WO2023241215A1 - 一种通信方法及设备 - Google Patents

一种通信方法及设备 Download PDF

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Publication number
WO2023241215A1
WO2023241215A1 PCT/CN2023/089376 CN2023089376W WO2023241215A1 WO 2023241215 A1 WO2023241215 A1 WO 2023241215A1 CN 2023089376 W CN2023089376 W CN 2023089376W WO 2023241215 A1 WO2023241215 A1 WO 2023241215A1
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WO
WIPO (PCT)
Prior art keywords
data
reference signal
demodulation
precoding matrix
demodulation reference
Prior art date
Application number
PCT/CN2023/089376
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English (en)
French (fr)
Inventor
汪凡
张长
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华为技术有限公司
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Publication of WO2023241215A1 publication Critical patent/WO2023241215A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • 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
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • 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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

Definitions

  • the present application relates to the field of wireless technology, and in particular, to a communication method and device.
  • the signal sent by the transmitting end to carry data needs to be modulated, and the signal received by the corresponding receiving end is a modulated signal. Accordingly, after receiving a signal, the receiving end usually needs to demodulate the received signal to obtain the data carried by the signal.
  • the present application provides a communication method and communication device, which are used to realize the signal demodulation process of the receiving end and at the same time improve the demodulation performance of the receiving end.
  • the first aspect of the present application provides a communication method.
  • the method is executed by the receiving end, or the method is executed by some components in the receiving end (such as a processor, a chip or a chip system, etc.), or the method can also be executed by a capable Logic module or software implementation that implements all or part of the receiver functions.
  • the communication method is described by taking the communication method being executed by the receiving end as an example.
  • the receiving end receives the first data; the receiving end receives the first demodulation reference signal and the second demodulation reference signal, and the first demodulation reference signal and the second demodulation reference signal are used to demodulate the First data; the receiving end demodulates the first data based on the first demodulation reference signal and the second demodulation reference signal.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end are used to demodulate the first data, so that after the receiving end receives the first data, the receiving end A demodulation reference signal and the second demodulation reference signal demodulate the first data.
  • the receiving end obtains demodulation information by receiving the first demodulation reference signal and the second demodulation reference signal, and performs demodulation of the received data based on the demodulation information.
  • the first data is demodulated to implement the signal demodulation process at the receiving end.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end can carry more More demodulation information enables the receiving end to demodulate the received data based on more demodulation information to improve demodulation performance.
  • the receiving end involved in this application may be a network device or a terminal device.
  • demodulation information can be expressed as demodulation matrix, detection matrix, demodulation matrix information, etc.
  • the first data is carried on a first signal, and the first signal is obtained based on the first data and a conjugate of the first data.
  • the first data received by the receiving end is carried on the first signal, and the first signal is based on the The first data and the conjugate of the first data are obtained.
  • the first signal is obtained based on wide linear transformation of the first data, so that the first signal received by the receiving end supports the scenario of wide linear precoding.
  • the first data includes a real part and an imaginary part
  • the conjugate of the first data also includes a real part and an imaginary part.
  • the real part of the first data is the same as the real part of the conjugate of the first data
  • the imaginary part of the first data and the imaginary part of the conjugate of the first data are opposite numbers of each other.
  • the first signal is obtained by a wide linear transformation based on the first data. It can also be stated that the first signal is obtained by a linear transformation based on the first data and the conjugate linear transformation of the first data.
  • x represents the first signal
  • b represents the first data
  • b * represents the conjugate of the first data
  • T 1 represents the precoding matrix of the first data
  • T 2 represents the conjugate of the first data. precoding matrix.
  • the first signal can also be implemented in other ways.
  • the first signal satisfies:
  • ⁇ and ⁇ are two parameters that measure x, representing the non-circular coefficient and rotation angle respectively, e is a natural constant, and the value of j is
  • the number of layers of the first data is m, and m is a natural number greater than or equal to 1; wherein, the relationship between the first demodulation reference signal and the second demodulation reference signal is The number of ports is m.
  • the number of layers of the first data, the number of ports of the first demodulation reference signal and the number of ports of the second demodulation reference signal are all m. That is, the number of layers of the first data, the number of ports of the first demodulation reference signal and the number of ports of the second demodulation reference signal are all the same, which facilitates the receiving end to decode the data of the same layer based on the demodulation reference signal with the same number of ports. to improve the success rate of data demodulation.
  • the number of layers of first data may also be referred to as the number of streams of first data.
  • the number of ports of the first demodulation reference signal is less than m, and/or the number of ports of the second demodulation reference signal is less than m.
  • the number of the first data layer is 2, and the number of the first demodulation reference signal port is 1.
  • the demodulation reference signal of port 1 corresponds to carrying the first data of layer 2, and the sending end is preset
  • the coding matrix implicitly imposes constraints, such as using the same precoding for the two layers of data. This implementation can reduce the overhead of the reference signal.
  • the first data satisfies the non-regular Gaussian signaling characteristics, and/or the first signal satisfies the non-regular Gaussian signaling characteristics.
  • the signal (including the first data and/or the first signal) received by the receiving end satisfies the non-regular Gaussian signaling characteristics, that is, the signal received by the receiving end no longer requires I-channel signals and Q-channel signals (i.e. In-phase signals and quadrature signals) are independently and identically distributed, or the pseudo-covariance matrix of the signal received by the receiving end is not zero. Therefore, introducing more signal degrees of freedom can achieve an optimized design to combat multi-user interference and match spatial channels, allowing the above technical solution to be applied to multi-user multiple input and multiple output (MU-MIMO) systems. .
  • MU-MIMO multi-user multiple input and multiple output
  • the first demodulation reference signal carries first demodulation information
  • the second demodulation reference signal carries second demodulation information
  • the first demodulation information and the The second demodulation information is used to obtain an estimate of the first data.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end are used for Carrying different demodulation information enables the receiving end to demodulate the first data based on the different demodulation information to obtain an estimate of the first data.
  • the estimation of the first data refers to the data that is received by the receiving device and recovered locally after the first data sent by the sending end is transmitted through the channel.
  • the receiving end determines the estimate of the first data as the first data sent by the sending end in order to obtain the information carried by the first data.
  • the estimate of the first data obtained by the receiving end may not be completely equivalent to the first data sent by the transmitting end.
  • the first demodulation reference signal is obtained by precoding based on a first precoding matrix, and the first precoding matrix is associated with the first demodulation information;
  • the second The demodulation reference signal is obtained by precoding based on a second precoding matrix, and the second precoding matrix is associated with the second demodulation information.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end are respectively precoded through different precoding matrices, so that the receiving end determines the associated solution based on the different precoding matrices. adjust information.
  • the receiving end when the receiving end does not need to demodulate the demodulation reference signals of other users (or users corresponding to other receiving ends), the receiving end bases the received first demodulation reference signal and the second Demodulating the reference signal can realize demodulation of the received first data, which can reduce the detection complexity of the receiving end.
  • the first precoding matrix associated with the first demodulation information includes:
  • F 1 represents the first precoding matrix
  • H + is the inverse matrix or generalized inverse matrix of H
  • the H represents the channel information of the channel between the transmitting end and the receiving end, is the conjugate transpose of R 1 , where R 1 represents the first demodulation information
  • the second precoding matrix associated with the second demodulation information includes:
  • F 2 represents the second precoding matrix
  • R 2 which represents the second demodulation information
  • the first precoding matrix is not equal to the precoding matrix of the first data, and/or the second precoding matrix is not equal to the common precoding matrix of the first data. Yoke precoding matrix.
  • the first demodulation information and the second demodulation information required by the receiving end for multi-user detection are related to the precoding matrix of the receiving end's data (such as the first data), It is also related to the precoding matrices of data of other receiving ends (or users corresponding to other receiving ends) other than the receiving end.
  • the first precoding matrix used to precode the first demodulation information is not equal to the precoding matrix used to precode the first data, and/or the first precoding matrix used to precode the second demodulation information.
  • the processed second precoding matrix is not identical to the precoding matrix used to precode the conjugate of the first data, so that the solution can be applied to the data transmission process in the MU-MIMO system.
  • the second aspect of the present application provides a communication method.
  • the method is executed by the sending end, or the method is executed by some components in the sending end (such as a processor, a chip or a chip system, etc.), or the method can also be executed by a capable Logic module or software implementation that implements all or part of the sender functions.
  • the sending end sends first data; the sending end sends a first demodulation reference signal and a second demodulation reference signal, and the first demodulation reference signal and the second demodulation reference signal are used to demodulate the First data.
  • the first demodulation reference signal and the second demodulation reference signal sent by the sending end are used to demodulate the first data, so that after the receiving end receives the first data, the receiving end The demodulation reference signal and the second demodulation reference signal demodulate the first data.
  • the receiving end obtains demodulation information by receiving the first demodulation reference signal and the second demodulation reference signal, and performs demodulation of the received data based on the demodulation information.
  • the first data is demodulated to implement the signal demodulation process at the receiving end.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end can carry more More demodulation information enables the receiving end to demodulate the received data based on more demodulation information to improve demodulation performance.
  • the sending end involved in this application may be a network device or a terminal device.
  • the first data is carried on a first signal, and the first signal is obtained based on the first data and the conjugate of the first data.
  • the first data sent by the transmitting end is carried on the first signal, and the first signal is obtained based on the first data and the conjugate of the first data.
  • the first signal is obtained based on wide linear transformation of the first data, so that the first signal sent by the transmitting end supports the scenario of wide linear precoding.
  • the first data includes a real part and an imaginary part
  • the conjugate of the first data also includes a real part and an imaginary part.
  • the real part of the first data is the same as the real part of the conjugate of the first data
  • the imaginary part of the first data and the imaginary part of the conjugate of the first data are opposite numbers of each other.
  • the first signal is obtained by a wide linear transformation based on the first data. It can also be stated that the first signal is obtained by a linear transformation based on the first data and the conjugate linear transformation of the first data.
  • x represents the first signal
  • b represents the first data
  • b * represents the conjugate of the first data
  • T 1 represents the precoding matrix of the first data
  • T 2 represents the conjugate of the first data. precoding matrix.
  • the number of layers of the first data is m, and m is a natural number greater than or equal to 1; wherein, the relationship between the first demodulation reference signal and the second demodulation reference signal is The number of ports is m.
  • the number of layers of the first data, the number of ports of the first demodulation reference signal and the number of ports of the second demodulation reference signal are all m. That is, the number of layers of the first data, the number of ports of the first demodulation reference signal and the number of ports of the second demodulation reference signal are all the same, which facilitates the receiving end to decode the data of the same layer based on the demodulation reference signal with the same number of ports. to improve the success rate of data demodulation.
  • the number of layers of first data may also be referred to as the number of streams of first data.
  • the number of ports of the first demodulation reference signal is less than m, and/or the number of ports of the second demodulation reference signal is less than m.
  • the first data satisfies the non-regular Gaussian signaling characteristics, and/or the first signal satisfies the non-regular Gaussian signaling characteristics.
  • the signal (including the first data and/or the first signal) received by the receiving end satisfies the non-regular Gaussian signaling characteristics, that is, the signal received by the receiving end no longer requires I-channel signals and Q-channel signals (i.e. In-phase signals and quadrature signals) are independently and identically distributed, or the pseudo-covariance matrix of the signal received by the receiving end is not zero. Therefore, introducing more signal degrees of freedom can achieve an optimized design to combat multi-user interference and match spatial channels, allowing the above technical solution to be applied to multi-user multiple input and multiple output (MU-MIMO) systems. .
  • MU-MIMO multi-user multiple input and multiple output
  • the first demodulation reference signal carries first demodulation information
  • the second demodulation reference signal carries second demodulation information
  • the first demodulation information and the The second demodulation information is used to obtain an estimate of the first data.
  • the first demodulation reference signal and the second demodulation reference signal sent by the sending end are respectively used to carry different demodulation information, so that the receiving end can perform the first data based on the different demodulation information. Demodulate to obtain an estimate of this first data.
  • the estimation of the first data refers to the data that is received by the receiving device and recovered locally after the first data sent by the sending end is transmitted through the channel.
  • the receiving end determines the estimate of the first data as the first data sent by the sending end in order to obtain the information carried by the first data.
  • the estimate of the first data obtained by the receiving end may not be completely equivalent to the first data sent by the transmitting end.
  • the first demodulation reference signal is obtained by precoding based on a first precoding matrix, and the first precoding matrix is associated with the first demodulation information;
  • the second The demodulation reference signal is obtained by precoding based on a second precoding matrix, and the second precoding matrix is associated with the second demodulation information.
  • the first demodulation reference signal and the second demodulation reference signal sent by the transmitting end are respectively precoded through different precoding matrices, so that the receiving end receives the first demodulation reference signal and the second demodulation reference signal. After receiving the reference signal, the receiving end determines the associated demodulation information based on the different precoding matrices.
  • the receiving end when the receiving end does not need to demodulate the demodulation reference signals of other users (or users corresponding to other receiving ends), the receiving end bases the received first demodulation reference signal and the second Demodulating the reference signal can realize demodulation of the received first data, which can reduce the detection complexity of the receiving end.
  • the first precoding matrix associated with the first demodulation information includes:
  • F 1 represents the first precoding matrix
  • H + is the inverse matrix or generalized inverse matrix of H
  • the H represents the channel information of the channel between the transmitting end and the receiving end, is the conjugate transpose of R 1 , where R 1 represents the first demodulation information
  • the second precoding matrix associated with the second demodulation information includes:
  • F 2 represents the second precoding matrix
  • R 2 which represents the second demodulation information
  • the first precoding matrix is not equal to the precoding matrix of the first data, and/or the second precoding matrix is not equal to the conjugate precoding matrix of the first data.
  • the first demodulation information and the second demodulation information required by the receiving end for multi-user detection are related to the precoding matrix of the receiving end's data (such as the first data), It is also related to the precoding matrices of data of other receiving ends (or users corresponding to other receiving ends) other than the receiving end.
  • the first precoding matrix used to precode the first demodulation information is not equal to the precoding matrix used to precode the first data, and/or the first precoding matrix used to precode the second demodulation information.
  • the processed second precoding matrix is not identical to the precoding matrix used to precode the conjugate of the first data, so that the solution can be applied to the data transmission process in the MU-MIMO system.
  • a third aspect of the present application provides a communication device that can implement the method in the above first aspect or any possible implementation of the first aspect.
  • the device includes corresponding units or modules for performing the above method.
  • the units or modules included in the device can be implemented by software and/or hardware.
  • the device can be a receiving end, or the device can be a component in the receiving end (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module that can implement all or part of the functions of the receiving end or software.
  • the device includes a transceiver unit and a processing unit;
  • the transceiver unit is used to receive the first data
  • the transceiver unit is also configured to receive a first demodulation reference signal and a second demodulation reference signal, and the first demodulation reference signal and the second demodulation reference signal are used to demodulate the first data;
  • the processing unit is configured to demodulate the first data based on the first demodulation reference signal and the second demodulation reference signal.
  • the first data is carried on a first signal, and the first signal is obtained based on the first data and the conjugate of the first data.
  • x represents the first signal
  • b represents the first data
  • b * represents the conjugate of the first data
  • T 1 represents the precoding matrix of the first data
  • T 2 represents the conjugate of the first data. precoding matrix.
  • the number of layers of the first data is m, and m is a natural number greater than or equal to 1;
  • the number of ports of the first demodulation reference signal and the second demodulation reference signal is m.
  • the first data satisfies the non-regular Gaussian signaling characteristics, and/or the first signal satisfies the non-regular Gaussian signaling characteristics.
  • the first demodulation reference signal carries first demodulation information
  • the second demodulation reference signal carries second demodulation information
  • the first demodulation information and the second demodulation information are used to obtain the first data estimate.
  • the first demodulation reference signal is obtained by precoding based on a first precoding matrix, and the first precoding matrix is associated with the first demodulation information;
  • the second demodulation reference signal is obtained by precoding based on a second precoding matrix, and the second precoding matrix is associated with the second demodulation information.
  • the first precoding matrix associated with the first demodulation information includes:
  • F 1 represents the first precoding matrix
  • H + is the inverse matrix or generalized inverse matrix of H
  • the H represents the channel information of the channel between the transmitting end and the receiving end, is the conjugate transpose of R 1 , where R 1 represents the first demodulation information
  • the second precoding matrix associated with the second demodulation information includes:
  • F 2 represents the second precoding matrix
  • R 2 which represents the second demodulation information
  • the first precoding matrix is not equal to the precoding matrix of the first data, and/or the second precoding matrix is not equal to the conjugate precoding matrix of the first data.
  • the component modules of the communication device can also be used to perform the steps performed in each possible implementation manner of the first aspect, and achieve corresponding technical effects.
  • the first aspect here No longer.
  • a fourth aspect of the present application provides a communication device that can implement the method in the above second aspect or any possible implementation manner of the second aspect.
  • the device includes corresponding units or modules for performing the above method.
  • the units or modules included in the device can be implemented by software and/or hardware.
  • the device can be a sending end, or the device can be a component in the sending end (such as a processor, a chip or a chip system, etc.), or the device can also be a logic module that can realize all or part of the sending end functions or software.
  • the device includes a transceiver unit and a processing unit;
  • the processing unit is used to generate first data
  • the transceiver unit is used to send first data
  • the processing unit is also used for a first demodulation reference signal and a second demodulation reference signal, and the first demodulation reference signal and the second demodulation reference signal are used to demodulate the first data;
  • the transceiver unit is also used to send the first demodulation reference signal and the second demodulation reference signal.
  • the first data is carried on a first signal, and the first signal is obtained based on the first data and the conjugate of the first data.
  • x represents the first signal
  • b represents the first data
  • b * represents the conjugate of the first data
  • T 1 represents the precoding matrix of the first data
  • T 2 represents the conjugate of the first data. precoding matrix.
  • the number of layers of the first data is m, and m is a natural number greater than or equal to 1;
  • the number of ports of the first demodulation reference signal and the second demodulation reference signal is m.
  • the first data satisfies the non-regular Gaussian signaling characteristics, and/or the first signal satisfies the non-regular Gaussian signaling characteristics.
  • the first demodulation reference signal carries first demodulation information
  • the second demodulation reference signal carries second demodulation information
  • the first demodulation information and the second demodulation information are used to obtain the first data estimate.
  • the first demodulation reference signal is obtained by precoding based on a first precoding matrix, and the first precoding matrix is associated with the first demodulation information;
  • the second demodulation reference signal is obtained by precoding based on a second precoding matrix, and the second precoding matrix is associated with the second demodulation information.
  • the first precoding matrix associated with the first demodulation information includes:
  • F 1 represents the first precoding matrix
  • H + is the inverse matrix or generalized inverse matrix of H
  • the H represents the channel information of the channel between the transmitting end and the receiving end, is the conjugate transpose of R 1 , where R 1 represents the first demodulation information
  • the second precoding matrix associated with the second demodulation information includes:
  • F 2 represents the second precoding matrix
  • R 2 which represents the second demodulation information
  • the first precoding matrix is not equal to the precoding matrix of the first data, and/or the second precoding matrix is not equal to the conjugate precoding matrix of the first data.
  • the component modules of the communication device can also be used to perform the steps performed in each possible implementation manner of the second aspect, and achieve corresponding technical effects.
  • the second aspect here No longer.
  • a fifth aspect of the embodiment of the present application provides a communication device, including at least one processor, the at least one processor being coupled to a memory;
  • This memory is used to store programs or instructions
  • the at least one processor is configured to execute the program or instructions, so that the device implements the method described in the aforementioned first aspect or any possible implementation manner of the first aspect.
  • a sixth aspect of the embodiment of the present application provides a communication device, including at least one processor, where the at least one processor is coupled to a memory;
  • This memory is used to store programs or instructions
  • the at least one processor is configured to execute the program or instructions, so that the device implements the method described in the aforementioned second aspect or any possible implementation manner of the second aspect.
  • the seventh aspect of the embodiment of the present application provides a communication device, including at least one logic circuit and an input and output interface;
  • the input and output interface is used to input first data
  • the input and output interface is also used to input the first demodulation reference signal and the second demodulation reference signal
  • the logic circuit is used to perform the method described in the aforementioned first aspect or any possible implementation manner of the first aspect.
  • the eighth aspect of the embodiment of the present application provides a communication device, including at least one logic circuit and an input and output interface;
  • the input and output interface is used to output the first data
  • the input and output interface is also used to output the first demodulation reference signal and the second demodulation reference signal
  • the logic circuit is used to perform the method described in the aforementioned second aspect or any possible implementation manner of the second aspect.
  • a ninth aspect of the embodiment of the present application provides a computer-readable storage medium.
  • the computer-readable storage medium is used to store one or more computer-executable instructions.
  • the processor executes the above-mentioned step.
  • the method described in one aspect or any possible implementation of the first aspect, or the processor executes the method described in the above second aspect or any possible implementation of the second aspect.
  • a tenth aspect of the embodiment of the present application provides a computer program product (or computer program).
  • the processor executes the above-mentioned first aspect or any possible implementation of the first aspect.
  • method, or the processor performs the method of the second aspect or any of the possible implementations of the second aspect.
  • An eleventh aspect of the embodiment of the present application provides a chip system.
  • the chip system includes at least one processor for supporting a communication device to implement the functions involved in the above first aspect or any possible implementation of the first aspect. , or, used to support the communication device to implement the functions involved in the above second aspect or any possible implementation manner of the second aspect.
  • the chip system may also include a memory for storing necessary program instructions and data of the communication device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the chip system further includes an interface circuit that provides program instructions and/or data to the at least one processor.
  • a twelfth aspect of the embodiments of the present application provides a communication system, which includes the communication device of the third aspect and the communication device of the fourth aspect, and/or the communication system includes the communication device of the fifth aspect and The communication device of the sixth aspect, and/or the communication system includes the communication device of the seventh aspect and the communication device of the eighth aspect.
  • FIG. 1 is a schematic diagram of the communication system involved in this application.
  • FIG. 2 is a schematic diagram of the communication method provided by this application.
  • FIG. 3 is another schematic diagram of the communication system involved in this application.
  • FIG. 4 is another schematic diagram of the communication system involved in this application.
  • FIG. 5 is a schematic diagram of the communication device provided by this application.
  • FIG. 6 is another schematic diagram of the communication device provided by this application.
  • Figure 7 is another schematic diagram of the communication device provided by the present application.
  • Figure 8 is another schematic diagram of the communication device provided by this application.
  • Terminal device It can be a wireless terminal device that can receive network device scheduling and instruction information.
  • the wireless terminal device can be a device that provides voice and/or data connectivity to the user, or a handheld device with a wireless connection function, or Other processing equipment connected to the wireless modem.
  • the terminal device can communicate with one or more core networks or the Internet via a radio access network (RAN).
  • RAN radio access network
  • the terminal device can be a mobile terminal device, such as a mobile phone (also known as a "cellular" phone, mobile phone). phone), computer and data card, which may be, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and/or data with the wireless access network.
  • PCS personal communication service
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • Tablets tablets Computers
  • computers with wireless transceiver functions and other equipment.
  • Wireless terminal equipment can also be called a system, subscriber unit, subscriber station, mobile station, mobile station (MS), remote station, access point ( access point, AP), remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), subscriber station (subscriber station, SS), client equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc.
  • the terminal device can also be a wearable device and a next-generation communication system, such as a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (PLMN).
  • PLMN public land mobile network
  • Network equipment It can be equipment in a wireless network.
  • network equipment can be a radio access network (RAN) node (or equipment) that connects terminal equipment to the wireless network, and can also be called a base station.
  • RAN equipment are: new generation base station (generation Node B, gNodeB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), wireless network in 5G communication system Controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (e.g., home evolved Node B , or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc.
  • the network device may include a centralized unit (CU) node, a distributed unit (CU) node, a distributed unit (CU) node,
  • the network device can send configuration information (for example, carried in a scheduling message and/or an instruction message) to the terminal device, and the terminal device further performs network configuration based on the configuration information, so that the network configuration between the network device and the terminal device is aligned; or , through the network configuration preset on the network device and the network configuration preset on the terminal device, the network configuration between the network device and the terminal device is aligned.
  • “alignment” refers to the alignment of network equipment with terminal equipment.
  • the network device may be other devices that provide wireless communication functions for terminal devices.
  • the embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment. For convenience of description, the embodiments of this application are not limited.
  • Network equipment may also include core network equipment.
  • Core network equipment may include, for example, access and mobility management function (AMF), user plane function (UPF) or session management function (SMF). wait.
  • AMF access and mobility management function
  • UPF user plane function
  • SMF session management function
  • the device used to implement the function of the network device may be a network device, or may be a device that can support the network device to implement the function, such as a chip system, and the device may be installed in the network device.
  • the technical solution provided by the embodiment of the present application the technical solution provided by the embodiment of the present application is described by taking the device for realizing the functions of the network device being a network device as an example.
  • Configuration and preconfiguration In this application, configuration and preconfiguration will be used at the same time.
  • Configuration means that network devices such as base stations or servers send configuration information or parameter values of some parameters to the terminal through messages or signaling, so that the terminal can determine communication parameters or transmission resources based on these values or information.
  • Preconfiguration is similar to configuration. It can be a way for network equipment such as base stations or servers to send parameter information or values to terminals through communication links or carriers; it can also be the definition of corresponding parameters or parameter values (for example, in standards This application does not limit this by explicitly stipulating the value of the parameter), or by writing the relevant parameters or values into the terminal device in advance. Furthermore, these values and parameters can be changed or updated.
  • the transmitter can use a precoding matrix that matches the channel to process the signal to be sent and then send it, so that the precoded sent signal can adapt to the channel. Therefore, compared with the process in which the receiving end receives a non-precoded transmission signal and eliminates inter-channel effects, the complexity of the processing process in which the receiving end receives a precoded transmission signal and eliminates inter-channel effects is reduced. Therefore, by precoding the signal to be transmitted, the quality of the received signal (such as signal to interference plus noise ratio (SINR), etc.) can be improved.
  • SINR signal to interference plus noise ratio
  • the transmitter and multiple receivers can also be transmitted on the same time-frequency resources, which is to achieve multiple user multiple input multiple output (MU-MIMO).
  • the sending end can be a terminal device, and the receiving end can be a network device; or the sending end can be a network device, and the receiving end can be a terminal device; or the sending end can be a network device, and the receiving end can be a network device.
  • the sending end can be a network device; or the sending end can be a terminal device, and the receiving end can be a terminal device.
  • the sending end can also perform precoding in other ways. For example, when the channel information (such as but not limited to the channel matrix) cannot be obtained, a preset precoding matrix or weighting processing method is used to perform precoding. For the sake of brevity, its specific content will not be repeated in this article.
  • Antenna port It can be referred to as port. It can be understood as a transmitting antenna recognized by the receiving end, or a transmitting antenna that can be distinguished in space.
  • An antenna port can be preconfigured for each virtual antenna. Each virtual antenna can be a weighted combination of multiple physical antennas. Each antenna port can correspond to a reference signal. Therefore, each antenna port A port may be called a reference signal port, for example, a demodulation reference signal (DMRS) port, a sounding reference signal (SRS) port, etc.
  • DMRS demodulation reference signal
  • SRS sounding reference signal
  • for instruction may include for direct instruction and for indirect instruction.
  • indication information when it is described that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.
  • the information indicated by the indication information is called information to be indicated.
  • the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated, etc.
  • the information to be indicated may also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance.
  • the indication of specific information can also be achieved by means of a pre-agreed (for example, protocol stipulated) arrangement order of each piece of information, thereby reducing the indication overhead to a certain extent.
  • the information to be instructed can be sent together as a whole, or can be divided into multiple sub-information and sent separately, and the sending period and/or sending timing of these sub-information can be the same or different.
  • the specific sending method is not limited in this application.
  • the sending period and/or sending timing of these sub-information may be predefined, for example, according to a protocol, or may be configured by the transmitting device by sending configuration information to the receiving device.
  • the configuration information may include, for example but not limited to, one or a combination of at least two of radio resource control signaling, media access control (media access control, MAC) layer signaling and physical layer signaling.
  • radio resource control signaling includes, for example, radio resource control (RRC) signaling;
  • MAC layer signaling for example, includes MAC control element (CE);
  • physical layer signaling for example, includes downlink control information (downlink control information, DCI).
  • system and “network” in the embodiments of this application can be used interchangeably.
  • “At least one” means one or more, and “plurality” means two or more.
  • “And/or” describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist simultaneously, and B alone exists, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are in an “or” relationship.
  • At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • At least one of A, B, and C includes A, B, C, AB, AC, BC, or ABC.
  • the ordinal numbers such as “first” and “second” mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the order, timing, priority or importance of multiple objects. degree.
  • This application can be applied to long term evolution (LTE) systems, new radio (new radio, NR) systems, or other communication systems.
  • the communication system includes network equipment and terminal equipment, and the network equipment serves as a configuration
  • the information sending entity, the terminal device serves as the configuration information receiving entity.
  • there is an entity in the communication system that sends configuration information to another entity, sends data to another entity, or receives data sent by another entity; another entity receives configuration information and sends configuration information to another entity based on the configuration information.
  • the entity sends data, or receives configuration information to send data sent by the entity.
  • this application can be applied to terminal equipment in a connected state or an active state (ACTIVE), and can also be applied to a terminal equipment in a non-connected state (INACTIVE) or an idle state (IDLE).
  • ACTIVE active state
  • IACTIVE non-connected state
  • IDLE idle state
  • Figure 1 is a schematic diagram of the communication system in this application.
  • the six terminal devices are terminal device 1, terminal device 2, terminal device 3, terminal device 4, terminal device 5, terminal device 6, etc. respectively.
  • terminal device 1 is a smart teacup
  • terminal device 2 is a smart air conditioner
  • terminal device 3 is a smart gas dispenser
  • terminal device 4 is a vehicle
  • terminal device 5 is a mobile phone
  • terminal device Note 6 is an example for a printer.
  • the transmitting end can be a network device or a terminal device
  • the receiving end can be a network device or a terminal device.
  • the sending end (or called the transmitting end, the transmitting end device) can be a network device
  • the receiving end (or called the receiving end, the receiving end device) can be the terminal device (for example, Figure 1 Terminal equipment 1-terminal equipment 6) in Terminal Equipment.
  • the signal sent by the transmitting end to carry data needs to be modulated, and the signal received by the corresponding receiving end is a modulated signal. Accordingly, after receiving a signal, the receiving end usually needs to demodulate the received signal to obtain the data carried by the signal.
  • multiple antennas are configured at both the transmitter and receiver in the MIMO system, which can significantly improve spectrum efficiency.
  • This technology is widely used in 4G mobile communication systems.
  • massive multiple input multiple output (mMIMO) technology further significantly increases the number of antennas, especially the number of antennas at the transmitter end, usually with at least 64 transceiver channels (64Transmit and 64Receive, 64TRX) in the mid-band.
  • the number of antennas supported is also larger (for example, up to 192).
  • 5G services the commercial use of mMIMO has achieved great success.
  • the antenna size of the base station is larger, while the antenna size of the terminal equipment is usually limited.
  • the number of terminal antennas is often small, and the mainstream configuration is 2 antennas or 4 antennas. antenna.
  • the spectrum efficiency gain of network equipment configured with large-scale antennas is not much greater than that of ordinary antennas.
  • the base station is equipped with large-scale antennas and can resist multi-user interference through spatial multi-antenna processing, thus supporting simultaneous transmission by a large number of users. Therefore, mmIMO technology is an effective technology for improving multi-user capacity.
  • network equipment can use multi-user linear precoding technology to combat multi-user interference.
  • multi-user MIMO is an example.
  • Network equipment uses zero forcing beamforming (ZFBF) to communicate.
  • ZFBF is also It is called zero-forcing precoding. That is, during the communication process with multiple terminal devices (or multiple users), the network device selects the precoding matrix (and indicates the selected precoding matrix to the target user), so that other terminal devices among the multiple terminal devices The interference of the terminal device to the target terminal device (or target user) is zero, thus effectively combating multi-user interference.
  • ZFBF zero forcing beamforming
  • the network device is the sending end and the terminal device is the receiving end.
  • the network device can send demodulation information to the target terminal device, so that the target terminal device can demodulate the received data based on the demodulation information.
  • the demodulation information sent by the network device to the target terminal device does not need to be associated with the precoding matrix of other terminal devices, but only The required indication of the precoding information of the target terminal device can enable the target terminal device to correctly demodulate the data.
  • the sender sends less information to the receiver to achieve communication.
  • the less information is generally carried in a demodulation reference signal, which allows the receiving end to perform the signal demodulation process based on only one demodulation reference signal.
  • the transmitter and the receiver can communicate based on wide linear precoding.
  • wide linear precoding can realize the transformation from regular Gaussian signaling to non-regular Gaussian signaling, so that the signal transmission no longer requires the I-channel signal and the Q-channel signal to be independently and identically distributed, thus introducing more signal degrees of freedom to achieve multi-faceted countermeasures.
  • the base station can send modulated signals to multiple users at the same time, such as quadrature amplitude modulation (quadrature amplitude modulation, QAM) signals.
  • QAM quadrature amplitude modulation
  • the base station determines serial-to-parallel conversion (S/P) processing to obtain the data of k users.
  • S/P serial-to-parallel conversion
  • the base station may send one or more data streams, each of which is a QAM signal.
  • the data of the k users include User 1's data (User 1's data), denoted b 1 , User 2's data (User 2's data), denoted b 2 ... User k's data (User k's data). Denote it as b k .
  • b k User k's data
  • m k represents the number of layers (or number of streams) of data b k .
  • the base station performs wide linear precoding (WLP) on each user's data, that is, performs linear processing on the sum of each user's data and the conjugate of the data.
  • WLP wide linear precoding
  • the precoding matrices involved in WLP include T 1,k and T 2,k , and the signal processed by WLP satisfies:
  • x k represents the signal after WLP processing, is the conjugate of b k .
  • the matrix dimension of x k is M*1.
  • the number of antennas of the base station is M (M is greater than or equal to 1).
  • M is 1, it represents single antenna or single channel transmission.
  • the number m k of data streams sent by the base station is less than or equal to the number M of antennas of the base station.
  • the base station aliases the wide linear precoded data of multiple users and sends it on multiple antennas.
  • x k corresponding to user k's data b k is still used as an example.
  • x k can be sent on M antenna ports of the base station.
  • the user receives signals from multiple users on multiple antennas after passing through the channel.
  • the user performs multi-user detection using widely linear estimation (WLE), that is, linear processing is performed on the signal received by the user and the conjugate of the signal, thereby recovering the user's data stream.
  • WLE widely linear estimation
  • x k corresponding to user k's data b k
  • user k is at the corresponding antenna port (for example, the k-th user's antenna "1,...N k ", The data received on N k is greater than or equal to 2) is y k .
  • user k determines the estimate of data b k based on y k based on the WLE process, denoted as
  • the receiving end needs to process the interference accordingly, that is, the receiving end needs to process the interference through the demodulation information R 1,k and R 2,k used in the WLE process (such as the kth receiving end in the WLE process using Determine the estimate of the first data of the k-th receiving end in a manner, as implemented in the manner of equation (16) below).
  • the receiving end since the receiving end does not obtain the demodulation information corresponding to its own precoding information, the receiving end is unable to eliminate interference.
  • the above-mentioned signal demodulation process through a demodulation reference signal cannot enable the user to obtain interference information, resulting in poor demodulation performance at the receiving end, which is likely to cause demodulation failure at the receiving end.
  • Figure 2 is a schematic diagram of the communication method provided by this application. The method includes the following steps.
  • the sending end sends the first data.
  • the sending end sends the first data in step S201, and correspondingly, the receiving end receives the first data in step S201.
  • the sending end involved in this application may be a network device or a terminal device, and the receiving end may also be a network device or a terminal device.
  • the first data received by the receiving end in step S201 is carried on a first signal, and the first signal is obtained based on the first data and the conjugate of the first data.
  • the first signal is obtained based on wide linear transformation of the first data, so that the first signal received by the receiving end supports the scenario of wide linear precoding.
  • the first data includes a real part and an imaginary part
  • the conjugate of the first data also includes a real part and an imaginary part.
  • the real part of the first data is the same as the real part of the conjugate of the first data
  • the imaginary part of the first data and the imaginary part of the conjugate of the first data are opposite numbers of each other.
  • the first signal is obtained by a wide linear transformation based on the first data. It can also be stated that the first signal is obtained by a linear transformation based on the first data and the conjugate linear transformation of the first data.
  • x represents the first signal
  • b represents the first data
  • b * represents the conjugate of the first data
  • T 1 represents the precoding matrix of the first data
  • T 2 represents the conjugate of the first data. precoding matrix.
  • this embodiment can be applied to a MU-MIMO system.
  • An implementation example of the MU-MIMO system is shown in Figure 3 .
  • Figure 3 take the number of antenna ports (or the number of transmitting channels) of the transmitting end as M, the number of receiving ends as k, and the number of first data streams of the kth receiving end as m k .
  • M and m k are both An integer greater than or equal to 1, and m k is less than or equal to M.
  • the first signal sent by the sending end in step S201 to carry the first data satisfies:
  • x k represents the first signal of the k-th receiving end
  • b k represents the first data of the k-th receiving end
  • T 1,k represents the precoding matrix of the first data of the k-th receiving end
  • T 2,k represents the conjugate precoding of the first data of the k-th receiving end. matrix.
  • the sending end can also implement a process similar to Equation (1).
  • the first data received by the receiving end in step S201 satisfies the non-regular Gaussian signaling characteristics, and/or the first signal used to carry the first data satisfies the non-regular Gaussian signaling characteristics. .
  • the signal (including the first data and/or the first signal) received by the receiving end satisfies the non-regular Gaussian signaling characteristics, that is, the signal received by the receiving end no longer requires I-channel signals and Q-channel signals (i.e., in-phase (In-phase) signal and quadrature (quadrature) signal) are independently and identically distributed (that is, when the receiving end detects the signal, the two detected I-channel signals and Q-channel signals variables are independent of each other and obey the same statistical distribution), or the pseudo-covariance matrix of the signal received at the receiving end is not zero. Therefore, introducing more signal degrees of freedom can achieve an optimized design to combat multi-user interference and match spatial channels, so that the above technical solution can be applied to multi-user multiple input and multiple output (MU-MIMO) systems.
  • MU-MIMO multi-user multiple input and multiple output
  • E(.) means seeking expectations, represents the transpose of x k
  • x k represents the first data of the k-th receiving end
  • x k,1 , x k,2 ...x k,M respectively represents the first data of the k-th receiving end on M antenna ports mapped data.
  • x k is non-regular Gaussian signaling, such as a 4-layer BPSK modulated signal
  • the I and Q paths do not satisfy the same distribution
  • x k is a regular Gaussian signaling, such as a 4-layer QPSK modulated signal
  • the I and Q paths satisfy the same distribution, and satisfy
  • the transmitting end sends the first demodulation reference signal and the second demodulation reference signal.
  • the transmitting end sends the first demodulation reference signal and the second demodulation reference signal in step S202.
  • the receiving end receives the first demodulation reference signal and the second demodulation reference signal in step S202. .
  • the number of layers of the first data received by the receiving end in step S201 is m, and m is a natural number greater than or equal to 1; wherein, the first demodulation reference received by the receiving end in step S202
  • the number of ports between the signal and the second demodulation reference signal is m.
  • the number of layers of the first data, the number of ports of the first demodulation reference signal, and the number of ports of the second demodulation reference signal are all m.
  • the number of layers of the first data, the number of ports of the first demodulation reference signal and the number of ports of the second demodulation reference signal are all the same, which facilitates the receiving end to decode the data of the same layer based on the demodulation reference signal with the same number of ports. to improve the success rate of data demodulation.
  • the number of layers of first data may also be referred to as the number of streams of first data.
  • the number of ports of the first demodulation reference signal is less than m, and/or the number of ports of the second demodulation reference signal is less than m.
  • the receiving end demodulates the first data based on the first demodulation reference signal and the second demodulation reference signal.
  • the receiving end uses the first demodulation reference signal and the second demodulation reference signal in step S203. Demodulate the first data.
  • the first demodulation reference signal received by the receiving end in step S202 carries the first demodulation information
  • the second demodulation reference signal received by the receiving end in step S202 carries the second demodulation information.
  • the first demodulation information and the second demodulation information are used to obtain an estimate of the first data.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end are respectively used to carry different demodulation information, so that the receiving end can demodulate the first data based on the different demodulation information. , to obtain an estimate of this first data.
  • demodulation information (such as first demodulation information or second demodulation information) can be expressed as a demodulation matrix, a detection matrix, demodulation matrix information, etc.
  • the estimation of the first data refers to the data that is received by the receiving device and recovered locally after the first data sent by the sending end is transmitted through the channel.
  • the receiving end determines the estimate of the first data as the first data sent by the sending end in order to obtain the information carried by the first data.
  • the estimate of the first data obtained by the receiving end may not be completely equivalent to the first data sent by the transmitting end.
  • the first demodulation reference signal received by the receiving end in step S202 is obtained by precoding based on a first precoding matrix, and the first precoding matrix is associated with the first demodulation information;
  • the second demodulation reference signal received by the receiving end in step S202 is precoded based on a second precoding matrix, and the second precoding matrix is associated with the second demodulation information.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end are respectively precoded by different precoding matrices, so that the receiving end determines the associated demodulation information based on the different precoding matrices. .
  • the receiving end when the receiving end does not need to demodulate the demodulation reference signals of other users (or users corresponding to other receiving ends), the receiving end bases the received first demodulation reference signal and the second Demodulating the reference signal can realize demodulation of the received first data, which can reduce the detection complexity of the receiving end.
  • the first precoding matrix associated with the first demodulation information includes:
  • F 1 represents the first precoding matrix
  • H + is the inverse matrix or generalized inverse matrix of H
  • the H represents the channel information of the channel between the transmitting end and the receiving end, is the conjugate transpose of R 1 , where R 1 represents the first demodulation information
  • the second precoding matrix associated with the second demodulation information includes:
  • F 2 represents the second precoding matrix
  • R 2 which represents the second demodulation information
  • the first precoding matrix is not equal to the precoding matrix of the first data
  • the second precoding matrix is not equal to the conjugate precoding matrix of the first data. matrix.
  • the first demodulation information and the second demodulation information required by the receiving end for multi-user detection are not only related to the precoding matrix of the receiving end's data (for example, the first data), but also related to the precoding matrix of the receiving end's data (for example, the first data).
  • the precoding matrices of data of other receiving ends (or users corresponding to other receiving ends) other than the receiving end are related.
  • the first precoding matrix used to precode the first demodulation information is not equal to the precoding matrix used to precode the first data, and/or the first precoding matrix used to precode the second demodulation information.
  • the processed second precoding matrix is not identical to the precoding matrix used to precode the conjugate of the first data, so that the solution can be applied to the data transmission process in the MU-MIMO system.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end in step S202 are used to demodulate the first data received by the receiving end in step S201, so that the receiving end in step S201 After receiving the first data in S201, the receiving end demodulates the first data based on the first demodulation reference signal and the second demodulation reference signal in step S202.
  • the receiving end obtains demodulation information by receiving the first demodulation reference signal and the second demodulation reference signal, and performs demodulation of the received data based on the demodulation information.
  • the first data is demodulated to implement the signal demodulation process at the receiving end.
  • the first demodulation reference signal and the second demodulation reference signal received by the receiving end can carry more More demodulation information enables the receiving end to demodulate the received data based on more demodulation information to improve demodulation performance.
  • the scenario involved in Figure 3 is still used as an example here.
  • the first demodulation reference signal and the second demodulation reference signal sent by the transmitting end to the kth receiving end in step S202 can be transmitted through Figure 4
  • the implementation shown, that is, the first demodulation reference signal is denoted as the demodulation reference signal in Figure 4
  • the second demodulation reference signal is denoted as the demodulation reference signal in Figure 4
  • the first demodulation reference signal the number of ports and The number of ports are all equal, and the values are all m k as an example.
  • the channel information of the wireless channel between the sending end and the kth receiving end is recorded as H k
  • the signal y k received by the k- th receiving end (in the figure, the antenna of the k-th receiving end includes antenna 1, antenna 2...antenna N k as an example) can be expressed as:
  • T 1,i and T 2,i respectively represent the precoding matrix sum of the data of the i-th (i is an integer and i ranges from 1 to k) receiving ends.
  • the conjugate precoding matrix of the i-th receiving end data, n k is a matrix of N k *1 and n k represents complex Gaussian noise, that is, the mean of n k is 0 and the variance is Represents the Gaussian noise variance.
  • step S203 the k-th receiving end can obtain the estimate of b k through wide linear estimation (that is, linear transformation of the received signal y k and the conjugate of y k ). satisfy:
  • R 1,k represents the first demodulation information
  • R 2,k represents the second demodulation information
  • R 1,k and R 2,k are both matrices of m k *N k
  • y k represents the kth
  • the sending end can realize the determination process of R 1,k and R 2,k through the following processes (5) to (13).
  • R 1,k and R 2,k can be obtained through the minimum mean square error algorithm.
  • E k of the kth receiving end can be expressed as
  • E ⁇ represents the expectation
  • () H represents the conjugate transpose
  • b k represents the first data of the k-th receiving end
  • R 1,k and R 2,k satisfy:
  • R 1,k represents the first demodulation information
  • R 2,k represents the second demodulation information
  • R 1,k and R 2,k are both matrices of m k *N k
  • H k is N k *
  • the matrix of M represents the channel information of the wireless channel between the sending end and the k-th receiving end, is the conjugate of H k .
  • Equation (6.1) Equation (6.1)
  • Equation (6.2) Equation (6.2)
  • Equation (7) Equations (11). That middle, Expressed as The inverse matrix of for The conjugate of , and C yk is the covariance matrix of the received signal y k , which can be expressed as:
  • E(.) represents the expectation
  • y k represents the received signal of the k-th receiving end
  • H k is a matrix of N k *M representing the channel information of the wireless channel between the transmitting end and the k-th receiving end.
  • is the conjugate of H k represents the Gaussian noise variance
  • I is the identity matrix.
  • R 1,k and R 2,k must simultaneously consider the precoding matrices of the k-th receiving end and the interfering user (ie, the other receiving ends among the k receiving ends except the k-th receiving end).
  • the transmitting end configures the demodulation reference signal for the kth receiving end respectively. and demodulation reference signal
  • the number of ports is the same as the number of streams of data b k , and data b k adopts wide linear precoding, as shown in Equation (1).
  • data b k and demodulation reference signal Transmit on different time-frequency resources and demodulate reference signals It can be sent on different time-frequency resources, or code division multiplexing can be used.
  • the precoding matrix is satisfy:
  • H k is a matrix of N k *M representing the channel information of the wireless channel between the transmitting end and the kth receiving end
  • H k also known as the Moore-Penrose generalized inverse matrix
  • the precoding matrix is satisfy:
  • H k is a matrix of N k *M representing the channel information of the wireless channel between the transmitting end and the kth receiving end
  • H k also known as the Moore-Penrose generalized inverse matrix
  • the R 1,k and R 2,k required by user k to perform multi-user required detection are not only related to the wide linear precoding matrices T 1,k and T 2,k of this user, but also are scheduled at the same time.
  • the wide linear precoding matrices of other users are related.
  • demodulating the reference signal and demodulation reference signal Independent linear precoding is adopted respectively, and its precoding matrices respectively carry the R 1,k and R 2,k information required for wide linear estimation, which allows the receiving end to only demodulate its own demodulation reference signal without demodulating the signals of other receiving ends.
  • the detection matrix information required for wide linear estimation can be obtained, which reduces the detection complexity at the receiving end.
  • the receiving end can realize the determination process of R 1,k and R 2,k through the processes of the following equations (14) to (16).
  • the kth receiving end receives the first demodulation reference signal (denoted as demodulation reference signal ) and the second demodulation reference signal (denoted as demodulation reference signal ), the kth receiving end can demodulate the reference signal based on and Obtain R 1,k and R 2,k required for wide linear estimation respectively.
  • the signal received by the kth receiving end It can be expressed as:
  • the k-th receiving end can obtain an estimate of R 1,k :
  • R 2,k Similar to the process of obtaining R 1,k , user k can obtain an estimate of R 2,k , which satisfies:
  • the k-th receiving end After the k-th receiving end obtains R 1,k and R 2,k required for wide linear estimation, the k-th receiving end performs wide linear estimation on the data signal y k received in step S201 to obtain the transmitted data. flow estimate
  • the R 1,k and R 2,k required by the k-th receiving end for multi-user detection are both related to the wide linear precoding matrices T 1,k and T 2,k of this receiving end, Correlated, and related to the wide linear precoding matrices of other receivers that are scheduled at the same time.
  • its precoding matrices respectively carry the R 1,k and R 2,k information required for wide linear estimation, which allows the k-th receiving end to only demodulate its own demodulation reference signal without demodulation.
  • the detection matrix information required for wide linear estimation can be obtained, which reduces the user's detection complexity.
  • an embodiment of the present application provides a communication device.
  • the communication device 500 can realize the functions of the terminal device in the above method embodiment, and therefore can also realize the beneficial effects of the above method embodiment.
  • the processing unit 501 and the transceiver unit 502 included in the communication device 500 are used to perform the following implementation process.
  • the transceiver unit 501 is used to receive the first data
  • the transceiver unit 501 is also configured to receive a first demodulation reference signal and a second demodulation reference signal, and the first demodulation reference signal and the second demodulation reference signal are used to demodulate the first data;
  • the processing unit 502 is configured to demodulate the first data based on the first demodulation reference signal and the second demodulation reference signal.
  • the first data is carried on a first signal, and the first signal is obtained based on the first data and the conjugate of the first data.
  • x represents the first signal
  • b represents the first data
  • b * represents the conjugate of the first data
  • T 1 represents the precoding matrix of the first data
  • T 2 represents the conjugate of the first data. precoding matrix.
  • the number of layers of the first data is m, and m is a natural number greater than or equal to 1;
  • the number of ports of the first demodulation reference signal and the second demodulation reference signal is m.
  • the first data satisfies the non-regular Gaussian signaling characteristics, and/or the first signal satisfies the non-regular Gaussian signaling characteristics.
  • the first demodulation reference signal carries first demodulation information
  • the second demodulation reference signal carries second demodulation information
  • the first demodulation information and the second demodulation information are used to obtain the first data estimate.
  • the first demodulation reference signal is obtained by precoding based on a first precoding matrix, and the first precoding matrix is associated with the first demodulation information;
  • the second demodulation reference signal is obtained by precoding based on a second precoding matrix, and the second precoding matrix is associated with the second demodulation information.
  • the first precoding matrix associated with the first demodulation information includes:
  • F 1 represents the first precoding matrix
  • H + is the inverse matrix or generalized inverse matrix of H
  • the H represents the channel information of the channel between the transmitting end and the receiving end, is the conjugate transpose of R 1 , where R 1 represents the first demodulation information
  • the second precoding matrix associated with the second demodulation information includes:
  • F 2 represents the second precoding matrix
  • R 2 which represents the second demodulation information
  • the first precoding matrix is not equal to the precoding matrix of the first data, and/or the second precoding matrix is not equal to the conjugate precoding matrix of the first data.
  • an embodiment of the present application provides a communication device.
  • the communication device 600 can realize the functions of the network device in the above method embodiment, and therefore can also achieve the beneficial effects of the above method embodiment.
  • the processing unit 602 and the transceiver unit 601 included in the communication device 600 are used to perform the following implementation process.
  • the processing unit 602 is used to generate first data
  • the transceiver unit 601 is used to send first data
  • the processing unit 602 is also used for a first demodulation reference signal and a second demodulation reference signal, and the first demodulation reference signal and the second demodulation reference signal are used to demodulate the first data;
  • the transceiver unit 601 is also used to send the first demodulation reference signal and the second demodulation reference signal.
  • the first data is carried on a first signal, and the first signal is obtained based on the first data and the conjugate of the first data.
  • x represents the first signal
  • b represents the first data
  • b * represents the conjugate of the first data
  • T 1 represents the precoding matrix of the first data
  • T 2 represents the conjugate of the first data. precoding matrix.
  • the number of layers of the first data is m, and m is a natural number greater than or equal to 1;
  • the number of ports of the first demodulation reference signal and the second demodulation reference signal is m.
  • the first data satisfies the non-regular Gaussian signaling characteristics, and/or the first signal satisfies the non-regular Gaussian signaling characteristics.
  • the first demodulation reference signal carries first demodulation information
  • the second demodulation reference signal carries second demodulation information
  • the first demodulation information and the second demodulation information are used to obtain the first data estimate.
  • the first demodulation reference signal is obtained by precoding based on a first precoding matrix, and the first precoding matrix is associated with the first demodulation information;
  • the second demodulation reference signal is obtained by precoding based on a second precoding matrix, and the second precoding matrix is associated with the second demodulation information.
  • the first precoding matrix associated with the first demodulation information includes:
  • F 1 represents the first precoding matrix
  • H + is the inverse matrix or generalized inverse matrix of H
  • the H represents the channel information of the channel between the transmitting end and the receiving end, is the conjugate transpose of R 1 , where R 1 represents the first demodulation information
  • the second precoding matrix associated with the second demodulation information includes:
  • F 2 represents the second precoding matrix
  • R 2 which represents the second demodulation information
  • the first precoding matrix is not equal to the precoding matrix of the first data, and/or the second precoding matrix is not equal to the conjugate precoding matrix of the first data.
  • FIG. 7 is a communication device involved in the above embodiment provided for an embodiment of the present application.
  • the communication device may specifically be the terminal device in the above embodiment.
  • a possible logical structure of the communication device 700 is Schematic diagram, the communication device 700 may include but is not limited to at least one processor 701 and a communication port 702. Further optionally, the device may also include at least one of a memory 703 and a bus 704. In the embodiment of the present application, the at least one processor 701 is used to control the actions of the communication device 700.
  • the processor 701 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with this disclosure.
  • the processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on.
  • the communication device shown in Figure 7 can be used to implement other steps implemented by the terminal equipment in the corresponding method embodiments, and to achieve the corresponding technical effects of the terminal equipment.
  • the specific implementation of the communication device shown in Figure 7 is, Reference may be made to the descriptions in the foregoing method embodiments, and details will not be repeated here.
  • FIG. 8 is a schematic structural diagram of a communication device involved in the above embodiment provided for an embodiment of the present application.
  • the communication device may specifically be the network device in the above embodiment.
  • the structure of the communication device may refer to FIG. The structure shown in 8.
  • the communication device includes at least one processor 811 and at least one network interface 814. Further optionally, the communication device further includes at least one memory 812, at least one transceiver 813 and one or more antennas 815.
  • the processor 811, the memory 812, the transceiver 813 and the network interface 814 are connected, for example, through a bus. In the embodiment of the present application, the connection may include various interfaces, transmission lines or buses, etc., which is not limited in this embodiment.
  • Antenna 815 is connected to transceiver 813.
  • the network interface 814 is used to enable the communication device to communicate with other communication devices through communication links.
  • the network interface 814 may include a network interface between a communication device and a core network device, such as an S1 interface, and the network interface may include a network interface between a communication device and other communication devices (such as other network devices or core network devices), such as an X2 Or Xn interface.
  • a network interface between a communication device and a core network device such as an S1 interface
  • the network interface may include a network interface between a communication device and other communication devices (such as other network devices or core network devices), such as an X2 Or Xn interface.
  • the processor 811 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs, for example, to support the communication device to perform actions described in the embodiments.
  • the communication device may include a baseband processor and a central processing unit.
  • the baseband processor is mainly used to implement communication protocols and Communication data is processed.
  • the central processor is mainly used to control the entire terminal device, execute software programs, and process data of software programs.
  • the processor 811 in Figure 8 can integrate the functions of the baseband processor and the central processor. Those skilled in the art can understand that the baseband processor and the central processor can also be independent processors, interconnected through technologies such as buses.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and various components of the terminal device may be connected through various buses.
  • the baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip.
  • the central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing communication protocols and communication data can be built into the processor, or can be stored in the memory in the form of a software program, and the processor executes the software program to implement the baseband processing function.
  • Memory is mainly used to store software programs and data.
  • the memory 812 may exist independently and be connected to the processor 811.
  • the memory 812 can be integrated with the processor 811, for example, integrated into a chip.
  • the memory 812 can store the program code for executing the technical solution of the embodiment of the present application, and the execution is controlled by the processor 811.
  • the various computer program codes executed can also be regarded as the driver of the processor 811.
  • Figure 8 shows only one memory and one processor. In an actual terminal device, there may be multiple processors and multiple memories. Memory can also be called storage media or storage devices.
  • the memory may be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, which is not limited in the embodiments of the present application.
  • the transceiver 813 may be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and the transceiver 813 may be connected to the antenna 815.
  • Transceiver 813 includes a transmitter Tx and a receiver Rx.
  • one or more antennas 815 can receive radio frequency signals
  • the receiver Rx of the transceiver 813 is used to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and convert the digital baseband signals into digital baseband signals.
  • the signal or digital intermediate frequency signal is provided to the processor 811, so that the processor 811 performs further processing on the digital baseband signal or digital intermediate frequency signal, such as demodulation processing and decoding processing.
  • the transmitter Tx in the transceiver 813 is also used to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 811, and convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and pass it through a One or more antennas 815 transmit the radio frequency signal.
  • the receiver Rx can selectively perform one or more levels of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal.
  • the sequence of the down-mixing processing and the analog-to-digital conversion processing is The order is adjustable.
  • the transmitter Tx can selectively perform one or more levels of upmixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a radio frequency signal.
  • the upmixing processing and digital-to-analog conversion processing are The order is adjustable.
  • Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals.
  • a transceiver may also be called a transceiver unit, a transceiver, a transceiver device, etc.
  • the devices used to implement the receiving function in the transceiver unit can be regarded as the receiving unit
  • the devices used in the transceiver unit used to implement the transmitting function can be regarded as the transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit, and the receiving unit also It can be called a receiver, input port, receiving circuit, etc.
  • the sending unit can be called a transmitter, transmitter, or transmitting circuit, etc.
  • the communication device shown in Figure 8 can be used to implement the steps implemented by the network equipment in the foregoing method embodiments and to achieve the technical effects corresponding to the network equipment.
  • the specific implementation methods of the communication device shown in Figure 8 can be Refer to the descriptions in the foregoing method embodiments, which will not be described again one by one here.
  • Embodiments of the present application also provide a computer-readable storage medium.
  • the computer-readable storage medium is used to store one or more computer-executable instructions.
  • the processor executes as in the previous embodiments.
  • the method described in the possible implementation of the communication device (when implemented through a terminal device).
  • Embodiments of the present application also provide a computer-readable storage medium.
  • the computer-readable storage medium is used to store one or more computer-executable instructions.
  • the processor executes as in the previous embodiments. The method described in the possible implementation of the communication device (when implemented through network equipment).
  • Embodiments of the present application also provide a computer program product (or computer program).
  • the processor executes the possible implementation method of the above communication device (when implemented through a terminal device).
  • Embodiments of the present application also provide a computer program product (or computer program).
  • the processor executes the possible implementation method of the above communication device (when implemented through a network device).
  • Embodiments of the present application also provide a chip system, which includes at least one processor and is used to support a terminal device to implement the functions involved in the possible implementation of the above communication device (when implemented through a terminal device).
  • the chip system further includes an interface circuit that provides program instructions and/or data to the at least one processor.
  • the chip system may also include a memory, which is used to store necessary program instructions and data for the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • Embodiments of the present application also provide a chip system, which includes at least one processor and is used to support a network device to implement the functions involved in the possible implementation of the above communication device (when implemented through a network device).
  • the chip system further includes an interface circuit that provides program instructions and/or data to the at least one processor.
  • the chip system may also include a memory, which is used to store necessary program instructions and data for the network device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network device may specifically be the network device in the aforementioned method embodiment.
  • An embodiment of the present application also provides a communication system.
  • the network system architecture includes the communication device (including the sending end and the receiving end) in any of the above embodiments.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device 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 or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the above integrated units are both It can be implemented in the form of hardware or in the form of software functional units. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code. .

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Abstract

本申请提供了一种通信方法及通信装置，用于实现接收端的信号解调过程的同时，提升接收端的解调性能。在该方法中，接收端接收第一数据；该接收端接收第一解调参考信号和第二解调参考信号，该第一解调参考信号和该第二解调参考信号用于解调该第一数据；该接收端基于该第一解调参考信号和该第二解调参考信号解调该第一数据。换言之，接收端在对第一数据进行解调的过程中，该接收端通过接收第一解调参考信号和第二解调参考信号以获取解调信息，并基于该解调信息对所接收的第一数据进行解调，以实现接收端的信号解调过程。

Description

一种通信方法及设备
本申请要求于2022年06月15日提交中国国家知识产权局，申请号为202210676242.7，发明名称为“一种通信方法及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线技术领域，尤其涉及一种通信方法及设备。
背景技术
在无线通信系统中，发送端所发送的用于承载数据的信号需要经过调制处理，相应的接收端所接收的信号为经过调制处理后的信号。相应的，接收端在接收信号之后，通常需要对所接收的信号进行解调，以得到该信号所携带的数据。
然而，对于接收端而言，如何实现信号解调过程并提升解调性能，是一个亟待解决的技术问题。
发明内容
本申请提供了一种通信方法及通信装置，用于实现接收端的信号解调过程的同时，提升接收端的解调性能。
本申请第一方面提供了一种通信方法，该方法由接收端执行，或者，该方法由接收端中的部分组件(例如处理器、芯片或芯片系统等)执行，或者该方法还可以由能实现全部或部分接收端功能的逻辑模块或软件实现。在第一方面及其可能的实现方式中，以该通信方法由接收端执行为例进行描述。在该方法中，接收端接收第一数据；该接收端接收第一解调参考信号和第二解调参考信号，该第一解调参考信号和该第二解调参考信号用于解调该第一数据；该接收端基于该第一解调参考信号和该第二解调参考信号解调该第一数据。
基于上述技术方案，接收端所接收的第一解调参考信号和该第二解调参考信号用于解调该第一数据，使得该接收端在接收第一数据之后，该接收端基于该第一解调参考信号和该第二解调参考信号解调该第一数据。换言之，接收端在对第一数据进行解调的过程中，该接收端通过接收第一解调参考信号和第二解调参考信号以获取解调信息，并基于该解调信息对所接收的第一数据进行解调，以实现接收端的信号解调过程。
此外，相比于接收端仅基于一个解调参考信号执行信号解调过程的实现方式，在上述技术方案中，接收端所接收的第一解调参考信号和第二解调参考信号能够承载更多的解调信息，使得该接收端能够基于更多的解调信息对所接收的数据进行解调，以提升解调性能。
需要说明的是，本申请涉及的接收端可以为网络设备或终端设备。
可选地，本申请中，解调信息可以表述为解调矩阵，检测矩阵，解调矩阵信息等。
在第一方面的一种可能的实现方式中，该第一数据承载于第一信号，该第一信号基于该第一数据以及该第一数据的共轭获得。
基于上述技术方案，接收端所接收的第一数据承载于第一信号，且该第一信号基于该 第一数据以及该第一数据的共轭获得。换言之，第一信号为基于第一数据的宽线性变换得到，使得接收端所接收的第一信号支持宽线性预编码的场景。
应理解，第一数据包括实部和虚部，第一数据的共轭也包括实部和虚部。其中，第一数据的实部与第一数据的共轭的实部相同，且第一数据的虚部与第一数据的共轭的虚部互为相反数。
此外，本申请中，第一信号为基于第一数据的宽线性变换得到，也可以表述为第一信号为基于第一数据的线性变换以及第一数据的共轭的线性变换得到。
在第一方面的一种可能的实现方式中，该第一信号满足：
x＝T1b+T2b*；
其中，x表示该第一信号，b表示该第一数据，b*表示该第一数据的共轭，T1表示该第一数据的预编码矩阵，T2表示该第一数据的共轭的预编码矩阵。
可选地，第一信号还可以有其他的实现方式，例如，第一信号满足：
其中，τ和θ为衡量x的两个参数，分别代表非圆系数和旋转角，e为自然常数，j取值为
在第一方面的一种可能的实现方式中，该第一数据的层数为m，m为大于或等于1的自然数；其中，该第一解调参考信号和该第二解调参考信号的端口数为m。
基于上述技术方案，第一数据的层数，该第一解调参考信号的端口数和该第二解调参考信号的端口数均为m。即第一数据的层数，第一解调参考信号的端口数和第二解调参考信号的端口数均相同，便于接收端基于同一端口数的解调参考信号对同一层数的数据进行解调，以提升数据解调的成功率。
本申请中，第一数据的层数也可以称为第一数据的流数。
可选地，该第一解调参考信号的端口数小于m，和/或，该第二解调参考信号的端口数小于m。比如第一数据层数为2，第一解调参考信号端口数为1，在这种情况下，即假设1端口的解调参考信号对应于携带了2层的第一数据，对发送端预编码矩阵隐含进行了约束，比如对两层数据采用相同的预编码，该实现方式能够降低参考信号的开销。
在第一方面的一种可能的实现方式中，该第一数据满足非正则高斯信令特征，和/或，该第一信号满足非正则高斯信令特征。
基于上述技术方案，接收端所接收的信号(包括第一数据和/或第一信号)满足非正则高斯信令特征，即接收端所接收的信号不再要求I路信号和Q路信号(即同相位(In-phase)信号和正交(quadrature)信号)独立同分布，或者，接收端所接收的信号的伪协方差矩阵不为零。从而，引入更多的信号自由度可以取得对抗多用户干扰和匹配空间信道的优化设计，使得上述技术方案能够应用于多用户多输入多输出(multi user multiple input and multiple output，MU-MIMO)系统。
在第一方面的一种可能的实现方式中，该第一解调参考信号承载第一解调信息，该第二解调参考信号承载第二解调信息，且该第一解调信息和该第二解调信息用于获取该第一数据的估计。
基于上述技术方案，接收端所接收的第一解调参考信号和第二解调参考信号分别用于 承载不同的解调信息，使得该接收端能够基于该不同的解调信息对第一数据进行解调，以获取该第一数据的估计。
应理解，第一数据的估计指的是发送端发送的第一数据经过信道传输之后，被接收设备接收并在本地进行恢复的数据。换言之，接收端将该第一数据的估计确定为发送端所发送的第一数据，以期得到第一数据所承载的信息。此外，由于无线通信系统中不可避免的信号干扰以及信号衰减等因素，有可能导致接收端所获得的第一数据的估计与发送端所发送的第一数据并不完全等同。
在第一方面的一种可能的实现方式中，该第一解调参考信号为基于第一预编码矩阵进行预编码得到，该第一预编码矩阵关联于该第一解调信息；该第二解调参考信号为基于第二预编码矩阵进行预编码得到，该第二预编码矩阵关联于该第二解调信息。
基于上述技术方案，接收端所接收的第一解调参考信号和第二解调参考信号分别通过不同预编码矩阵进行预编码得到，使得该接收端基于该不同的预编码矩阵确定所关联的解调信息。
此外，在MU-MIMO系统中，接收端无需解调其它用户(或者其它接收端对应的用户)的解调参考信号的情况下，该接收端基于所接收的第一解调参考信号和第二解调参考信号即可实现对所接收的第一数据的解调，能够降低该接收端的检测复杂度。
在第一方面的一种可能的实现方式中，
该第一预编码矩阵关联于该第一解调信息包括：
其中，F1表示该第一预编码矩阵，该H+为H的逆矩阵或广义逆矩阵，该H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，该R1表示该第一解调信息；
该第二预编码矩阵关联于该第二解调信息包括：
其中，F2表示该第二预编码矩阵，为R2的共轭转置，所述R2表示该第二解调信息。
在第一方面的一种可能的实现方式中，该第一预编码矩阵不等同于该第一数据的预编码矩阵，和/或，该第二预编码矩阵不等同于该第一数据的共轭的预编码矩阵。
基于上述技术方案，在MU-MIMO系统中，接收端进行多用户检测所需要的第一解调信息和第二解调信息既与该接收端的数据(例如第一数据)的预编码矩阵相关，也与该接收端之外的其他接收端(或者其它接收端对应的用户)的数据的预编码矩阵相关。使得用于对第一解调信息进行预编码处理的第一预编码矩阵不等同于对第一数据进行预编码处理的预编码矩阵，和/或，用于对第二解调信息进行预编码处理的第二预编码矩阵不等同于对第一数据的共轭进行预编码处理的预编码矩阵，以使得该方案能够应用于MU-MIMO系统中的数据传输过程。
本申请第二方面提供了一种通信方法，该方法由发送端执行，或者，该方法由发送端中的部分组件(例如处理器、芯片或芯片系统等)执行，或者该方法还可以由能实现全部或部分发送端功能的逻辑模块或软件实现。在第二方面及其可能的实现方式中，以该通信 方法由发送端执行为例进行描述。在该方法中，发送端发送第一数据；该发送端发送第一解调参考信号和第二解调参考信号，该第一解调参考信号和该第二解调参考信号用于解调该第一数据。
基于上述技术方案，发送端所发送的第一解调参考信号和该第二解调参考信号用于解调该第一数据，使得接收端在接收第一数据之后，该接收端基于该第一解调参考信号和该第二解调参考信号解调该第一数据。换言之，接收端在对第一数据进行解调的过程中，该接收端通过接收第一解调参考信号和第二解调参考信号以获取解调信息，并基于该解调信息对所接收的第一数据进行解调，以实现接收端的信号解调过程。
此外，相比于接收端仅基于一个解调参考信号执行信号解调过程的实现方式，在上述技术方案中，接收端所接收的第一解调参考信号和第二解调参考信号能够承载更多的解调信息，使得该接收端能够基于更多的解调信息对所接收的数据进行解调，以提升解调性能。
需要说明的是，本申请涉及的发送端可以为网络设备或终端设备。
在第二方面的一种可能的实现方式中，该第一数据承载于第一信号，该第一信号基于该第一数据以及该第一数据的共轭获得。
基于上述技术方案，发送端所发送的第一数据承载于第一信号，且该第一信号基于该第一数据以及该第一数据的共轭获得。换言之，第一信号为基于第一数据的宽线性变换得到，使得发送端所发送的第一信号支持宽线性预编码的场景。
应理解，第一数据包括实部和虚部，第一数据的共轭也包括实部和虚部。其中，第一数据的实部与第一数据的共轭的实部相同，且第一数据的虚部与第一数据的共轭的虚部互为相反数。
此外，本申请中，第一信号为基于第一数据的宽线性变换得到，也可以表述为第一信号为基于第一数据的线性变换以及第一数据的共轭的线性变换得到。
在第二方面的一种可能的实现方式中，该第一信号满足：
x＝T1b+T2b*；
其中，x表示该第一信号，b表示该第一数据，b*表示该第一数据的共轭，T1表示该第一数据的预编码矩阵，T2表示该第一数据的共轭的预编码矩阵。
在第二方面的一种可能的实现方式中，该第一数据的层数为m，m为大于或等于1的自然数；其中，该第一解调参考信号和该第二解调参考信号的端口数为m。
基于上述技术方案，第一数据的层数，该第一解调参考信号的端口数和该第二解调参考信号的端口数均为m。即第一数据的层数，第一解调参考信号的端口数和第二解调参考信号的端口数均相同，便于接收端基于同一端口数的解调参考信号对同一层数的数据进行解调，以提升数据解调的成功率。
本申请中，第一数据的层数也可以称为第一数据的流数。
可选地，该第一解调参考信号的端口数小于m，和/或，该第二解调参考信号的端口数小于m。
在第二方面的一种可能的实现方式中，该第一数据满足非正则高斯信令特征，和/或，该第一信号满足非正则高斯信令特征。
基于上述技术方案，接收端所接收的信号(包括第一数据和/或第一信号)满足非正则高斯信令特征，即接收端所接收的信号不再要求I路信号和Q路信号(即同相位(In-phase)信号和正交(quadrature)信号)独立同分布，或者，接收端所接收的信号的伪协方差矩阵不为零。从而，引入更多的信号自由度可以取得对抗多用户干扰和匹配空间信道的优化设计，使得上述技术方案能够应用于多用户多输入多输出(multi user multiple input and multiple output，MU-MIMO)系统。
在第二方面的一种可能的实现方式中，该第一解调参考信号承载第一解调信息，该第二解调参考信号承载第二解调信息，且该第一解调信息和该第二解调信息用于获取该第一数据的估计。
基于上述技术方案，发送端所发送的第一解调参考信号和第二解调参考信号分别用于承载不同的解调信息，使得该接收端能够基于该不同的解调信息对第一数据进行解调，以获取该第一数据的估计。
应理解，第一数据的估计指的是发送端发送的第一数据经过信道传输之后，被接收设备接收并在本地进行恢复的数据。换言之，接收端将该第一数据的估计确定为发送端所发送的第一数据，以期得到第一数据所承载的信息。此外，由于无线通信系统中不可避免的信号干扰以及信号衰减等因素，有可能导致接收端所获得的第一数据的估计与发送端所发送的第一数据并不完全等同。
在第二方面的一种可能的实现方式中，该第一解调参考信号为基于第一预编码矩阵进行预编码得到，该第一预编码矩阵关联于该第一解调信息；该第二解调参考信号为基于第二预编码矩阵进行预编码得到，该第二预编码矩阵关联于该第二解调信息。
基于上述技术方案，发送端所发送的第一解调参考信号和第二解调参考信号分别通过不同预编码矩阵进行预编码得到，使得接收端在接收第一解调参考信号和第二解调参考信号之后，该接收端基于该不同的预编码矩阵确定所关联的解调信息。
此外，在MU-MIMO系统中，接收端无需解调其它用户(或者其它接收端对应的用户)的解调参考信号的情况下，该接收端基于所接收的第一解调参考信号和第二解调参考信号即可实现对所接收的第一数据的解调，能够降低该接收端的检测复杂度。
在第二方面的一种可能的实现方式中，
该第一预编码矩阵关联于该第一解调信息包括：
其中，F1表示该第一预编码矩阵，该H+为H的逆矩阵或广义逆矩阵，该H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，该R1表示该第一解调信息；
该第二预编码矩阵关联于该第二解调信息包括：
其中，F2表示该第二预编码矩阵，为R2的共轭转置，所述R2表示该第二解调信息。
在第二方面的一种可能的实现方式中，
该第一预编码矩阵不等同于该第一数据的预编码矩阵，和/或，该第二预编码矩阵不等同于该第一数据的共轭的预编码矩阵。
基于上述技术方案，在MU-MIMO系统中，接收端进行多用户检测所需要的第一解调信息和第二解调信息既与该接收端的数据(例如第一数据)的预编码矩阵相关，也与该接收端之外的其他接收端(或者其它接收端对应的用户)的数据的预编码矩阵相关。使得用于对第一解调信息进行预编码处理的第一预编码矩阵不等同于对第一数据进行预编码处理的预编码矩阵，和/或，用于对第二解调信息进行预编码处理的第二预编码矩阵不等同于对第一数据的共轭进行预编码处理的预编码矩阵，以使得该方案能够应用于MU-MIMO系统中的数据传输过程。
本申请第三方面提供了一种通信装置，该装置可以实现上述第一方面或第一方面任一种可能的实现方式中的方法。该装置包括用于执行上述方法的相应的单元或模块。该装置包括的单元或模块可以通过软件和/或硬件方式实现。例如，该装置可以为接收端，或者，该装置可以为接收端中的组件(例如处理器、芯片或芯片系统等)，或者该装置还可以为能实现全部或部分接收端功能的逻辑模块或软件。
其中，该装置包括收发单元和处理单元；
该收发单元用于接收第一数据；
该收发单元还用于接收第一解调参考信号和第二解调参考信号，该第一解调参考信号和该第二解调参考信号用于解调该第一数据；
该处理单元用于基于该第一解调参考信号和该第二解调参考信号解调该第一数据。
在第三方面的一种可能的实现方式中，
该第一数据承载于第一信号，该第一信号基于该第一数据以及该第一数据的共轭获得。
在第三方面的一种可能的实现方式中，该第一信号满足：
x＝T1b+T2b*；
其中，x表示该第一信号，b表示该第一数据，b*表示该第一数据的共轭，T1表示该第一数据的预编码矩阵，T2表示该第一数据的共轭的预编码矩阵。
在第三方面的一种可能的实现方式中，
该第一数据的层数为m，m为大于或等于1的自然数；
其中，该第一解调参考信号和该第二解调参考信号的端口数为m。
在第三方面的一种可能的实现方式中，
该第一数据满足非正则高斯信令特征，和/或，该第一信号满足非正则高斯信令特征。
在第三方面的一种可能的实现方式中，
该第一解调参考信号承载第一解调信息，该第二解调参考信号承载第二解调信息，且该第一解调信息和该第二解调信息用于获取该第一数据的估计。
在第三方面的一种可能的实现方式中，
该第一解调参考信号为基于第一预编码矩阵进行预编码得到，该第一预编码矩阵关联于该第一解调信息；
该第二解调参考信号为基于第二预编码矩阵进行预编码得到，该第二预编码矩阵关联于该第二解调信息。
在第三方面的一种可能的实现方式中，
该第一预编码矩阵关联于该第一解调信息包括：
其中，F1表示该第一预编码矩阵，该H+为H的逆矩阵或广义逆矩阵，该H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，该R1表示该第一解调信息；
该第二预编码矩阵关联于该第二解调信息包括：
其中，F2表示该第二预编码矩阵，为R2的共轭转置，所述R2表示该第二解调信息。
在第三方面的一种可能的实现方式中，
该第一预编码矩阵不等同于该第一数据的预编码矩阵，和/或，该第二预编码矩阵不等同于该第一数据的共轭的预编码矩阵。
本申请实施例第三方面中，通信装置的组成模块还可以用于执行第一方面的各个可能实现方式中所执行的步骤，并实现相应的技术效果，具体均可以参阅第一方面，此处不再赘述。
本申请第四方面提供了一种通信装置，该装置可以实现上述第二方面或第二方面任一种可能的实现方式中的方法。该装置包括用于执行上述方法的相应的单元或模块。该装置包括的单元或模块可以通过软件和/或硬件方式实现。例如，该装置可以为发送端，或者，该装置可以为发送端中的组件(例如处理器、芯片或芯片系统等)，或者该装置还可以为能实现全部或部分发送端功能的逻辑模块或软件。
其中，该装置包括收发单元和处理单元；
该处理单元用于生成第一数据；
该收发单元用于发送第一数据；
该处理单元还用于第一解调参考信号和第二解调参考信号，该第一解调参考信号和该第二解调参考信号用于解调该第一数据；
该收发单元还用于发送该第一解调参考信号和该第二解调参考信号。
在第四方面的一种可能的实现方式中，
该第一数据承载于第一信号，该第一信号基于该第一数据以及该第一数据的共轭获得。
在第四方面的一种可能的实现方式中，该第一信号满足：
x＝T1b+T2b*；
其中，x表示该第一信号，b表示该第一数据，b*表示该第一数据的共轭，T1表示该第一数据的预编码矩阵，T2表示该第一数据的共轭的预编码矩阵。
在第四方面的一种可能的实现方式中，
该第一数据的层数为m，m为大于或等于1的自然数；
其中，该第一解调参考信号和该第二解调参考信号的端口数为m。
在第四方面的一种可能的实现方式中，
该第一数据满足非正则高斯信令特征，和/或，该第一信号满足非正则高斯信令特征。
在第四方面的一种可能的实现方式中，
该第一解调参考信号承载第一解调信息，该第二解调参考信号承载第二解调信息，且该第一解调信息和该第二解调信息用于获取该第一数据的估计。
在第四方面的一种可能的实现方式中，
该第一解调参考信号为基于第一预编码矩阵进行预编码得到，该第一预编码矩阵关联于该第一解调信息；
该第二解调参考信号为基于第二预编码矩阵进行预编码得到，该第二预编码矩阵关联于该第二解调信息。
在第四方面的一种可能的实现方式中，
该第一预编码矩阵关联于该第一解调信息包括：
其中，F1表示该第一预编码矩阵，该H+为H的逆矩阵或广义逆矩阵，该H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，该R1表示该第一解调信息；
该第二预编码矩阵关联于该第二解调信息包括：
其中，F2表示该第二预编码矩阵，为R2的共轭转置，所述R2表示该第二解调信息。
在第四方面的一种可能的实现方式中，
该第一预编码矩阵不等同于该第一数据的预编码矩阵，和/或，该第二预编码矩阵不等同于该第一数据的共轭的预编码矩阵。
本申请实施例第四方面中，通信装置的组成模块还可以用于执行第二方面的各个可能实现方式中所执行的步骤，并实现相应的技术效果，具体均可以参阅第二方面，此处不再赘述。
本申请实施例第五方面提供了一种通信装置，包括至少一个处理器，所述至少一个处理器与存储器耦合；
该存储器用于存储程序或指令；
该至少一个处理器用于执行该程序或指令，以使该装置实现前述第一方面或第一方面任意一种可能的实现方式所述的方法。
本申请实施例第六方面提供了一种通信装置，包括至少一个处理器，所述至少一个处理器与存储器耦合；
该存储器用于存储程序或指令；
该至少一个处理器用于执行该程序或指令，以使该装置实现前述第二方面或第二方面任意一种可能的实现方式所述的方法。
本申请实施例第七方面提供了一种通信装置，包括至少一个逻辑电路和输入输出接口；
该输入输出接口用于输入第一数据；
该输入输出接口还用于输入第一解调参考信号和第二解调参考信号；
该逻辑电路用于执行如前述第一方面或第一方面任意一种可能的实现方式所述的方法。
本申请实施例第八方面提供了一种通信装置，包括至少一个逻辑电路和输入输出接口；
该输入输出接口用于输出第一数据；
该输入输出接口还用于输出第一解调参考信号和第二解调参考信号；
该逻辑电路用于执行如前述第二方面或第二方面任意一种可能的实现方式所述的方法。
本申请实施例第九方面提供一种计算机可读存储介质，该计算机可读存储介质用于存储一个或多个计算机执行指令，当计算机执行指令被处理器执行时，该处理器执行如上述第一方面或第一方面任意一种可能的实现方式所述的方法，或，该处理器执行如上述第二方面或第二方面任意一种可能的实现方式所述的方法。
本申请实施例第十方面提供一种计算机程序产品(或称计算机程序)，当计算机程序产品被该处理器执行时，该处理器执行上述第一方面或第一方面任意一种可能实现方式的方法，或，该处理器执行上述第二方面或第二方面任意一种可能实现方式的方法。
本申请实施例第十一方面提供了一种芯片系统，该芯片系统包括至少一个处理器，用于支持通信装置实现上述第一方面或第一方面任意一种可能的实现方式中所涉及的功能，或，用于支持通信装置实现上述第二方面或第二方面任意一种可能的实现方式中所涉及的功能。
在一种可能的设计中，该芯片系统还可以包括存储器，存储器，用于保存该通信装置必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。可选的，所述芯片系统还包括接口电路，所述接口电路为所述至少一个处理器提供程序指令和/或数据。
本申请实施例第十二方面提供了一种通信系统，该通信系统包括上述第三方面的通信装置和第四方面的通信装置，和/或，该通信系统包括上述第五方面的通信装置和第六方面的通信装置，和/或，该通信系统包括上述第七方面的通信装置和第八方面的通信装置。
其中，第三方面至第十二方面中任一种设计方式所带来的技术效果可参见上述第一方面至第四方面中不同实现方式所带来的技术效果，在此不再赘述。
应理解，对于设备中的部件来说，上文所述的“发送”可以称为“输出”，“接收”可以称为“输入”。
附图说明
图1为本申请涉及的通信系统的一个示意图；
图2为本申请提供的通信方法的一个示意图；
图3为本申请涉及的通信系统的另一个示意图；
图4为本申请涉及的通信系统的另一个示意图；
图5为本申请提供的通信装置的一个示意图；
图6为本申请提供的通信装置的另一个示意图；
图7为本申请提供的通信装置的另一个示意图；
图8为本申请提供的通信装置的另一个示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
首先，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
(1)终端设备：可以是能够接收网络设备调度和指示信息的无线终端设备，无线终端设备可以是指向用户提供语音和/或数据连通性的设备，或具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。
终端设备可以经无线接入网(radio access network，RAN)与一个或多个核心网或者互联网进行通信，终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话，手机(mobile phone))、计算机和数据卡，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、平板电脑(Pad)、带无线收发功能的电脑等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile station，MS)、远程站(remote station)、接入点(access point，AP)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户站(subscriber station，SS)、用户端设备(customer premises equipment，CPE)、终端(terminal)、用户设备(user equipment，UE)、移动终端(mobile terminal，MT)等。终端设备也可以是可穿戴设备以及下一代通信系统，例如，5G通信系统中的终端设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)中的终端设备等。
(2)网络设备：可以是无线网络中的设备，例如网络设备可以为将终端设备接入到无线网络的无线接入网(radio access network，RAN)节点(或设备)，又可以称为基站。目前，一些RAN设备的举例为：5G通信系统中的新一代基站(generation Node B，gNodeB)、传输接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved Node B，或home Node B，HNB)、基带单元(base band unit，BBU)，或无线保真(wireless fidelity，Wi-Fi)接入点(access point，AP)等。另外，在一种网络结构中，网络设备可以包括集中单元(centralized unit，CU)节点、或分布单元(distributed unit，DU)节点、或包括CU节点和DU节点的RAN设备。
其中，网络设备能够向终端设备发送配置信息(例如承载于调度消息和/或指示消息中)，终端设备进一步根据该配置信息进行网络配置，使得网络设备与终端设备之间的网络配置对齐；或者，通过预设于网络设备的网络配置以及预设于终端设备的网络配置，使得网络设备与终端设备之间的网络配置对齐。具体来说，“对齐”是指网络设备与终端设 备之间存在交互消息时，两者对于交互消息收发的载波频率、交互消息类型的确定、交互消息中所承载的字段信息的含义、或者是交互消息的其它配置的理解一致。
此外，在其它可能的情况下，网络设备可以是其它为终端设备提供无线通信功能的装置。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。为方便描述，本申请实施例并不限定。
网络设备还可以包括核心网设备，核心网设备例如包括访问和移动管理功能(access and mobility management function，AMF)、用户面功能(user plane function，UPF)或会话管理功能(session management function，SMF)等。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
(3)配置与预配置：在本申请中，会同时用到配置与预配置。配置是指基站或服务器等网络设备通过消息或信令将一些参数的配置信息或参数的取值发送给终端，以便终端根据这些取值或信息来确定通信的参数或传输时的资源。预配置与配置类似，它可以是基站或服务器等网络设备通过通信链路或载波把参数信息或取值发送给终端的方式；也可以是将相应的参数或参数值定义(例如，在标准中明确规定参数的取值)出来，或通过提前将相关的参数或取值写到终端设备中的方式，本申请对此不做限定。进一步地，这些取值和参数，是可以变化或更新的。
(4)预编码技术：发送端可以在已知信道状态的情况下，借助与信道相匹配的预编码矩阵来对待发送信号进行处理后发送，使得经过预编码的发送信号与信道相适配。从而，相比于接收端接收未经过预编码的发送信号并消除信道间影响的处理过程，接收端接收经过预编码的发送信号并消除信道间影响的处理过程的复杂度降低。因此，通过对待发送信号的预编码处理，接收信号质量(例如信号与干扰加噪声比(signal to interference plus noise ratio，SINR)等)得以提升。采用预编码技术，还可以实现发送端与多个接收端在相同的时频资源上传输，也就是实现了多用户多输入多输出(multiple user multiple input multiple output，MU-MIMO)。
可选地，该发送端可以为终端设备，该接收端可以为网络设备；或，该发送端可以为网络设备，该接收端可以为终端设备；或，该发送端可以为网络设备，该接收端可以为网络设备；或，该发送端可以为终端设备，该接收端可以为终端设备。
应理解，有关预编码技术的相关描述仅为便于理解而示例，并非用于限制本申请实施例的保护范围。在具体实现过程中，发送端还可以通过其他方式进行预编码。例如，在无法获知信道信息(例如但不限于信道矩阵)的情况下，采用预先设置的预编码矩阵或者加权处理方式进行预编码等。为了简洁，其具体内容本文不再赘述。
(5)天线端口：可简称端口。可以理解为被接收端所识别的发射天线，或者在空间上可以区分的发射天线。针对每个虚拟天线可以预配置一个天线端口，每个虚拟天线可以为多个物理天线的加权组合，每个天线端口可以与一个参考信号对应，因此，每个天线端 口可以称为一个参考信号的端口，例如，解调参考信号(demodulation deference signal，DMRS)、探测参考信号(sounding reference signal，SRS)端口等。
(6)在本申请中，“用于指示”可以包括用于直接指示和用于间接指示。当描述某一指示信息用于指示A时，可以理解为该指示信息携带A、直接指示A或间接指示A。
本申请中，指示信息所指示的信息，称为待指示信息。在具体实现过程中，对待指示信息进行指示的方式有很多种，例如但不限于，可以直接指示待指示信息，如待指示信息本身或者该待指示信息的索引等。也可以通过指示其他信息来间接指示待指示信息，其中该其他信息与待指示信息之间存在关联关系。还可以仅仅指示待指示信息的一部分，而待指示信息的其他部分则是已知的或者提前约定的。例如，还可以借助预先约定(例如协议规定)的各个信息的排列顺序来实现对特定信息的指示，从而在一定程度上降低指示开销。
待指示信息可以作为一个整体一起发送，也可以分成多个子信息分开发送，而且这些子信息的发送周期和/或发送时机可以相同，也可以不同。具体发送方法本申请不进行限定。其中，这些子信息的发送周期和/或发送时机可以是预先定义的，例如根据协议预先定义的，也可以是发射端设备通过向接收端设备发送配置信息来配置的。其中，该配置信息可以例如但不限于包括无线资源控制信令、媒体接入控制(media access control，MAC)层信令和物理层信令中的一种或者至少两种的组合。其中，无线资源控制信令例如包无线资源控制(radio resource control，RRC)信令；MAC层信令例如包括MAC控制元素(control element，CE)；物理层信令例如包括下行控制信息(downlink control information，DCI)。
(7)本申请实施例中的术语“系统”和“网络”可被互换使用。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A、同时存在A和B、单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如“A，B和C中的至少一个”包括A，B，C，AB，AC，BC或ABC。以及，除非有特别说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度。
本申请可以应用于长期演进(long term evolution，LTE)系统、新无线(new radio，NR)系统，或者是其它的通信系统，其中，该通信系统中包括网络设备和终端设备，网络设备作为配置信息发送实体，终端设备作为配置信息接收实体。具体来说，该通信系统中存在实体向另一实体发送配置信息，并向另一实体发送数据、或接收另一实体发送的数据；另一个实体接收配置信息，并根据配置信息向配置信息发送实体发送数据、或接收配置信息发送实体发送的数据。其中，本申请可应用于处于连接状态或激活状态(ACTIVE)的终端设备、也可以应用于处于非连接状态(INACTIVE)或空闲态(IDLE)的终端设备。
请参阅图1，为本申请中通信系统的一种示意图。图1中，示例性的示出了一个网络设备和6个终端设备，6个终端设备分别为终端设备1、终端设备2、终端设备3、终端设备4、终端设备5以及终端设备6等。在图1所示的示例中，是以终端设备1为智能茶杯，终端设备2为智能空调，终端设备3为智能加油机，终端设备4为交通工具，终端设备5为手机，终端设 备6为打印机进行举例说明的。其中，发射端可以为网络设备也可以为终端设备，接收端可以为网络设备也可以为终端设备。
如图1所示，在通信过程中，发送端(或称为发射端、发射端设备)可以是网络设备，接收端(或称为接收端、接收端设备)可以是终端设备(例如图1中的终端设备1-终端设备6)；或者，发送端可以是终端设备，接收端可以是网络设备；或者，发送端和接收端都可以是网络设备；或者，发送端和接收端都可以是终端设备。
图1所示通信系统的无线通信过程中，发送端所发送的用于承载数据的信号需要经过调制处理，相应的接收端所接收的信号为经过调制处理后的信号。相应的，接收端在接收信号之后，通常需要对所接收的信号进行解调，以得到该信号所携带的数据。
然而，对于接收端而言，如何实现信号解调过程并提升解调性能，是一个亟待解决的技术问题。
下面将以多输入多输出(multiple input multiple output，MIMO)系统中的信号解调过程的一种可能的实现为例。
在一种可能的实现过程中，在MIMO系统中的发送端和接收端均配置多根天线，能显著的提升频谱效率，该技术在4G移动通信系统中得到广泛使用。此外，大规模多输出多输出(massive multiple input multiple output，mMIMO)技术通过进一步显著提升天线数，尤其是发射端的天线数，通常在中频段以至少64条收发通道(64Transmit and 64Receive，64TRX)的形式出现，所支持的天线数量也更多(如可多达192个)。在5G业务中，mMIMO商用已取得巨大成功。
以网络设备为基站为例，一般认为基站的天线尺寸较大，而终端设备的天线尺寸通常受限，在无线信号衰减低的中低频段终端天线数目往往较少，主流配置为2天线或者4天线。对于单用户MIMO，受限于终端设备的天线数目，网络设备配置大规模天线数目相比配置普通天线数目频谱效率增益不大。对于多用户MIMO，基站由于配置大规模天线，可通过空间多天线处理对抗多用户干扰，从而支持大量用户同时传输。因此mMIMO技术是一种有效的提升多用户容量的技术。
此外，网络设备可采用多用户线性预编码技术对抗多用户干扰，比如以下行多用户MIMO为例，网络设备采用迫零波束赋形(zero forcing beamforming，ZFBF)的方式进行通信，其中，ZFBF也称为迫零预编码。即网络设备在与多个终端设备(或称多个用户)的通信过程中，通过对预编码矩阵的选取(并向目标用户指示所选取的预编码矩阵)，使得多个终端设备中的其它终端设备对目标终端设备(或称目标用户)的干扰为零，从而有效对抗多用户干扰。
在上述基于ZFBF所实现的信号解调过程中，以网络设备为发送端且终端设备为接收端为例。网络设备可以通过向目标终端设备发送解调信息，即可使得该目标终端设备基于该解调信息对所接收的数据进行解调。并且，由于基于ZFBF的实现过程能够将其他终端设备对该目标终端设备的干扰置零，这就使得网络设备向目标终端设备发送的解调信息无需关联于其它终端设备的预编码矩阵，而仅需要对该目标终端设备的预编码信息的指示即可使得目标终端设备能够正确解调数据。换言之，发送端向接收端发送较少的信息即可实现信 号解调过程，该较少的信息一般承载于一个解调参考信号，即可使得接收端仅基于一个解调参考信号执行信号解调过程。
然而，由于迫零波束赋形目标是干扰置零而不是匹配用户自身信道信息，损失了信道容量。为此，如何有效提升多用户容量尤其是下行多用户容量，是一个值得研究的技术问题。
在一种可能的实现过程中，为了实现信号容量的提升，发送端和接收端可以基于宽线性预编码的方式进行通信。
其中，宽线性预编码可以实现正则高斯信令向非正则高斯信令的变换，使得发送信号不再要求I路信号和Q路信号独立同分布，从而引入更多的信号自由度可以取得对抗多用户干扰和匹配空间信道的优化设计。
以发送端为下行MU-MIMO中的基站且接收端为多个用户为例，基站可以向多个用户同时发送调制信号，比如正交幅度调制(quadrature amplitude modulation，QAM)信号。示例性的，以多个用户的数量为k为例，k的取值为大于或等于2。基站确定串并转换(S/P)处理多获得的k个用户的数据。对于多个用户中的用户k而言，基站可发送一个或多个数据流，每个数据流均为QAM信号。
示例性的，该k个用户的数据包括用户1的数据(User 1's data)记为b1，用户2的数据(User 2's data)记为b2...用户k的数据(User k's data)记为bk。以用户k的数据bk可以表示为的mk表示数据bk的层数(或流数)。
然后，基站对每个用户的数据进行宽线性预编码(Widely Linear Precoding，WLP)，即对每个用户的数据和以及该数据的共轭进行线性处理。此处仍以用户k的数据bk为例，WLP涉及的预编码矩阵包括T1,k和T2,k，且经过WLP处理后的信号满足：
其中，xk表示经过WLP处理后的信号，为bk的共轭。
可选地，xk的矩阵维度为M*1。
其中，基站的天线数为M(M大于或等于1)，M为1的情况下代表单天线或单通道传输。
可以理解的是，基站所发送的数据的流数mk小于或等于基站的天线数M。
经过上述处理过程之后，基站将多个用户宽线性预编码的数据混叠后，在多天线上进行发送。此处以仍以用户k的数据bk对应的xk为例，xk可以在基站的M个天线端口上进行发送。
此后，通过无线信道的传输(该无线信道可以记为信道矩阵(channel matrix)Hk)后，用户在多根天线上收到的多个用户经过信道后的信号。并且，用户进行宽线性估计(widely linear estimation，WLE)的方式执行多用户检测，即对用户收到的信号以及信号的共轭进行线性处理，从而恢复出该用户的数据流。此处仍以用户k的数据bk对应的xk为例，xk在Hk传输之后，用户k在相应的天线端口(例如第k个用户的天线“1，...Nk”，Nk大于或等于2)上接收的数据为yk。此后，用户k基于yk基于WLE过程确定数据bk的估计，记为
在上述宽线性预编码系统下，因为引入了宽线性预编码，用户通过额外的自由度可以取得对抗干扰和匹配空间信道信息的优化效果，提升了用户容量。
然而，在上述实现过程中，接收端需要对干扰进行相应的处理，即接收端需要通过WLE过程中使用的解调信息R1,k和R2,k对干扰进行处理(比如第k个接收端在WLE过程采用 的方式确定该第k个接收端的第一数据的估计，如后文式(16)的方式实现)。而在上述接收端仅基于一个解调参考信号执行信号解调过程的实现方式中，由于接收端进获取自身的预编码信息对应的解调信息，使得该接收端无法对干扰进行消除处理。换言之，上述通过一个解调参考信号的信号解调过程无法使得用户获取干扰信息，导致接收端的解调性能较差，很有可能导致接收端解调失败。
为此，如何提升接收端的解调性能，是一个亟待解决的技术问题。
请参阅图2，为本申请提供的通信方法的一个示意图，该方法包括如下步骤。
S201.发送端发送第一数据。
本实施例中，发送端在步骤S201中发送第一数据，相应的，接收端在步骤S201中接收该第一数据。
需要说明的是，本申请涉及的发送端可以为网络设备或终端设备，接收端也可以为网络设备或终端设备。
在一种可能的实现方式中，接收端在步骤S201中接收的第一数据承载于第一信号，该第一信号基于该第一数据以及该第一数据的共轭获得。换言之，第一信号为基于第一数据的宽线性变换得到，使得接收端所接收的第一信号支持宽线性预编码的场景。
应理解，第一数据包括实部和虚部，第一数据的共轭也包括实部和虚部。其中，第一数据的实部与第一数据的共轭的实部相同，且第一数据的虚部与第一数据的共轭的虚部互为相反数。
此外，本申请中，第一信号为基于第一数据的宽线性变换得到，也可以表述为第一信号为基于第一数据的线性变换以及第一数据的共轭的线性变换得到。
在一种可能的实现方式中，该第一信号满足：
x＝T1b+T2b*；
其中，x表示该第一信号，b表示该第一数据，b*表示该第一数据的共轭，T1表示该第一数据的预编码矩阵，T2表示该第一数据的共轭的预编码矩阵。
示例性的，本实施例中可以应用于MU-MIMO系统，该MU-MIMO系统的一种实现示例如图3所示。在图3中，以发送端的天线端口数(或称发送通道数)为M，接收端的数量为k且第k个接收端的第一数据的流数为mk为例，M和mk均为大于或等于1的整数，且mk小于或等于M。其中，发送端在步骤S201中所发送的用于承载第一数据的第一信号满足：
其中，xk表示第k个接收端的第一信号，bk表示第k个接收端的第一数据，表示第k个接收端的第一数据的共轭，T1,k表示第k个接收端的第一数据的预编码矩阵，T2,k表示第k个接收端的第一数据的共轭的预编码矩阵。
类似地，对于k个接收端中的其他接收端的数据处理过程，发送端也可以基于类似于式(1)的过程实现。
在一种可能的实现方式中，接收端在步骤S201中接收的第一数据满足非正则高斯信令特征，和/或，用于承载该第一数据的第一信号满足非正则高斯信令特征。具体地，接收端所接收的信号(包括第一数据和/或第一信号)满足非正则高斯信令特征，即接收端所接收的信号不再要求I路信号和Q路信号(即同相位(In-phase)信号和正交(quadrature)信号)独立同分布(即表示接收端在检测信号的过程中，所检测的I路信号和Q路信号这两个 变量互相独立且服从相同的统计分布)，或者，接收端所接收的信号的伪协方差矩阵不为零。从而，引入更多的信号自由度可以取得对抗多用户干扰和匹配空间信道的优化设计，使得上述技术方案能够应用于多用户多输入多输出(multi user multiple input and multiple output，MU-MIMO)系统。
示例性的，以式(1)的实现为例，xk的伪协方差可表示为：
其中，E(.)表示求期望，表示xk的转置，xk表示第k个接收端的第一数据，xk,1、xk,2...xk,M分别表示第k个接收端的第一数据在M个天线端口上映射的数据。
举例来说，如果xk是非正则高斯信令，比如是4层BPSK调制信号，I、Q路不满足同分布，且满足如果xk是正则高斯信令，比如是4层QPSK调制信号，I、Q路满足同分布，且满足
S202.发送端发送第一解调参考信号和第二解调参考信号。
本实施例中，发送端在步骤S202中发送第一解调参考信号和第二解调参考信号，相应的，接收端在步骤S202中接收该第一解调参考信号和第二解调参考信号。
在一种可能的实现方式中，接收端在步骤S201中接收的第一数据的层数为m，m为大于或等于1的自然数；其中，接收端在步骤S202中接收的第一解调参考信号和该第二解调参考信号的端口数为m。具体地，第一数据的层数，该第一解调参考信号的端口数和该第二解调参考信号的端口数均为m。即第一数据的层数，第一解调参考信号的端口数和第二解调参考信号的端口数均相同，便于接收端基于同一端口数的解调参考信号对同一层数的数据进行解调，以提升数据解调的成功率。
本申请中，第一数据的层数也可以称为第一数据的流数。
可选地，该第一解调参考信号的端口数小于m，和/或，该第二解调参考信号的端口数小于m。
S203.接收端基于第一解调参考信号和第二解调参考信号解调第一数据。
本实施例中，接收端在步骤S202中接收第一解调参考信号和第二解调参考信号之后，该接收端在步骤S203中基于该第一解调参考信号和该第二解调参考信号解调该第一数据。
在一种可能的实现方式中，接收端在步骤S202中接收的第一解调参考信号承载第一解调信息，接收端在步骤S202中接收的第二解调参考信号承载第二解调信息，且该第一解调信息和该第二解调信息用于获取该第一数据的估计。具体地，接收端所接收的第一解调参考信号和第二解调参考信号分别用于承载不同的解调信息，使得该接收端能够基于该不同的解调信息对第一数据进行解调，以获取该第一数据的估计。
可选地，本申请中，解调信息(例如第一解调信息或第二解调信息)可以表述为解调矩阵，检测矩阵，解调矩阵信息等。
应理解，第一数据的估计指的是发送端发送的第一数据经过信道传输之后，被接收设备接收并在本地进行恢复的数据。换言之，接收端将该第一数据的估计确定为发送端所发送的第一数据，以期得到第一数据所承载的信息。此外，由于无线通信系统中不可避免的信号干扰以及信号衰减等因素，有可能导致接收端所获得的第一数据的估计与发送端所发送的第一数据并不完全等同。
在一种可能的实现方式中，接收端在步骤S202中接收的第一解调参考信号为基于第一预编码矩阵进行预编码得到，该第一预编码矩阵关联于该第一解调信息；接收端在步骤S202中接收的第二解调参考信号为基于第二预编码矩阵进行预编码得到，该第二预编码矩阵关联于该第二解调信息。具体地，接收端所接收的第一解调参考信号和第二解调参考信号分别通过不同预编码矩阵进行预编码得到，使得该接收端基于该不同的预编码矩阵确定所关联的解调信息。
此外，在MU-MIMO系统中，接收端无需解调其它用户(或者其它接收端对应的用户)的解调参考信号的情况下，该接收端基于所接收的第一解调参考信号和第二解调参考信号即可实现对所接收的第一数据的解调，能够降低该接收端的检测复杂度。
在一种可能的实现方式中，该第一预编码矩阵关联于该第一解调信息包括：
其中，F1表示该第一预编码矩阵，该H+为H的逆矩阵或广义逆矩阵，该H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，该R1表示该第一解调信息；
该第二预编码矩阵关联于该第二解调信息包括：
其中，F2表示该第二预编码矩阵，为R2的共轭转置，所述R2表示该第二解调信息。
在一种可能的实现方式中，该第一预编码矩阵不等同于该第一数据的预编码矩阵，和/或，该第二预编码矩阵不等同于该第一数据的共轭的预编码矩阵。具体地，在MU-MIMO系统中，接收端进行多用户检测所需要的第一解调信息和第二解调信息既与该接收端的数据(例如第一数据)的预编码矩阵相关，也与该接收端之外的其他接收端(或者其它接收端对应的用户)的数据的预编码矩阵相关。使得用于对第一解调信息进行预编码处理的第一预编码矩阵不等同于对第一数据进行预编码处理的预编码矩阵，和/或，用于对第二解调信息进行预编码处理的第二预编码矩阵不等同于对第一数据的共轭进行预编码处理的预编码矩阵，以使得该方案能够应用于MU-MIMO系统中的数据传输过程。
基于上述技术方案，接收端在步骤S202中接收的第一解调参考信号和该第二解调参考信号用于解调该接收端在步骤S201中接收的第一数据，使得该接收端在步骤S201中接收第一数据之后，该接收端在步骤S202中基于该第一解调参考信号和该第二解调参考信号解调该第一数据。换言之，接收端在对第一数据进行解调的过程中，该接收端通过接收第一解调参考信号和第二解调参考信号以获取解调信息，并基于该解调信息对所接收的第一数据进行解调，以实现接收端的信号解调过程。
此外，相比于接收端仅基于一个解调参考信号执行信号解调过程的实现方式，在上述技术方案中，接收端所接收的第一解调参考信号和第二解调参考信号能够承载更多的解调信息，使得该接收端能够基于更多的解调信息对所接收的数据进行解调，以提升解调性能。
示例性的，此处仍以上述图3所涉及的场景为例，发送端在步骤S202中向第k个接收端所发送的第一解调参考信号和第二解调参考信号可以通过图4所示实现，即第一解调参考信号记为图4中的解调参考信号第二解调参考信号记为图4中的解调参考信号其它信号的实现可以参考前述图3的描述，此处不做赘述。在图4中，以第k个接收端的第一数据bk的流数，第一解调参考信号的端口数和的端口数均相等，且取值均为mk为例。
在图4所示实现示例中，发送端所发送的数据经过M个天线端口发送之后，经过无线信道(该发送端与第k个接收端之间的无线信道的信道信息记为Hk)的传输之后，第k个接收端(图示中以第k个接收端的天线包括天线1,天线2...天线Nk为例)接收的信号yk可表示为：
其中，表示xi的共轭，Hk为Nk*M的矩阵代表发送端到第k个接收端之间的无线信道的信道信息，x表示k个接收端的数据叠加后的数据(即i大于或等于1，且i小于或等于k)，T1,i和T2,i分别表示第i(i为整数且i的取值为1至k)个接收端的数据的预编码矩阵和第i个接收端的数据的共轭的预编码矩阵，nk为Nk*1的矩阵且nk表示复高斯噪声，即nk的均值为0，方差为表示高斯噪声方差。
在步骤S203中，第k个接收端通过宽线性估计(即对接收信号yk及yk的共轭进行线性变换)，可以得到bk的估计满足：
其中，R1,k表示第一解调信息，R2,k表示第二解调信息，且R1,k和R2,k均为mk*Nk的矩阵，yk表示第k个接收端的接收信号，表示第k个接收端的接收信号的共轭。
下面将通过一些实现示例对上述图3中发送端和接收端的实现过程进行示例性描述。
在图3所示通信方法中，发送端可以通过下述式(5)至(13)的过程实现R1,k和R2,k的确定过程。
具体地，在T1,i、T2,i已知的前提下，R1,k和R2,k可通过最小均方误差算法求取。其中，第k个接收端的均方误差矩阵Ek可表示为
其中，E{}表示求期望，()H表示共轭转置，bk表示第k个接收端的第一数据，表示第k个接收端所获得的第一数据的估计。
通过最小均方误差算法，可得到R1,k和R2,k满足：

其中，R1,k表示第一解调信息，R2,k表示第二解调信息，且R1,k和R2,k均为mk*Nk的矩阵，Hk为Nk*M的矩阵代表发送端到第k个接收端之间的无线信道的信道信息，为Hk的共轭。
此外，式(6.1)和式(6.2)中的其它参数如下述式(7)至式(11)的方式实现。其 中，表示为的逆矩阵，为的共轭，并且，Cyk为接收信号yk的协方差矩阵，可表示为：
其中，E(.)表示求期望，yk表示第k个接收端的接收信号，表示第k个接收端的接收信号的共轭，Hk为Nk*M的矩阵代表发送端到第k个接收端之间的无线信道的信道信息，为Hk的共轭，表示高斯噪声方差，I为单位矩阵。
式(6.1)中的为接收信号yk的伪协方差矩阵，可表示为：
其中，式(6.2)中的表示的共轭。
式(7)中的为xi的协方差矩阵，可表示为：
式(8)中的为接收信号xi的伪协方差矩阵，可表示为：
式(6.1)、式(6.2)中的中间量可表示为：
由式(6.1)、式(6.2)以及式(7)至式(11)可以看出，第k个接收端进行多用户检测所需R1,k和R2,k既与本接收端的宽线性预编码矩阵T1,k、T2,k相关，又与同时被调度的其它k-1个接收端的宽线性预编码矩阵相关。
为此，R1,k和R2,k同时要考虑第k个接收端和干扰用户(即k个接收端中除了第k个接收端之外的其他接收端)的预编码矩阵。为了让第k个接收端获取R1,k和R2,k，在本发明中，如图4所示，发送端针对第k个接收端分别配置解调参考信号和解调参考信号
可选地，和的端口数与数据bk的流数相同，数据bk采用宽线性预编码，如式(1)。
可选地，和分别使用独立的预编码。
可选地，数据bk与解调参考信号在不同的时频资源上进行发送，解调参考信号 可在不同的时频资源上发送，或者采用码分复用。
此外，由于用户进行宽线性检测需要获知宽线性估计所需的解调信息R1,k和R2,k，通过配置解调参考信号和解调参考信号并使得和的端口数与数据bk的空间流数相同，可以以最小参考信号(或称导频)开销支持终端通过解调参考信号和解调参考信号获取R1,k和R2,k，从而支持宽线性估计。
其中，的预编码矩阵为满足：
其中，表示基于预编码矩阵对解调参考信号进行预编码之后得到的信息，Hk为Nk*M的矩阵代表发送端到第k个接收端之间的无线信道的信道信息，表示Hk的广义逆矩阵，也称为摩尔-彭罗斯(Moore-Penrose)广义逆矩阵，表示第k个接收端的第一解调信息，表示第k个接收端的第一解调参考信号。
类似地，的预编码矩阵为满足：
其中，表示基于预编码矩阵对解调参考信号进行预编码之后得到的信息，Hk为Nk*M的矩阵代表发送端到第k个接收端之间的无线信道的信道信息，表示Hk的广义逆矩阵，也称为摩尔-彭罗斯(Moore-Penrose)广义逆矩阵，表示第k个接收端的第二解调信息，表示第k个接收端的第二解调参考信号。
可选地，由于用户k进行多用户所需检测所需的R1,k和R2,k既与本用户宽线性预编码矩阵T1,k、T2,k相关，又与同时被调度的其它用户的宽线性预编码矩阵相关。通过解调参考信号和解调参考信号分别采用独立线性预编码，其预编码矩阵分别承载宽线性估计所需的R1,k和R2,k信息，可使得接收端仅解调自身的解调参考信号而无需解调其它接收端的解调参考信号，就可以获知宽线性估计所需的检测矩阵信息，降低了接收端的检测复杂度。
在图3所示通信方法中，接收端可以通过下述式(14)至(16)的过程实现R1,k和R2,k的确定过程。
在接收端，第k个接收端在步骤S202中接收第一解调参考信号(记为解调参考信号)和第二解调参考信号(记为解调参考信号)之后，第k个接收端可以基于解调参考信号和分别得到宽线性估计所需的R1,k和R2,k。其中，预编码后的信号经过信道传输之后，该第k个接收端收到的信号可表示为：
其中，为高斯噪声。
基于式(14)，第k个接收端可获取R1,k的估计：
类似求取R1,k的过程，用户k可获取R2,k的估计，满足：
并且，第k个接收端得到宽线性估计所需的R1,k和R2,k之后，该第k个接收端对在步骤S201中接收到的数据信号yk进行宽线性估计得到发送数据流的估计
由上述实现过程可知，由于第k个接收端进行宽线性检测需要获知宽线性估计所需的矩阵R1,k和R2,k，通过配置解调参考信号和解调参考信号并使得和的端口数与数据bk的空间流数相同，可以最小导频开销支持终端通过解调参考信号和解调参考信号获取R1,k和R2,k，从而支持宽线性估计。
此外，在MU-MIMO系统中，由于第k个接收端进行多用户检测所需的R1,k和R2,k既与本接收端的宽线性预编码矩阵T1,k、T2,k相关，又与同时被调度的其它接收端的宽线性预编码矩阵相关。通过解调参考信号和解调参考信号分别采用独立线性预编码，其预编码矩阵分别承载宽线性估计所需的R1,k和R2,k信息，可使得第k个接收端仅解调自身的解调参考信号而无需解调其它接收端的解调参考信号，就可以获知宽线性估计所需的检测矩阵信息，降低了用户的检测复杂度。
请参阅图5，本申请实施例提供了一种通信装置，该通信装置500可以实现上述方法实施例中终端设备的功能，因此也能实现上述方法实施例所具备的有益效果。
当该通信装置500用于实现前述图2所示实施例及其任一可选实施例的情况下，该通信装置500所包含的处理单元501和收发单元502用于执行如下实现过程。
该收发单元501用于接收第一数据；
该收发单元501还用于接收第一解调参考信号和第二解调参考信号，该第一解调参考信号和该第二解调参考信号用于解调该第一数据；
该处理单元502用于基于该第一解调参考信号和该第二解调参考信号解调该第一数据。
在一种可能的实现方式中，
该第一数据承载于第一信号，该第一信号基于该第一数据以及该第一数据的共轭获得。
在一种可能的实现方式中，该第一信号满足：
x＝T1b+T2b*；
其中，x表示该第一信号，b表示该第一数据，b*表示该第一数据的共轭，T1表示该第一数据的预编码矩阵，T2表示该第一数据的共轭的预编码矩阵。
在一种可能的实现方式中，
该第一数据的层数为m，m为大于或等于1的自然数；
其中，该第一解调参考信号和该第二解调参考信号的端口数为m。
在一种可能的实现方式中，
该第一数据满足非正则高斯信令特征，和/或，该第一信号满足非正则高斯信令特征。
在一种可能的实现方式中，
该第一解调参考信号承载第一解调信息，该第二解调参考信号承载第二解调信息，且该第一解调信息和该第二解调信息用于获取该第一数据的估计。
在一种可能的实现方式中，
该第一解调参考信号为基于第一预编码矩阵进行预编码得到，该第一预编码矩阵关联于该第一解调信息；
该第二解调参考信号为基于第二预编码矩阵进行预编码得到，该第二预编码矩阵关联于该第二解调信息。
在一种可能的实现方式中，
该第一预编码矩阵关联于该第一解调信息包括：
其中，F1表示该第一预编码矩阵，该H+为H的逆矩阵或广义逆矩阵，该H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，该R1表示该第一解调信息；
该第二预编码矩阵关联于该第二解调信息包括：
其中，F2表示该第二预编码矩阵，为R2的共轭转置，所述R2表示该第二解调信息。
在一种可能的实现方式中，
该第一预编码矩阵不等同于该第一数据的预编码矩阵，和/或，该第二预编码矩阵不等同于该第一数据的共轭的预编码矩阵。
需要说明的是，上述通信装置500的单元的信息执行过程等内容，具体可参见本申请前述所示的方法实施例中的叙述，此处不再赘述。
请参阅图6，本申请实施例提供了一种通信装置，该通信装置600可以实现上述方法实施例中网络设备的功能，因此也能实现上述方法实施例所具备的有益效果。
当该通信装置600用于实现前述图2所示实施例及其任一可选实施例的情况下，该通信装置600所包含的处理单元602和收发单元601用于执行如下实现过程。
该处理单元602用于生成第一数据；
该收发单元601用于发送第一数据；
该处理单元602还用于第一解调参考信号和第二解调参考信号，该第一解调参考信号和该第二解调参考信号用于解调该第一数据；
该收发单元601还用于发送该第一解调参考信号和该第二解调参考信号。
在一种可能的实现方式中，
该第一数据承载于第一信号，该第一信号基于该第一数据以及该第一数据的共轭获得。
在一种可能的实现方式中，该第一信号满足：
x＝T1b+T2b*；
其中，x表示该第一信号，b表示该第一数据，b*表示该第一数据的共轭，T1表示该第一数据的预编码矩阵，T2表示该第一数据的共轭的预编码矩阵。
在一种可能的实现方式中，
该第一数据的层数为m，m为大于或等于1的自然数；
其中，该第一解调参考信号和该第二解调参考信号的端口数为m。
在一种可能的实现方式中，
该第一数据满足非正则高斯信令特征，和/或，该第一信号满足非正则高斯信令特征。
在一种可能的实现方式中，
该第一解调参考信号承载第一解调信息，该第二解调参考信号承载第二解调信息，且该第一解调信息和该第二解调信息用于获取该第一数据的估计。
在一种可能的实现方式中，
该第一解调参考信号为基于第一预编码矩阵进行预编码得到，该第一预编码矩阵关联于该第一解调信息；
该第二解调参考信号为基于第二预编码矩阵进行预编码得到，该第二预编码矩阵关联于该第二解调信息。
在一种可能的实现方式中，
该第一预编码矩阵关联于该第一解调信息包括：
其中，F1表示该第一预编码矩阵，该H+为H的逆矩阵或广义逆矩阵，该H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，该R1表示该第一解调信息；
该第二预编码矩阵关联于该第二解调信息包括：
其中，F2表示该第二预编码矩阵，为R2的共轭转置，所述R2表示该第二解调信息。
在一种可能的实现方式中，
该第一预编码矩阵不等同于该第一数据的预编码矩阵，和/或，该第二预编码矩阵不等同于该第一数据的共轭的预编码矩阵。
需要说明的是，上述通信装置600的单元的信息执行过程等内容，具体可参见本申请前述所示的方法实施例中的叙述，此处不再赘述。
请参阅图7，为本申请的实施例提供的上述实施例中所涉及的通信装置，该通信装置具体可以为上述实施例中的终端设备，其中，该通信装置700的一种可能的逻辑结构示意图，该通信装置700可以包括但不限于至少一个处理器701以及通信端口702。进一步可选的，该装置还可以包括存储器703、总线704中的至少一个，在本申请的实施例中，该至少一个处理器701用于对通信装置700的动作进行控制处理。
此外，处理器701可以是中央处理器单元，通用处理器，数字信号处理器，专用集成电路，现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。该处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理器和微处理器的组合等等。所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
需要说明的是，图7所示通信装置具体可以用于实现前述对应方法实施例中终端设备所实现的其它步骤，并实现终端设备对应的技术效果，图7所示通信装置的具体实现方式，均可以参考前述各个方法实施例中的叙述，此处不再一一赘述。
请参阅图8，为本申请的实施例提供的上述实施例中所涉及的通信装置的结构示意图，该通信装置具体可以为上述实施例中的网络设备，其中，该通信装置的结构可以参考图8所示的结构。
通信装置包括至少一个处理器811以及至少一个网络接口814。进一步可选的，该通信装置还包括至少一个存储器812、至少一个收发器813和一个或多个天线815。处理器811、存储器812、收发器813和网络接口814相连，例如通过总线相连，在本申请实施例中，该连接可包括各类接口、传输线或总线等，本实施例对此不做限定。天线815与收发器813相连。网络接口814用于使得通信装置通过通信链路，与其它通信设备通信。例如网络接口814可以包括通信装置与核心网设备之间的网络接口，例如S1接口，网络接口可以包括通信装置和其他通信装置(例如其他网络设备或者核心网设备)之间的网络接口，例如X2或者Xn接口。
处理器811主要用于对通信协议以及通信数据进行处理，以及对整个通信装置进行控制，执行软件程序，处理软件程序的数据，例如用于支持通信装置执行实施例中所描述的动作。通信装置可以包括基带处理器和中央处理器，基带处理器主要用于对通信协议以及 通信数据进行处理，中央处理器主要用于对整个终端设备进行控制，执行软件程序，处理软件程序的数据。图8中的处理器811可以集成基带处理器和中央处理器的功能，本领域技术人员可以理解，基带处理器和中央处理器也可以是各自独立的处理器，通过总线等技术互联。本领域技术人员可以理解，终端设备可以包括多个基带处理器以适应不同的网络制式，终端设备可以包括多个中央处理器以增强其处理能力，终端设备的各个部件可以通过各种总线连接。该基带处理器也可以表述为基带处理电路或者基带处理芯片。该中央处理器也可以表述为中央处理电路或者中央处理芯片。对通信协议以及通信数据进行处理的功能可以内置在处理器中，也可以以软件程序的形式存储在存储器中，由处理器执行软件程序以实现基带处理功能。
存储器主要用于存储软件程序和数据。存储器812可以是独立存在，与处理器811相连。可选的，存储器812可以和处理器811集成在一起，例如集成在一个芯片之内。其中，存储器812能够存储执行本申请实施例的技术方案的程序代码，并由处理器811来控制执行，被执行的各类计算机程序代码也可被视为是处理器811的驱动程序。
图8仅示出了一个存储器和一个处理器。在实际的终端设备中，可以存在多个处理器和多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以为与处理器处于同一芯片上的存储元件，即片内存储元件，或者为独立的存储元件，本申请实施例对此不做限定。
收发器813可以用于支持通信装置与终端之间射频信号的接收或者发送，收发器813可以与天线815相连。收发器813包括发射机Tx和接收机Rx。具体地，一个或多个天线815可以接收射频信号，该收发器813的接收机Rx用于从天线接收该射频信号，并将射频信号转换为数字基带信号或数字中频信号，并将该数字基带信号或数字中频信号提供给该处理器811，以便处理器811对该数字基带信号或数字中频信号做进一步的处理，例如解调处理和译码处理。此外，收发器813中的发射机Tx还用于从处理器811接收经过调制的数字基带信号或数字中频信号，并将该经过调制的数字基带信号或数字中频信号转换为射频信号，并通过一个或多个天线815发送该射频信号。具体地，接收机Rx可以选择性地对射频信号进行一级或多级下混频处理和模数转换处理以得到数字基带信号或数字中频信号，该下混频处理和模数转换处理的先后顺序是可调整的。发射机Tx可以选择性地对经过调制的数字基带信号或数字中频信号时进行一级或多级上混频处理和数模转换处理以得到射频信号，该上混频处理和数模转换处理的先后顺序是可调整的。数字基带信号和数字中频信号可以统称为数字信号。
收发器也可以称为收发单元、收发机、收发装置等。可选的，可以将收发单元中用于实现接收功能的器件视为接收单元，将收发单元中用于实现发送功能的器件视为发送单元，即收发单元包括接收单元和发送单元，接收单元也可以称为接收机、输入口、接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
需要说明的是，图8所示通信装置具体可以用于实现前述方法实施例中网络设备所实现的步骤，并实现网络设备对应的技术效果，图8所示通信装置的具体实现方式，均可以参考前述的各个方法实施例中的叙述，此处不再一一赘述。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质用于存储一个或多个计算机执行指令，当计算机执行指令被处理器执行时，该处理器执行如前述实施例中通信装置(通过终端设备实现时)可能的实现方式所述的方法。
本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质用于存储一个或多个计算机执行指令，当计算机执行指令被处理器执行时，该处理器执行如前述实施例中通信装置(通过网络设备实现时)可能的实现方式所述的方法。
本申请实施例还提供一种计算机程序产品(或称计算机程序)，当计算机程序产品被该处理器执行时，该处理器执行上述通信装置(通过终端设备实现时)可能实现方式的方法。
本申请实施例还提供一种计算机程序产品(或称计算机程序)，当计算机程序产品被该处理器执行时，该处理器执行上述通信装置(通过网络设备实现时)可能实现方式的方法。
本申请实施例还提供了一种芯片系统，该芯片系统包括至少一个处理器，用于支持终端设备实现上述通信装置(通过终端设备实现时)可能的实现方式中所涉及的功能。可选的，所述芯片系统还包括接口电路，所述接口电路为所述至少一个处理器提供程序指令和/或数据。在一种可能的设计中，该芯片系统还可以包括存储器，存储器，用于保存该终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例还提供了一种芯片系统，该芯片系统包括至少一个处理器，用于支持网络设备实现上述通信装置(通过网络设备实现时)可能的实现方式中所涉及的功能。可选的，所述芯片系统还包括接口电路，所述接口电路为所述至少一个处理器提供程序指令和/或数据。在一种可能的设计中，芯片系统还可以包括存储器，存储器，用于保存该网络设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件，其中，该网络设备具体可以为前述前述方法实施例中网络设备。
本申请实施例还提供了一种通信系统，该网络系统架构包括上述任一实施例中的通信装置(包括发送端和接收端)。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既 可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请实施例的具体实施方式，但本申请实施例的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请实施例揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请实施例的保护范围之内。因此，本申请实施例的保护范围应以所述权利要求的保护范围为准。

Claims (41)

  1. 一种通信方法，其特征在于，包括：
    接收第一数据；
    接收第一解调参考信号和第二解调参考信号，所述第一解调参考信号和所述第二解调参考信号用于解调所述第一数据；
    基于所述第一解调参考信号和所述第二解调参考信号解调所述第一数据。
  2. 根据权利要求1所述的方法，其特征在于，所述第一数据承载于第一信号，所述第一信号基于所述第一数据以及所述第一数据的共轭获得。
  3. 根据权利要求2所述的方法，其特征在于，所述第一信号满足：
    x＝T1b+T2b*；
    其中，x表示所述第一信号，b表示所述第一数据，b*表示所述第一数据的共轭，T1表示所述第一数据的预编码矩阵，T2表示所述第一数据的共轭的预编码矩阵。
  4. 根据权利要求2或3所述的方法，其特征在于，
    所述第一数据满足非正则高斯信令特征，和/或，所述第一信号满足非正则高斯信令特征。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，
    所述第一数据的层数为m，m为大于或等于1的自然数；
    其中，所述第一解调参考信号和所述第二解调参考信号的端口数为m。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，
    所述第一解调参考信号承载第一解调信息，所述第二解调参考信号承载第二解调信息，且所述第一解调信息和所述第二解调信息用于获取所述第一数据的估计。
  7. 根据权利要求6所述的方法，其特征在于，
    所述第一解调参考信号为基于第一预编码矩阵进行预编码得到，所述第一预编码矩阵关联于所述第一解调信息；
    所述第二解调参考信号为基于第二预编码矩阵进行预编码得到，所述第二预编码矩阵关联于所述第二解调信息。
  8. 根据权利要求7所述的方法，其特征在于，
    所述第一预编码矩阵关联于所述第一解调信息包括：
    其中，F1表示所述第一预编码矩阵，所述H+为H的逆矩阵或广义逆矩阵，所述H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，所述R1表示所述第一解调信息；
    所述第二预编码矩阵关联于所述第二解调信息包括：
    其中，F2表示所述第二预编码矩阵，为R2的共轭转置，所述R2表示所述第二解调信息。
  9. 根据权利要求7或8所述的方法，其特征在于，
    所述第一预编码矩阵不等同于所述第一数据的预编码矩阵，和/或，所述第二预编码矩 阵不等同于所述第一数据的共轭的预编码矩阵。
  10. 一种通信方法，其特征在于，包括：
    发送第一数据；
    发送第一解调参考信号和第二解调参考信号，所述第一解调参考信号和所述第二解调参考信号用于解调所述第一数据。
  11. 根据权利要求10所述的方法，其特征在于，所述第一数据承载于第一信号，所述第一信号基于所述第一数据以及所述第一数据的共轭获得。
  12. 根据权利要求11所述的方法，其特征在于，所述第一信号满足：
    x＝T1b+T2b*；
    其中，x表示所述第一信号，b表示所述第一数据，b*表示所述第一数据的共轭，T1表示所述第一数据的预编码矩阵，T2表示所述第一数据的共轭的预编码矩阵。
  13. 根据权利要求11或12所述的方法，其特征在于，
    所述第一数据满足非正则高斯信令特征，和/或，所述第一信号满足非正则高斯信令特征。
  14. 根据权利要求10至13任一项所述的方法，其特征在于，
    所述第一数据的层数为m，m为大于或等于1的自然数；
    其中，所述第一解调参考信号和所述第二解调参考信号的端口数为m。
  15. 根据权利要求10至14任一项所述的方法，其特征在于，
    所述第一解调参考信号承载第一解调信息，所述第二解调参考信号承载第二解调信息，且所述第一解调信息和所述第二解调信息用于获取所述第一数据的估计。
  16. 根据权利要求15所述的方法，其特征在于，
    所述第一解调参考信号为基于第一预编码矩阵进行预编码得到，所述第一预编码矩阵关联于所述第一解调信息；
    所述第二解调参考信号为基于第二预编码矩阵进行预编码得到，所述第二预编码矩阵关联于所述第二解调信息。
  17. 根据权利要求16所述的方法，其特征在于，
    所述第一预编码矩阵关联于所述第一解调信息包括：
    其中，F1表示所述第一预编码矩阵，所述H+为H的逆矩阵或广义逆矩阵，所述H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，所述R1表示所述第一解调信息；
    所述第二预编码矩阵关联于所述第二解调信息包括：
    其中，F2表示所述第二预编码矩阵，为R2的共轭转置，所述R2表示所述第二解调信息。
  18. 根据权利要求16或17所述的方法，其特征在于，
    所述第一预编码矩阵不等同于所述第一数据的预编码矩阵，和/或，所述第二预编码矩阵不等同于所述第一数据的共轭的预编码矩阵。
  19. 一种通信装置，其特征在于，包括处理单元和收发单元；
    所述收发单元用于接收第一数据；
    所述收发单元还用于接收第一解调参考信号和第二解调参考信号，所述第一解调参考信号和所述第二解调参考信号用于解调所述第一数据；
    所述处理单元用于基于所述第一解调参考信号和所述第二解调参考信号解调所述第一数据。
  20. 根据权利要求19所述的装置，其特征在于，
    所述第一数据承载于第一信号，所述第一信号基于所述第一数据以及所述第一数据的共轭获得。
  21. 根据权利要求20所述的装置，其特征在于，所述第一信号满足：
    x＝T1b+T2b*；
    其中，x表示所述第一信号，b表示所述第一数据，b*表示所述第一数据的共轭，T1表示所述第一数据的预编码矩阵，T2表示所述第一数据的共轭的预编码矩阵。
  22. 根据权利要求20或21所述的装置，其特征在于，
    所述第一数据满足非正则高斯信令特征，和/或，所述第一信号满足非正则高斯信令特征。
  23. 根据权利要求19至22任一项所述的装置，其特征在于，
    所述第一数据的层数为m，m为大于或等于1的自然数；
    其中，所述第一解调参考信号和所述第二解调参考信号的端口数为m。
  24. 根据权利要求19至23任一项所述的装置，其特征在于，
    所述第一解调参考信号承载第一解调信息，所述第二解调参考信号承载第二解调信息，且所述第一解调信息和所述第二解调信息用于获取所述第一数据的估计。
  25. 根据权利要求24所述的装置，其特征在于，
    所述第一解调参考信号为基于第一预编码矩阵进行预编码得到，所述第一预编码矩阵关联于所述第一解调信息；
    所述第二解调参考信号为基于第二预编码矩阵进行预编码得到，所述第二预编码矩阵关联于所述第二解调信息。
  26. 根据权利要求25所述的装置，其特征在于，
    所述第一预编码矩阵关联于所述第一解调信息包括：
    其中，F1表示所述第一预编码矩阵，所述H+为H的逆矩阵或广义逆矩阵，所述H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，所述R1表示所述第一解调信息；
    所述第二预编码矩阵关联于所述第二解调信息包括：
    其中，F2表示所述第二预编码矩阵，为R2的共轭转置，所述R2表示所述第二解调信息。
  27. 根据权利要求25或26所述的装置，其特征在于，
    所述第一预编码矩阵不等同于所述第一数据的预编码矩阵，和/或，所述第二预编码矩阵不等同于所述第一数据的共轭的预编码矩阵。
  28. 一种通信装置，其特征在于，包括处理单元和收发单元；
    所述处理单元用于生成第一数据；
    所述收发单元用于发送第一数据；
    所述处理单元还用于第一解调参考信号和第二解调参考信号，所述第一解调参考信号和所述第二解调参考信号用于解调所述第一数据；
    所述收发单元还用于发送所述第一解调参考信号和所述第二解调参考信号。
  29. 根据权利要求28所述的装置，其特征在于，
    所述第一数据承载于第一信号，所述第一信号基于所述第一数据以及所述第一数据的共轭获得。
  30. 根据权利要求29所述的装置，其特征在于，所述第一信号满足：
    x＝T1b+T2b*；
    其中，x表示所述第一信号，b表示所述第一数据，b*表示所述第一数据的共轭，T1表示所述第一数据的预编码矩阵，T2表示所述第一数据的共轭的预编码矩阵。
  31. 根据权利要求29或30所述的装置，其特征在于，
    所述第一数据满足非正则高斯信令特征，和/或，所述第一信号满足非正则高斯信令特征。
  32. 根据权利要求28至31任一项所述的装置，其特征在于，
    所述第一数据的层数为m，m为大于或等于1的自然数；
    其中，所述第一解调参考信号和所述第二解调参考信号的端口数为m。
  33. 根据权利要求28至32任一项所述的装置，其特征在于，
    所述第一解调参考信号承载第一解调信息，所述第二解调参考信号承载第二解调信息，且所述第一解调信息和所述第二解调信息用于获取所述第一数据的估计。
  34. 根据权利要求33所述的装置，其特征在于，
    所述第一解调参考信号为基于第一预编码矩阵进行预编码得到，所述第一预编码矩阵关联于所述第一解调信息；
    所述第二解调参考信号为基于第二预编码矩阵进行预编码得到，所述第二预编码矩阵关联于所述第二解调信息。
  35. 根据权利要求34所述的装置，其特征在于，
    所述第一预编码矩阵关联于所述第一解调信息包括：
    其中，F1表示所述第一预编码矩阵，所述H+为H的逆矩阵或广义逆矩阵，所述H表示发送端与接收端之间信道的信道信息，为R1的共轭转置，所述R1表示所述第一解调信息；
    所述第二预编码矩阵关联于所述第二解调信息包括：
    其中，F2表示所述第二预编码矩阵，为R2的共轭转置，所述R2表示所述第二解调信 息。
  36. 根据权利要求34或35所述的装置，其特征在于，
    所述第一预编码矩阵不等同于所述第一数据的预编码矩阵，和/或，所述第二预编码矩阵不等同于所述第一数据的共轭的预编码矩阵。
  37. 一种通信装置，其特征在于，包括至少一个逻辑电路和输入输出接口；
    所述输入输出接口用于输入第一数据；
    所述输入输出接口还用于输入第一解调参考信号和第二解调参考信号，所述第一解调参考信号和所述第二解调参考信号用于解调所述第一数据；
    所述逻辑电路用于执行如权利要求1至9中任一项所述的方法。
  38. 一种通信装置，其特征在于，包括至少一个逻辑电路和输入输出接口；
    所述输入输出接口用于输出第一数据；
    所述输入输出接口还用于输出第一解调参考信号和第二解调参考信号，所述第一解调参考信号和所述第二解调参考信号用于解调所述第一数据；
    所述逻辑电路用于执行如权利要求10至18中任一项所述的方法。
  39. 一种通信系统，其特征在于，
    所述通信系统包括如权利要求19至27中任一项的所述通信装置，以及如权利要求28至36中任一项的所述通信装置；
    或者，
    所述通信系统包括权利要求37的所述通信装置和权利要求38的所述通信装置。
  40. 一种计算机可读存储介质，其特征在于，所述介质存储有指令，当所述指令被计算机执行时，实现权利要求1至18中任一项所述的方法。
  41. 一种计算机程序产品，其特征在于，包括指令，当所述指令在计算机上运行时，使得计算机执行如权利要求1至18中任一项所述的方法。
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