not needed to be carried out again, the generation complexity of the THP precoding matrix is effectively reduced, and the performance of a wireless communication system is improved.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for generating a precoding matrix based on THP according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a THP-based precoding matrix generating device according to an embodiment of the present application;
fig. 3 is a comparison chart of error rates of the present application disclosed in the embodiment of the present application and the conventional THP precoding technique under the quasi-static fading condition;
fig. 4 is a comparison chart of error rates of the present application disclosed in the embodiment of the present application and the conventional THP precoding technique under the condition of slow time-varying fading;
fig. 5 is a schematic structural diagram of a THP-based precoding matrix generating electronic device according to an embodiment of the present application.
Detailed Description
As described above, with the rapid development of wireless communication technology, massive MIMO technology has become a key technology for wireless communication systems. The base station adopts a large number of antennas for signal transmission with the user terminal, plays an important role in improving the throughput of a wireless communication system, expanding the signal coverage range and the like, and in MIMO, the reliability and the stability of data transmission in the wireless communication system are improved by adopting the THP technology.
THP is a digital signal processing technology, which is used for data transmission in a multi-antenna communication system, and performs matrix transformation and precoding processing on data at a transmitting end to generate a precoding matrix, so that a receiving end can reconstruct a data stream better, thereby improving capacity and performance of the wireless communication system. THP can significantly improve data throughput and transmission reliability and quality of data in a wireless communication system. However, in the existing process of generating the precoding matrix based on the THP technology, there is often a problem that the matrix generation process is too complex, and the excessive complexity of matrix generation may increase the resources required for generating the matrix, thereby causing a problem of energy efficiency degradation of the wireless communication system. In the prior art, low complexity processing for THP is typically done from three aspects of layered hybrid precoding design, successive interference cancellation part, and hardware architecture. However, these methods can only solve the problem of high complexity of THP precoding matrix generation from the system level, and cannot solve the problem of high complexity of matrix operation from the essential matrix operation. When the number of antennas and the number of users of the base station are continuously increased, the operation complexity of the matrix is gradually increased, and the problem that the generation complexity of the THP precoding matrix is too high and the energy efficiency of the wireless communication system is affected still occurs.
Therefore, how to solve the problem of the prior art that the complexity of matrix generation is high when generating the precoding matrix based on THP is a technical problem that needs to be solved by those skilled in the art.
In order to solve the above problems, the present application provides a THP-based precoding matrix generation method and related devices, which generate a user state change signal when detecting that a user enters or leaves a wireless communication area covered by a base station signal, and simultaneously acquire a THP precoding matrix between last preset time intervals, where the THP precoding matrix is a precoding matrix generated based on a THP technology. And finally, generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval. By the method, the THP precoding matrix at the current moment can be obtained based on the user state change signal and the THP precoding matrix at the previous moment, the THP precoding matrix at the previous moment is multiplexed and updated by utilizing the correlation of the front channel and the back channel, so that the THP precoding matrix at the current moment is obtained, the complex generation flow of the THP precoding matrix is not needed to be carried out again, the generation complexity of the THP precoding matrix is effectively reduced, and the performance of a wireless communication system is improved.
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Method embodiment
Referring to fig. 1, the flow chart of a THP-based precoding matrix generation method disclosed in the embodiment of the present application specifically includes the following specific steps:
s101: generating a user state change signal when the user is detected to enter or leave the wireless communication area; the wireless communication area is an area formed based on signal coverage by a base station in the wireless communication system.
In a wireless communication system, a base station and a user covered by a signal from the base station are generally included, and accordingly, an area covered by a signal from the base station is a wireless communication area. In a wireless communication system, a base station receives a wireless signal transmitted from a user equipment through an antenna and transmits it into a core network. Meanwhile, the base station is also responsible for receiving signals to be sent to the user equipment from the core network and broadcasting them out through the antenna.
In an actual application scenario, communication between the base station and the user equipment is completed through a channel, and correspondingly, a channel matrix of the base station and the user equipment is used for describing influence and change experienced by a wireless signal when the wireless signal is transmitted in the channel. The channel matrix is expressed as a mathematical description, and is generally expressed as a matrix, wherein the number of rows in the matrix represents the number of antennas of a transmitting end, i.e. a base station, and the number of columns of the matrix represents the number of antennas of a receiving end, i.e. a user. Each matrix element in its channel matrix represents a channel gain or fading coefficient between the corresponding antennas. Thus, changes in the channel will only occur based on the entry or exit of the user, and when a channel changes, the corresponding channel matrix will also change accordingly. Therefore, in the scheme of the application, the user condition in the wireless communication area is detected in real time, and when the existence of the user entering or leaving the wireless communication area is detected, a user state change signal is generated, wherein the user state change signal is used for representing a specific user state and can be specifically divided into two states of the user leaving the wireless communication area and the user entering the wireless communication area.
S102: acquiring a THP precoding matrix before a last preset time interval; the THP precoding matrix is a precoding matrix generated based on the THP technology.
Here, the expression for the last preset time interval is described as the last time instant, so that the last preset time interval will be described hereinafter.
After the user state change signal is obtained, the THP precoding matrix before the last preset time interval is further obtained.
THP is a precoding technique in a multi-antenna system, which aims to reduce or eliminate interference suffered by a receiving end when receiving a signal by preprocessing the signal to be transmitted. Specifically, before transmitting a signal, the THP precodes the transmitted signal according to known channel state information and a preset optimization criterion to cancel interference of the signal at a receiving end, and finally generates a precoding matrix, where the precoding matrix describes how to perform precoding processing on the transmitted signal. Thus, in the course of signal transmission at each time, a THP precoding matrix is generated based on the signal transmission completed by THP, and the THP precoding matrix at each time describes a precoding processing method for the transmission signal. Therefore, based on the correlation of the front and rear channels, the THP precoding matrix at the previous moment is multiplexed to generate the precoding matrix at the current moment, so that the generation complexity of the current THP precoding matrix can be effectively reduced.
S103: and generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval.
After the state change signal of the user and the THP precoding matrix at the last moment are obtained, the THP precoding matrix at the current moment is generated based on the state change signal of the user and the THP precoding matrix at the last moment,
specifically, the process of generating the THP precoding matrix at the current time based on the user state change signal and the THP matrix before the previous preset time interval may be implemented by the following three steps:
step one, determining the change state of the user according to the user state change signal; the user's changing state includes: the user leaves the wireless communication area or the user joins the wireless communication area;
step two, when the change state of the user is that the user joins the wireless communication area, generating a channel matrix corresponding to the change state of the user;
and thirdly, generating the THP precoding matrix at the current moment based on the channel matrix and the THP precoding matrix before the last preset time interval.
Firstly, according to a state change signal of a user, determining the change state of the user. The change states of the user are specifically that the user leaves the wireless communication area and the user joins the wireless communication area, and the corresponding modes for acquiring the THP precoding matrix are different for different change states.
When the change state of the user is that the user joins the wireless communication area, the channel matrix of the user is generated at this time, and in the process of generating the channel matrix, the corresponding channel matrix can be obtained by means of channel estimation. Specifically, when a user joins a wireless communication area, the base station detects and measures according to a pilot sequence transmitted by the user equipment, so as to estimate a channel response between the user newly joining the wireless communication area and the base station.
After the corresponding channel matrix is obtained, based on the obtained channel matrix and the THP precoding matrix before the last preset time interval, the THP precoding matrix at the current moment can be generated.
In the process that the change state of the user is that the THP precoding matrix at the current moment is generated in a wireless mode, based on a preset algorithm and the obtained channel matrix, matrix updating can be carried out on the THP precoding matrix at the previous moment, and then the THP precoding matrix at the current moment is obtained.
The following is a detailed explanation of the process of updating the matrix of the THP precoding matrix at the previous moment based on the preset algorithm and the channel matrix to obtain the THP precoding matrix at the current moment:
dividing the THP precoding matrix into F, B and G, wherein F is a filter matrix, B is a beam forming matrix, G is a gain scaling matrix, the three forms the THP precoding matrix together, the last moment is marked as t moment, and correspondingly, the THP precoding matrix at the last moment is subjected to matrix updating to obtain a THP precoding matrix at the current moment, namely a THP precoding matrix at the moment t+1, and when a user is detected to join in a wireless communication area, the specific calculation process is as follows:
wherein F is t+1 ，B t+1 G t+1 THP precoding matrix corresponding to t+1 time, R t For the upper triangular matrix at the previous moment,which represents an orthogonal matrix vector, "> G V Is the product of a series of Givens matrices, P H Representing the conjugate transpose to the matrix P, +.>And Q t Respectively representing an orthogonal matrix obtained by performing QR decomposition at time t and a conjugate transpose, N represents the number of users in a wireless communication area, and p represents the position of the user
And when the user leaves the wireless communication area, the formula is specifically:
R t+1 ＝(G v R t P)(1:N-1,1:N-1),
in the conventional THP precoding matrix generation process, a THP precoding matrix is generally generated by adopting a mode of performing matrix decomposition on a channel matrix, for example:
the following will explain a procedure of generating a THP precoding matrix before a last preset time interval based on an orthogonal matrix and an upper triangular matrix:
the channel matrix is marked as H, QR decomposition is carried out on the channel matrix based on H=QR, so that an orthogonal matrix Q and an upper triangular matrix R can be obtained, and correspondingly, the THP precoding matrix is obtained by a traditional matrix decomposition mode, wherein the process is as follows:
wherein,,is the diagonal element of the upper triangular matrix R. Through the formula, the THP precoding matrixes F, B and G between the last preset time intervals can be obtained by combining the orthogonal matrix and the upper triangular matrix which are obtained based on the channel matrix.
It can be seen that compared with the existing calculation method for the THP precoding matrix, the required calculation complexity is O (MN 2 ) In the application, when user change occurs in a wireless communication area by utilizing correlation of front and rear channels, a corresponding channel matrix is obtained, the channel matrix is used for obtaining a THP precoding matrix at the last moment, and finally the THP precoding matrix at the last moment is multiplexed to update the matrix, so that the THP precoding matrix at the current moment is obtained, thereby greatly reducing the complexity of generating the THP precoding matrix at the current moment, and when p=1, namely only one user enters or leaves the wireless communication area in the wireless communication area, the calculation complexity of generating the THP precoding matrix at the current moment by utilizing the THP precoding matrix at the last moment is only required to be O (MN).
The present application may be further understood with reference to a bit error rate comparison chart of the present application disclosed in fig. 3 and a conventional THP precoding technique under a quasi-static fading condition, and a bit error rate comparison chart of the present application disclosed in fig. 4 and a conventional THP precoding technique under a slow time-varying fading condition. The parameters are specifically set to 256 base station antennas, and the number of users is 12. The classical millimeter wave channel is adopted, the carrier frequency is 28GHz, the transmitting and receiving antennas are all uniform linear arrays, and the antenna spacing is half wavelength. The transmission angle and the arrival angle follow a uniform distribution [0,2 pi ], and the number of paths is 1.
It can be seen that in the case of quasi-static fading, the performance of the precoding matrix of the present application is consistent with the results of conventional THP. In the case of slow time-varying fading, it can be seen that the performance of the precoding method proposed by the present application has a certain loss compared with the traditional THP, but can be fully received. Along with the continuous increase of the scale of the base station antenna and the number of users, the complexity of the traditional THP algorithm is improved, so that the traditional THP algorithm cannot be applied to an actual system, and the THP precoding matrix generation method provided by the application can greatly reduce the generation complexity of the THP precoding matrix while obtaining better performance in the actual system.
As an alternative embodiment, after determining the change state of the user, the method further comprises the following steps:
step one, when the user change state of the base station is that the user leaves the area, generating the THP precoding matrix at the current moment according to the THP precoding matrix before the last preset time interval.
When the user is in a change state that the user leaves the area, the user is not required to acquire a channel matrix of the user to participate in the generation process of the THP precoding matrix at the current moment, and the THP precoding matrix at the current moment can be obtained by directly based on the THP precoding matrix at the previous moment and updating the matrix.
The embodiment provides a THP-based precoding matrix generation method and related equipment, which can generate a user state change signal when a user is detected to enter or leave a wireless communication area covered by a base station signal, and acquire a THP precoding matrix between the last preset time intervals, wherein the THP precoding matrix is generated based on a THP technology. And finally, generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval. By the method, the THP precoding matrix at the current moment can be obtained based on the user state change signal and the THP precoding matrix at the previous moment, the THP precoding matrix at the previous moment is multiplexed and updated by utilizing the correlation of the front channel and the back channel, so that the THP precoding matrix at the current moment is obtained, the complex generation flow of the THP precoding matrix is not needed to be carried out again, the generation complexity of the THP precoding matrix is effectively reduced, and the performance of a wireless communication system is improved.
The following describes a THP-based precoding matrix generating device according to an embodiment of the present application, and the THP-based precoding matrix generating device described below and the THP-based precoding matrix generating method described above may be referred to correspondingly.
Device embodiment
Referring to fig. 2, the structure diagram of a THP-based precoding matrix generating device according to an embodiment of the present application specifically includes the following modules:
a signal generating module 100 for generating a user status change signal when it is detected that a user enters or leaves a wireless communication area; the wireless communication area is an area formed based on signal coverage by a base station in the wireless communication system;
an obtaining module 200, configured to obtain a THP precoding matrix before a last preset time interval; the THP precoding matrix is a precoding matrix generated based on the THP technology;
and the generating module 300 is configured to generate a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval.
Optionally, the generating module 300 is specifically configured to:
determining the change state of the user according to the user state change signal; the user's changing state includes: a user leaves the wireless communication area or a user joins the wireless communication area;
and generating the THP precoding matrix at the current moment based on the channel matrix and the THP precoding matrix before the last preset time interval.
Optionally, the generating module 300 is specifically configured to:
and carrying out channel estimation on the channel corresponding to the user to obtain a channel matrix corresponding to the change state of the user.
Optionally, the generating module 300 is specifically configured to:
and when the user change state of the base station is that the user leaves the area, generating the THP precoding matrix at the current moment according to the THP precoding matrix before the last preset time interval.
Optionally, the generating module 300 is specifically configured to:
based on a preset algorithm and the channel matrix, performing matrix updating on the THP precoding matrix before the last preset time interval to obtain the THP precoding matrix at the current moment.
Electronic device embodiment
Referring to fig. 5, the schematic structural diagram of an electronic device according to an embodiment of the present application includes:
a memory 11 for storing a computer program;
a processor 12, configured to implement the steps of the THP-based precoding matrix generation method according to any of the method embodiments described above when executing the computer program.
In this embodiment, the device may be a vehicle-mounted computer, a PC (Personal Computer ), or a terminal device such as a smart phone, a tablet computer, a palm computer, or a portable computer.
The device may include a memory 11, a processor 12, and a bus 13.
The memory 11 includes at least one type of readable storage medium including flash memory, a hard disk, a multimedia card, a card memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 11 may in some embodiments be an internal storage unit of the device, such as a hard disk of the device. The memory 11 may in other embodiments also be an external storage device of the device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the device. Further, the memory 11 may also include both an internal storage unit of the device and an external storage device. The memory 11 may be used not only for storing application software installed in the device and various types of data, such as program codes for executing a failure prediction method, etc., but also for temporarily storing data that has been output or is to be output.
The processor 12 may in some embodiments be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor or other data processing chip for executing program code or processing data stored in the memory 11, such as program code for performing a fault prediction method, etc.
The bus 13 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in fig. 4, but not only one bus or one type of bus.
Further, the device may also include a network interface 14, and the network interface 14 may optionally include a wired interface and/or a wireless interface (e.g., WI-FI interface, bluetooth interface, etc.), typically used to establish a communication connection between the device and other electronic devices.
Optionally, the device may further comprise a user interface 15, the user interface 15 may comprise a Display (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 15 may further comprise a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-emitting diode) touch, or the like. The display may also be referred to as a display screen or display unit, as appropriate, for displaying information processed in the device and for displaying a visual user interface.
Fig. 5 shows only a device having components 11-15, it will be understood by those skilled in the art that the configuration shown in fig. 5 is not limiting of the device and may include fewer or more components than shown, or may combine certain components, or a different arrangement of components.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. In particular, for the method apparatus, the electronic device and the vehicle, since they are substantially similar to the method embodiments, the description is relatively simple, and the relevant points are referred to in the description of the method embodiments. The method device, the electronic apparatus and the vehicle described above are only schematic, wherein the units described as separate parts may or may not be physically separated, and the parts as unit prompts may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present application without undue burden.
The foregoing is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (10)
1. A THP-based precoding matrix generation method, which is applied to a wireless communication system, the method comprising:
generating a user state change signal when the user is detected to enter or leave the wireless communication area; the wireless communication area is an area formed based on signal coverage by a base station in the wireless communication system;
acquiring a THP precoding matrix before a last preset time interval; the THP precoding matrix is a precoding matrix generated based on the THP technology;
and generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval.
2. The method of claim 1, wherein the generating the THP precoding matrix at the current time according to the user state change signal and the THP precoding matrix before the last preset time interval specifically includes:
determining the change state of the user according to the user state change signal; the user's changing state includes: the user leaves the wireless communication area or the user joins the wireless communication area;
when the change state of the user is that the user joins the wireless communication area, generating a channel matrix corresponding to the change state of the user;
and generating the THP precoding matrix at the current moment based on the channel matrix and the THP precoding matrix before the last preset time interval.
3. The method of claim 2, wherein after determining the user's status of change based on the user status change signal, further comprising:
and when the user change state of the base station is that the user leaves the area, generating the THP precoding matrix at the current moment according to the THP precoding matrix before the last preset time interval.
4. The method according to claim 2, wherein the generating a channel matrix corresponding to the change state of the user when the change state of the user is that the user joins the wireless communication area specifically comprises:
and carrying out channel estimation on the channel corresponding to the user to obtain a channel matrix corresponding to the change state of the user.
5. The method of claim 2, wherein the generating the THP precoding matrix at the current time based on the channel matrix and the THP precoding matrix before the last preset time interval specifically includes:
based on a preset algorithm and the channel matrix, performing matrix updating on the THP precoding matrix before the last preset time interval to obtain the THP precoding matrix at the current moment.
6. A THP-based precoding matrix generation apparatus for use in a wireless communication system, the apparatus comprising:
the signal generation module is used for generating a user state change signal when detecting that a user enters or leaves a wireless communication area; the wireless communication area is an area formed based on signal coverage by a base station in the wireless communication system;
the acquisition module is used for acquiring the THP precoding matrix before the last preset time interval; the THP precoding matrix is a precoding matrix generated based on the THP technology;
and the generation module is used for generating a THP precoding matrix at the current moment according to the user state change signal and the THP precoding matrix before the last preset time interval.
7. The apparatus of claim 6, wherein the generating module is specifically configured to:
determining the change state of the user according to the user state change signal; the user's changing state includes: a user leaves the wireless communication area or a user joins the wireless communication area;
and generating the THP precoding matrix at the current moment based on the channel matrix and the THP precoding matrix before the last preset time interval.
8. The apparatus of claim 7, wherein the generating module is specifically configured to:
and carrying out channel estimation on the channel corresponding to the user to obtain a channel matrix corresponding to the change state of the user.
9. An electronic device, the device comprising: a processor, memory, system bus;
the processor and the memory are connected through the system bus;
the memory is for storing one or more programs, the one or more programs comprising instructions, which when executed by the processor, cause the processor to perform the THP-based precoding matrix generation method of any one of claims 1-5.
10. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the THP-based precoding matrix generation method of any one of claims 1-5.
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| CN202311064199.XA CN116865801A (en) | 2023-08-22 | 2023-08-22 | A THP-based precoding matrix generation method and related equipment |
| PCT/CN2023/115755 WO2025039281A1 (en) | 2023-08-22 | 2023-08-30 | Thp-based precoding matrix generation method, and related device |
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| WO2011028301A1 (en) * | 2009-09-04 | 2011-03-10 | Hitachi, Ltd. | Tomlinson harashima precoding with additional receiver processing in a multi-user multiple-input multiple-output wireless transmission system |
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