WO2024036588A1 - Appareil et procédé de traitement de signal, et dispositif associé - Google Patents

Appareil et procédé de traitement de signal, et dispositif associé Download PDF

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Publication number
WO2024036588A1
WO2024036588A1 PCT/CN2022/113502 CN2022113502W WO2024036588A1 WO 2024036588 A1 WO2024036588 A1 WO 2024036588A1 CN 2022113502 W CN2022113502 W CN 2022113502W WO 2024036588 A1 WO2024036588 A1 WO 2024036588A1
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WIPO (PCT)
Prior art keywords
signal
signals
sub
pas
processor
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PCT/CN2022/113502
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English (en)
Chinese (zh)
Inventor
刘乔
杨贵晨
刘发林
刘瑶
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华为技术有限公司
中国科学技术大学
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Priority to PCT/CN2022/113502 priority Critical patent/WO2024036588A1/fr
Publication of WO2024036588A1 publication Critical patent/WO2024036588A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters

Definitions

  • the present application relates to the field of communications, and in particular, to a signal processing device, method and related equipment.
  • PAPR peak-to-average power ratio
  • the power amplifier is an important component of communication devices. Signals with high PAPR can easily affect the signal processing performance of the PA. For example, it may cause the error vector magnitude of the signal processed by the PA. , EVM) deteriorates, increases the bit error rate of the receiver, causes adjacent channel interference, etc. The occurrence of these situations will cause the signal transmission efficiency of the communication device including the PA to decrease and affect the communication quality.
  • This application provides a signal processing device, method and related equipment for reducing the impact of the nonlinear characteristics of the PA on the signal processing performance of the PA, in order to improve communication quality.
  • the implementation of combining the M channels of first signals through a combiner can reduce cost and power consumption, and reduce the complexity of nonlinear predistortion.
  • a first aspect of the present application provides a signal processing device.
  • the signal processing device is included in a communication device.
  • the communication device includes at least M PAs.
  • the communication device may be a terminal device or a network device.
  • the signal processing device includes a combiner for inputting M channels of first signals and outputting a combined second signal of the M channels of first signals, wherein the M channels of first signals respectively include output signals of M PAs, M is an integer greater than 2; the signal processing device also includes a signal processor for outputting a third signal based on the second signal, wherein the third signal is used to compensate for the nonlinear information of the M first signals. .
  • the combiner in the signal processing device is used to input M channels of first signals and output a combined second signal of the M channels of first signals; in addition, the signal processor in the signal processing device is used to input M channels of first signals based on the The second signal outputs a third signal used to compensate for the nonlinear information of the M first signals.
  • the third signal obtained by the signal processing device can be used to perform pre-distortion compensation on the nonlinear information of the M first signals, reducing the impact of the nonlinear characteristics of the PA on the signal processing performance of the PA, in order to improve communication quality.
  • the implementation of combining the M channels of first signals through a combiner can reduce cost and power consumption, and reduce the complexity of nonlinear predistortion.
  • the signal processing device includes the M PAs.
  • the signal processing device does not include the M PAs, that is, the signal processing device and the M PAs are independently provided parts of the communication device.
  • the third signal includes a first sub-signal, and the first sub-signal is used to compensate the first nonlinear information of the M first signals.
  • the third signal obtained by the signal processor in the signal processing device includes the first sub-signal used to compensate the first nonlinear information of the M first signals.
  • the first nonlinear information may include the same nonlinear information corresponding to the M first signals, in order to perform predistortion compensation on the first nonlinear information of the M first signals through the first sub-signal, thereby reducing M The influence of the same nonlinear characteristics of two PAs on the signal processing performance of the PA.
  • the first nonlinear information of the M first signals can be called the common nonlinear information of the M first signals, the same nonlinear information of the M first signals, and the nonlinear information of the M first signals. Identical parts, common parts in the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the signal processor is specifically configured to output the first sub-signal to a first predistorter, and the first predistorter is connected to the M PAs.
  • the third signal obtained by the signal processor in the signal processing device includes the first sub-signal used to compensate the first nonlinear information of the M first signals, and the signal processor can also The first sub-signal is output to a first predistorter connected to the M PAs, in order to perform predistortion compensation on the M PAs based on the first sub-signals through the first predistorter.
  • the signal processing device includes the first predistorter.
  • the signal processing device does not include the first predistorter, that is, the signal processing device and the first predistorter are both independently arranged parts of the communication device.
  • N is an integer greater than or equal to 1.
  • the value of N may be the same as the value of M, that is, predistortion compensation is performed on M PAs based on N first sub-signals through N predistorters.
  • the value of N is 1, that is, one predistorter is used to perform predistortion compensation on M PAs based on the first sub-signal.
  • the value of N is greater than 1 and less than M, that is, N predistorters are used to perform predistortion compensation on N PAs among the M PAs based on the N first sub-signals, and the remaining M-N PAs do not need to be predistorted. Distortion compensation to reduce processing overhead.
  • the nonlinear information of the M-N PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the first nonlinear information of the M-N PAs performs predistortion compensation in other ways.
  • the value of N is greater than 1 and less than M, that is, predistortion compensation is performed on M PAs based on N first sub-signals through N predistorters, where at least one of the N predistorters predistorts.
  • the distorter performs pre-distortion compensation on two or more PAs based on the first sub-signal.
  • the first predistorter is used to input the first sub-signal and output M first processing results to the M PAs respectively, wherein the M first processing results The result is obtained by performing predistortion processing based on the first sub-signal.
  • the first pre-distorter is used to perform pre-distortion processing based on the first sub-signal to obtain M first processes.
  • M first processing results are output to M PAs respectively, so that the M PAs respectively perform predistortion compensation on the first nonlinear information based on the M first processing results.
  • the third signal includes M second sub-signals, and the M second sub-signals are used to compensate for the second nonlinear information of the M first signals.
  • the third signal obtained by the signal processor in the signal processing device includes a second sub-signal used to compensate for the second nonlinear information of the M first signals.
  • the second nonlinear information may include different nonlinear information corresponding to M channels of first signals, in order to perform predistortion compensation on the second nonlinear information of the M channels of first signals through the M second sub-signals.
  • the second nonlinear information of the M first signals can be called non-shared nonlinear information of the M first signals, different nonlinear information of the M first signals, and nonlinear information of the M first signals. Different parts of the information, non-shared parts of the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the number of second sub-signals included in the third signal is recorded as K, where K is an integer greater than or equal to 1, where K may be less than M. That is, predistortion compensation is performed on K PAs among the M PAs through the K first sub-signals, while the remaining M-K PAs do not require predistortion compensation to reduce processing overhead.
  • the nonlinear information of the M-K PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the second nonlinear information of the M-K PAs performs predistortion compensation through other methods.
  • the signal processor is specifically configured to output the M second sub-signals to M second predistorters, and the M second predistorters are connected to the M PA connection.
  • the third signal obtained by the signal processor in the signal processing device includes M second sub-signals used to compensate for the second nonlinear information of the M first signals, and the signal processor
  • the M second sub-signals may also be output to the M second pre-distorters connected to the M PAs respectively, so that the M second pre-distorters can perform on the M PAs based on the M second sub-signals. Predistortion compensation.
  • the signal processing device includes the second predistorter.
  • the signal processing device does not include the second predistorter, that is, the signal processing device and the second predistorter are both independently arranged parts of the communication device.
  • the second predistorter and the first predistorter are implemented by the same predistorter, or the second predistorter is different from the first predistorter.
  • the M second predistorters are used to respectively input the M second sub-signals and output M second processing results to the M PAs respectively, wherein, The M second processing results are respectively obtained by performing predistortion processing based on the second sub-signal.
  • the M second pre-distorters are used to perform pre-distortion processing based on the second sub-signals.
  • M second processing results are obtained and M second processing results are output to M PAs respectively, so that the M PAs respectively perform predistortion compensation on the second nonlinear information based on the M second processing results.
  • the number of the second pre-distortion processors may be K to reduce processing overhead.
  • the device further includes a sampler; the combiner is connected to the signal processor through the sampler.
  • the combiner in the signal processing device is connected to the signal processor through the sampler, so that the signal of the combiner is input to the signal processor for further processing after being sampled and processed by the sampler.
  • the signal processing device includes the sampler.
  • the signal processing device does not include the sampler, that is, the signal processing device and the sampler are both independently provided parts of the communication device.
  • the sampler is configured to input the fourth signal and output an undersampled result of the fourth signal to the signal processor, where the fourth signal is obtained based on the second signal.
  • the sampler in the signal processing device when the combiner in the signal processing device is connected to the signal processor through a sampler, the sampler is used to input the fourth signal obtained based on the second signal and output the fourth signal to the signal processor.
  • the undersampling result of the fourth signal enables the signal processor to determine a third signal for compensating the nonlinear information of the M first signals based on the undersampling result, so as to reduce the number of samples processed by the signal processor and reduce Computational complexity.
  • the signal processor is specifically configured to output the third signal based on the undersampling result of the fourth signal.
  • the signal processor can specifically output the third signal based on the undersampling result of the fourth signal to reduce the calculation time. the complexity.
  • the M first signals each further include input signals of M PAs
  • the signal processor is further configured to provide the signal to the third predistorter based on the input signals of the M PAs. (or modulator) outputs a fifth signal, which is used to compensate for the in-phase quadrature (IQ) error of the modulator.
  • the signal processor is also configured to output to the third predistorter (or modulator) based on the input signals of the M PAs for compensating the modulator.
  • the fifth signal of the IQ error is used to facilitate the third predistorter (or modulator) to subsequently perform signal compensation processing based on the fifth signal, thereby further improving the processing performance of predistortion compensation based on the third signal.
  • the fifth signal includes IQ imbalance parameters and/or compensation model parameters.
  • the signal processing device includes the third predistorter (or modulator).
  • the signal processing device does not include the third predistorter (or modulator), that is, the signal processing device and the third predistorter (or modulator) are both independently provided parts of the communication device.
  • the third predistorter is the first predistorter, or the third predistorter is the second predistorter, or the third predistorter is different from the first predistorter and the third predistorter Different from the second predistorter.
  • the combiner is connected to the M PAs through M adjustable attenuators, and the M adjustable attenuators are respectively used to conduct output signals of the M PAs. deal with.
  • the M first signals output by the M PA output combiners can be processed by M adjustable attenuators respectively and then input to the combiner for combining processing, so that the combiner obtains the attenuated signals, reducing processing complexity and improving the accuracy of subsequent calculations.
  • the signal processing device includes the adjustable attenuator.
  • the signal processing device does not include the adjustable attenuator, that is, the signal processing device and the adjustable attenuator are independently provided parts of the communication device.
  • the M adjustable attenuators are respectively used to process input signals of the M PAs.
  • the M adjustable attenuators can also be used to process the input signals of the M PAs respectively, so as to reduce the The processing complexity of the third predistorter (or modulator).
  • the M adjustable attenuators are connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module is used to configure the power coefficients of the M adjustable attenuators. Make adjustments.
  • the M adjustable attenuators can also be connected to an adjustable power coefficient configuration module, and the adjustable power coefficient The configuration module is used to adjust the power configuration coefficients of the M adjustable attenuators to adjust the power configuration coefficients of the M first signals input to the combiner.
  • the signal processing device includes the adjustable power coefficient configuration module.
  • the signal processing device does not include the adjustable power coefficient configuration module, that is, the signal processing device and the adjustable power coefficient configuration module are both independently provided parts of the communication device.
  • the second aspect of the present application provides a signal processing method, which is executed by a communication device, or the method is performed by some components in the communication device (such as the signal processing device mentioned in the first aspect and any of its embodiments, or (processor, chip or chip system, etc.) in the communication device, or the method can also be implemented by a functional logic module or software that can implement the signal processing method.
  • the communication device may be a terminal device or a network device.
  • the communication method is described by taking the example that the communication method is executed by a signal processing device.
  • the signal processing device acquires M first signals, the first signal includes the output signal of the PA, and M is an integer greater than 2; the signal processing device determines the second signal after combining the M first signals; The signal processing device outputs a third signal based on the second signal, and the third signal is used to compensate for the nonlinear information of the M first signals.
  • the signal processing device determines a second signal after combining the M channels of first signals, and the signal processing device is based on the first signal.
  • the second signal outputs a third signal used to compensate for the nonlinear information of the M first signals.
  • the third signal obtained by the signal processing device can be used to perform pre-distortion compensation on the nonlinear information of the M first signals, reducing the impact of the nonlinear characteristics of the PA on the signal processing performance of the PA, in order to improve communication quality.
  • the third signal includes a first sub-signal, the first sub-signal is used to compensate the first nonlinear information of the M first signals;
  • Outputting a third signal from two signals includes: outputting the first sub-signal to a first predistorter based on the second signal, and the first predistorter is connected to the M PAs; wherein the first predistorter is used to input the first sub-signal, and output M first processing results to the M PAs respectively, where the M first processing results are obtained by pre-distortion processing based on the first sub-signal.
  • the third signal obtained by the signal processing device includes the first sub-signal used to compensate the first nonlinear information of the M first signals.
  • the first nonlinear information may include the same nonlinear information corresponding to the M first signals, in order to perform predistortion compensation on the first nonlinear information of the M first signals through the first sub-signal, thereby reducing M The influence of the same nonlinear characteristics of two PAs on the signal processing performance of the PA.
  • the first nonlinear information of the M first signals can be called the common nonlinear information of the M first signals, the same nonlinear information of the M first signals, and the nonlinear information of the M first signals. Identical parts, common parts in the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the signal processing device includes the first predistorter.
  • the signal processing device does not include the first predistorter, that is, the signal processing device and the first predistorter are both independently arranged parts of the communication device.
  • N is an integer greater than or equal to 1.
  • the value of N may be the same as the value of M, that is, predistortion compensation is performed on M PAs based on N first sub-signals through N predistorters.
  • the value of N is 1, that is, one predistorter is used to perform predistortion compensation on M PAs based on the first sub-signal.
  • the value of N is greater than 1 and less than M, that is, N predistorters are used to perform predistortion compensation on N PAs among the M PAs based on the N first sub-signals, and the remaining M-N PAs do not need to be predistorted. Distortion compensation to reduce processing overhead.
  • the nonlinear information of the M-N PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the first nonlinear information of the M-N PAs performs predistortion compensation in other ways.
  • the value of N is greater than 1 and less than M, that is, predistortion compensation is performed on M PAs based on N first sub-signals through N predistorters, where at least one of the N predistorters predistorts.
  • the distorter performs pre-distortion compensation on two or more PAs based on the first sub-signal.
  • the third signal includes M second sub-signals, and the M second sub-signals are used to compensate for the second nonlinear information of the M first signals;
  • the outputting the third signal based on the second signal includes: outputting the M second sub-signals to M second predistorters based on the second signal, and the M second predistorters are respectively connected to the M PAs; Wherein, the M second predistorters are used to respectively input the M second sub-signals and output M second processing results to the M PAs respectively, wherein the M second processing results are respectively based on the The two sub-signals are obtained by pre-distortion processing.
  • the third signal obtained by the signal processing device includes a second sub-signal used to compensate for the second nonlinear information of the M first signals.
  • the second nonlinear information may include different nonlinear information corresponding to M channels of first signals, in order to perform predistortion compensation on the second nonlinear information of the M channels of first signals through the M second sub-signals.
  • the second nonlinear information of the M first signals can be called non-shared nonlinear information of the M first signals, different nonlinear information of the M first signals, and nonlinear information of the M first signals. Different parts of the information, non-shared parts of the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the number of second sub-signals included in the third signal is recorded as K, where K is an integer greater than or equal to 1, where K may be less than M. That is, predistortion compensation is performed on K PAs among the M PAs through the K first sub-signals, while the remaining M-K PAs do not require predistortion compensation to reduce processing overhead.
  • the nonlinear information of the M-K PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the second nonlinear information of the M-K PAs performs predistortion compensation through other methods.
  • outputting the third signal based on the second signal includes: outputting the third signal based on an undersampling result of the second signal.
  • the signal processing device in the process of outputting the third signal based on the second signal, can output the third signal based on the undersampling result of the second signal, that is, the signal processing device can output the third signal based on the undersampling result.
  • the third signal used to compensate the nonlinear information of the M first signals is determined, so as to reduce the number of samples processed and reduce the computational complexity.
  • determining the combined second signal of the M first signals includes: after processing the output signals of the M PAs respectively based on M adjustable attenuators, determining the second signal.
  • the M first signals output by the M PA output combiners can be processed by M adjustable attenuators respectively and then input to the combiner for combining processing, so that the combiner obtains the attenuated signals, reducing processing complexity and improving the accuracy of subsequent calculations.
  • the M adjustable attenuators are connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module is used to configure the power coefficients of the M adjustable attenuators. Make adjustments.
  • the M adjustable attenuators can also be connected to an adjustable power coefficient configuration module, and the adjustable power coefficient The configuration module is used to adjust the power configuration coefficients of the M adjustable attenuators to adjust the power configuration coefficients of the M first signals input to the combiner.
  • a third 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 may be a communication device, or the device may be a component in the communication device (such as the signal processing device mentioned in the first aspect and any embodiment thereof, or a processor, chip or chip system in the communication device etc.), or the method can also be implemented by functional logic modules or software that can implement the signal processing method.
  • the communication device may be a terminal device or a network device.
  • the device includes a processing unit and a transceiver unit; the transceiver unit is used to obtain M first signals, the first signal includes the output signal of the PA, M is an integer greater than 2; the processing unit is used to determine the Mth A second signal after signal combination; the processing unit is further configured to output a third signal based on the second signal, and the third signal is used to compensate for the nonlinear information of the M first signals.
  • the third signal includes a first sub-signal, the first sub-signal is used to compensate the first nonlinear information of the M first signals; the processing unit is based on The second signal outputting the third signal includes: the processing unit outputs the first sub-signal to a first predistorter based on the second signal, and the first predistorter is connected to the M PAs; wherein, the first predistorter The distortion device is used to input the first sub-signal and output M first processing results to the M PAs respectively, where the M first processing results are obtained by pre-distortion processing based on the first sub-signal.
  • the third signal includes M second sub-signals, and the M second sub-signals are used to compensate for the second nonlinear information of the M first signals;
  • the processing unit outputting a third signal based on the second signal includes: the processing unit outputting the M second sub-signals to M second predistorters based on the second signal, and the M second predistorters are respectively connected with the M PAs are connected; wherein, the M second predistorters are used to input the M second sub-signals respectively, and output M second processing results to the M PAs respectively, where the M second processing results They are respectively obtained by performing predistortion processing based on the second sub-signal.
  • the processing unit outputting the third signal based on the second signal includes: the processing unit outputting the third signal based on an undersampling result of the second signal.
  • the processing unit determining the combined second signal of the M first signals includes: the processing unit output signals of the M PAs respectively based on the M adjustable attenuators. After processing, the second signal is determined.
  • the M adjustable attenuators are connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module is used to configure the power coefficients of the M adjustable attenuators. Make adjustments.
  • 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 which will not be discussed here. Repeat.
  • a fourth aspect of the embodiments of the present application provides a communication device, including the signal processing device in the foregoing first aspect or any possible implementation of the first aspect.
  • the communication device is a transmitter, a sending device, a signal sending device, etc.
  • the fifth aspect of the embodiment of the present application provides a communication device, including at least one processor, the at least one processor is coupled to a memory; the memory is used to store programs or instructions; the at least one processor is used 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, or.
  • the sixth aspect of the embodiment of the present application provides a communication device, including at least one logic circuit and an input-output interface; the logic circuit and the input-output interface are used to perform the aforementioned second aspect or any of the possible implementations of the second aspect. the method described.
  • the seventh aspect of the embodiment of the present application provides a computer-readable storage medium that stores one or more computer-executable instructions.
  • the processor executes the above second aspect or any one of the second aspects. possible implementation methods.
  • the eighth aspect of the embodiment of the present application provides a computer program product (or computer program) that stores one or more computers.
  • the processor executes the above second aspect or the second aspect. any possible way to do it.
  • a ninth aspect of the embodiment of the present application provides a chip system.
  • the chip system includes at least one processor and is used to support a communication device to implement the functions involved in the above-mentioned 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 tenth aspect of the embodiments of the present application provides a communication system, which includes the communication device of the third aspect, or the communication system includes the communication device of the fourth aspect, or the communication system includes the fifth aspect.
  • Figure 1a is a schematic diagram of the communication system provided by this application.
  • Figure 1b is a schematic diagram of the communication signal involved in this application.
  • FIG. 2 is a schematic diagram of the communication method provided by this application.
  • Figure 3a is a schematic diagram of the signal processing device
  • Figure 3b is another schematic diagram of the signal processing device
  • FIG. 4 is a schematic diagram of the signal processing device provided by this application.
  • FIG. 5a is another schematic diagram of the signal processing device provided by this application.
  • FIG. 5b is another schematic diagram of the signal processing device provided by this application.
  • FIG. 5c is another schematic diagram of the signal processing device provided by this application.
  • FIG. 5d is another schematic diagram of the signal processing device provided by this application.
  • FIG. 5e is another schematic diagram of the signal processing device provided by this application.
  • FIG. 5f is another schematic diagram of the signal processing device provided by this application.
  • Figure 5g is another schematic diagram of the signal processing device provided by this application.
  • Figure 5h is another schematic diagram of the signal processing device provided by this application.
  • FIG. 6 is a schematic diagram of the signal processing method provided by this application.
  • FIG. 7 is a schematic diagram of the communication device provided by this application.
  • FIG. 8 is another schematic diagram of the communication device provided by this application.
  • FIG. 9 is another schematic diagram of the communication device provided by this application.
  • Figure 10 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 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.
  • the embodiments of this application are not limited.
  • the network equipment may also include core network equipment.
  • the core network equipment may include, for example, access and mobility management function (access and mobility management function, AMF), user plane function (user plane function, UPF) or session management function (session management function). function, SMF), etc.
  • 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.
  • 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.
  • FIG. 1a is a schematic diagram of the communication system in this application.
  • a network device 101 and six terminal devices are shown as an example.
  • the six terminal devices are terminal device 1, terminal device 2, terminal device 3, terminal device 4, terminal device 5, terminal device 6, etc. .
  • terminal device 1 is a smart teacup
  • terminal device 2 is a smart air conditioner
  • terminal device 3 is a smart gas pump
  • terminal device 4 is a vehicle
  • terminal device 5 is a mobile phone
  • terminal device 6 is The printer is used as an example.
  • the signal sending device (or called the transmitting end, the transmitting end device) can be a network device, and the signal receiving device (or called the receiving end, the receiving end device) can be the terminal device; or , the signal sending device may be a terminal device, and the signal receiving device may be a network device; or both the signal sending device and the signal receiving device may be network devices; or both the signal sending device and the signal receiving device may be terminal devices.
  • the communication system includes at least one network device and/or at least one terminal device.
  • PAPR peak-to-average power ratio
  • PAPR can be determined through the mathematical relationship between peak power (Peak Power) and average power (Average Power). For example, in a time domain signal, PAPR can be determined as follows:
  • the power amplifier is an important component of communication devices. Signals with high PAPR can easily affect the signal processing performance of the PA. For example, it may cause the error vector magnitude of the signal processed by the PA. , EVM) deteriorates, increases the bit error rate of the receiver, causes adjacent channel interference, etc. The occurrence of these situations will cause the signal transmission efficiency of the communication device including the PA to decrease and affect the communication quality.
  • the power backoff phenomenon caused by higher PAPR can be realized in the manner shown in Figure 1b.
  • the straight line represents the ideal transfer function (ideal transfer function), and the curve represents the practical transfer function (practical transfer function).
  • the output power (out power) corresponding to the ideal transfer function and the actual transfer function are basically consistent, and the values are all within Near P in 1 , there is no power regression (or the power regression is not obvious).
  • the output power corresponding to the ideal transfer function is P out 2
  • the output power corresponding to the actual transfer function is P′ out 2 . It can be seen that the difference between the two It will increase with the increase of input power, resulting in power backoff, which will affect the reduction of transmit power, thus causing the signal transmission distance to become smaller.
  • Figure 2 is a schematic diagram of the application scenario of the present application, in which the transmitter can be a network device or a terminal device, and the receiver can be a network device or a terminal device.
  • the transmitter can include the following modules:
  • the encoding module (not shown in the figure) is mainly used to complete the encoding, interleaving and other functions of the information bits to be transmitted (recorded as Tx bit);
  • the transmitter baseband processing module is mainly used to complete information modulation, framing, filtering and shaping, pre-distortion correction and other processing;
  • Pre-distortion (PD) module is mainly used for linear pre-correction of power amplifiers
  • Digital to analog converter (DAC) module mainly used for conversion of digital signals and analog signals
  • the radio frequency module in the transmission mainly completes functions such as modulating the baseband signal to the radio frequency signal and signal filtering;
  • Power amplifier is mainly used to amplify the power of signals
  • Wireless channel mainly refers to the wireless transmission of electromagnetic waves in media such as atmosphere, vacuum, water, etc.
  • Wired channels mainly refer to transmission in optical fiber, copper wire and other media
  • the receiver can include the following modules:
  • the receiving RF module is mainly used to down-convert the received RF signal to a low-frequency signal or baseband signal;
  • ADC Analog to digital converter
  • the receiving baseband unit module is mainly used to complete the recovery of the received baseband signal, including synchronization, equalization, decoding and other processing.
  • the solution provided by this application mainly focuses on reducing the nonlinear characteristics of the PA on the signal processing performance of the PA. impact in order to improve communication quality.
  • the solution provided by this application can be applied to the improvement of the PD module processing process in Figure 2.
  • the PD module can be called digital pre-distortion (DPD).
  • the communication device where the PD module is located can be a transmitter or a receiver, and the communication device includes M PAs and the signals input to the M PAs respectively are denoted as x1, x2... xM, the signals processed by M PAs are output through M antennas (i.e., antenna_1, antenna_2...antenna_M in the figure) as an example, M is an integer greater than or equal to 2.
  • FIG. 3a A possible implementation of a PD module is shown in Figure 3a.
  • M PAs i.e., PA_1, PA_2... in the figure
  • the signal processing of PA_M is improved.
  • the signal processing device in Figure 3a includes a coefficient solving algorithm module, which is used to obtain the output signals of M PAs, and perform coefficient solving based on the output signals of the M PAs to obtain M pieces of feedback information.
  • M pieces of feedback information are sent to M PDs (i.e., PD_1, PD_2...PD_M in the figure), so that the M PDs perform pre-distortion processing on the PAs on each link based on each feedback information to improve the performance of the M PAs. Signal processing performance.
  • FIG. 3b A possible implementation method of a PD module is shown in Figure 3b.
  • M PAs i.e., PA_1, PA_2... in the figure
  • the signal processing of PA_M is improved.
  • the signal processing device in Figure 3b includes a coefficient solution algorithm module.
  • the coefficient solution algorithm module obtains the output signal of one of the M PAs at a certain moment, and based on that one After coefficient calculation is performed on the output signal of the PA to obtain feedback information, the feedback information is sent to a corresponding PD among the M PDs (i.e., PD_1, PD_2...PD_M in the figure), so that the PD is based on the feedback
  • the information performs pre-distortion processing on the PA on the link. Moreover, this processing process is repeated M times to improve the signal processing performance of the M PAs respectively.
  • the time division multiplexing single-channel feedback structure switched by the time division switch reduces the complexity of the feedback branch to a certain extent.
  • the setting of the time division switch will cause the problem of crosstalk isolation between multiple input signals, which will always cause the obtained feedback signal to be interfered by other branches, thereby deteriorating the performance of digital predistortion.
  • the high-speed switching of the time division switch requires a high-precision synchronization mechanism with multiple baseband modules, which is complex to implement.
  • FIG. 4 it is a schematic diagram of a signal processing device provided by this application.
  • the signal processing device is located in a communication device.
  • the communication device can be a terminal device or a network device.
  • the signal processing device at least includes a signal processor and a combiner.
  • the combiner is used to input M channels of first signals and output a combined second signal of the M channels of first signals, wherein the M channels of first signals respectively include M PA signals.
  • Output signal, M is an integer greater than 2.
  • the signal processor is configured to output a third signal based on the second signal, where the third signal is used to compensate for the nonlinear information of the M first signals.
  • the combiner in the signal processing device is used to input M channels of first signals and output a combined second signal of the M channels of first signals; in addition, the signal processor in the signal processing device is used to A third signal for compensating the nonlinear information of the M first signals is output based on the second signal.
  • the third signal obtained by the signal processing device can be used to perform pre-distortion compensation on the nonlinear information of the M first signals, reducing the impact of the nonlinear characteristics of the PA on the signal processing performance of the PA, in order to improve communication quality.
  • the signal processing device may not include the M PAs as an example, that is, the signal processing device and the M PAs are both independently provided parts of the communication device.
  • the signal processing device may include the M PAs, which is not limited here.
  • the PD module connected to the signal processing device shown in Figure 4 will be exemplarily described below in conjunction with more implementation examples.
  • the third signal output by the signal processing device includes a first sub-signal, which is used to compensate for the first nonlinear information of the M first signals.
  • the third signal obtained by the signal processor in the signal processing device includes the first sub-signal used to compensate the first nonlinear information of the M first signals.
  • the first nonlinear information may include the same nonlinear information corresponding to the M first signals, in order to perform predistortion compensation on the first nonlinear information of the M first signals through the first sub-signal, thereby reducing M The influence of the same nonlinear characteristics of two PAs on the signal processing performance of the PA.
  • the first nonlinear information of the M first signals can be called the common nonlinear information of the M first signals, the same nonlinear information of the M first signals, and the nonlinear information of the M first signals. Identical parts, common parts in the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the signal processor is specifically configured to output the first sub-signal to a first predistorter, and the first predistorter is connected to the M PAs.
  • the third signal obtained by the signal processor in the signal processing device includes the first sub-signal for compensating the first nonlinear information of the M first signals, and the signal processor can also provide The first predistorter connected to the M PAs outputs the first sub-signal, in order to perform pre-distortion compensation on the M PAs based on the first sub-signal through the first predistorter.
  • the example shown in FIG. 4 does not include the first predistorter, that is, the signal processing device and the first predistorter are both independently arranged parts of the communication device.
  • the signal processing device in the example shown in FIG. 4 includes the first predistorter, which is not limited here.
  • N is an integer greater than or equal to 1.
  • N is an integer greater than or equal to 1.
  • the value of N can be the same as the value of M, that is, through N predistorters (denoted as the first predistorter_1 in Figure 5a, The first predistorter_2...the first predistorter_N) respectively perform predistortion compensation on the M PAs based on N first sub-signals.
  • the value of N is 1, that is, one predistorter (denoted as the first predistorter in Figure 5b) is used based on the first sub-signal pair.
  • M PAs perform predistortion compensation.
  • the value of N can also be greater than 1 and less than M.
  • N predistorters are used to perform predistortion compensation on N PAs among the M PAs based on the N first sub-signals, and The remaining M-N PAs do not require predistortion compensation to reduce processing overhead.
  • the nonlinear information of the M-N PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the first nonlinear information of the M-N PAs performs predistortion compensation in other ways.
  • predistortion compensation is performed on M PAs based on N first sub-signals through N predistorters, where N predistorters At least one predistorter in the processor performs predistortion compensation on two or more PAs based on the first sub-signal.
  • the first predistorter is used to input the first sub-signal and output M first processing results to the M PAs respectively, wherein the M first processing results are based on the The first sub-signal is obtained through pre-distortion processing.
  • the signal processor in the signal processing device outputs the first sub-signal to the first pre-distorter
  • the first pre-distorter is used to perform pre-distortion processing based on the first sub-signal to obtain M first processing results and M first processing results are output to the M PAs respectively, so that the M PAs respectively perform predistortion compensation on the first nonlinear information based on the M first processing results.
  • the third signal output by the signal processing device includes M second sub-signals, and the M second sub-signals are used for the second non-transformation of the M first signals.
  • Linear information is compensated.
  • the third signal obtained by the signal processor in the signal processing device includes a second sub-signal used to compensate for the second nonlinear information of the M first signals.
  • the second nonlinear information may include different nonlinear information corresponding to M channels of first signals, in order to perform predistortion compensation on the second nonlinear information of the M channels of first signals through the M second sub-signals.
  • the second nonlinear information of the M first signals can be called non-shared nonlinear information of the M first signals, different nonlinear information of the M first signals, and nonlinear information of the M first signals. Different parts of the information, non-shared parts of the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the number of second sub-signals included in the third signal is recorded as K, where K is an integer greater than or equal to 1, where K may be less than M. That is, predistortion compensation is performed on K PAs among the M PAs through the K first sub-signals, while the remaining M-K PAs do not require predistortion compensation to reduce processing overhead.
  • the nonlinear information of the M-K PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the second nonlinear information of the M-K PAs performs predistortion compensation through other methods.
  • the number K of second sub-signals contained in the third signal is the same as M
  • the number K of second predistorters is also the same as M
  • the implementation process can be implemented as shown in Figure 5c, That is, the number K of second predistorters connected to the signal processor is equal to M.
  • the second predistorters can be recorded as second predistortor_1, second predistorter_2... in Figure 5c.
  • First predistorter_K when the number K of second sub-signals contained in the third signal is the same as M, the number K of second predistorters is also the same as M, and the implementation process can be implemented as shown in Figure 5c, That is, the number K of second predistorters connected to the signal processor is equal to M.
  • the second predistorters can be recorded as second predistortor_1, second predistorter_2... in Figure 5c.
  • First predistorter_K is the same as M
  • the number of second predistorters is 1, and the implementation process can be implemented in the manner shown in Figure 5d, that is, with the signal processor The number of connected second predistorters is 1, and the second predistorter can be recorded as the second predistorter in Figure 5d.
  • the signal processor is specifically configured to output the M second sub-signals to M second predistorters, and the M second predistorters are respectively connected to the M PAs.
  • the third signal obtained by the signal processor in the signal processing device includes M second sub-signals used to compensate for the second nonlinear information of the M first signals, and the signal processor can also The M second sub-signals are respectively output to the M second pre-distorters connected to the M PAs, in order to pre-distort the M PAs based on the M second sub-signals through the M second pre-distorters. compensate.
  • the signal processing device includes the second predistorter.
  • the signal processing device does not include the second predistorter, that is, the signal processing device and the second predistorter are both independently arranged parts of the communication device.
  • the M second predistorters are used to respectively input the M second sub-signals and output M second processing results to the M PAs respectively, where the M second The processing results are respectively obtained by performing pre-distortion processing based on the second sub-signal.
  • the M second pre-distorters are used to perform pre-distortion processing based on the second sub-signals to obtain M second processing results and output M second processing results to M PAs respectively, so that the M PAs respectively perform predistortion compensation on the second nonlinear information based on the M second processing results.
  • the number of the second pre-distortion processors may be K to reduce processing overhead.
  • the signal processing device may include a first predistorter and not include a second predistorter, or the signal processing device may include a second predistorter. and does not include a first predistorter, or the signal processing device may include a first predistorter and the signal processing device may include a second predistorter, which is not limited here.
  • the signal processing device may include a first predistorter and the signal processing device may include a second predistorter
  • the connection between the first predistorter, the second predistorter and the PA is not limited.
  • the first predistorter may be connected to the PA through the second predistorter
  • the second predistorter may be connected to the PA through the first predistorter, or other implementation methods, which will not be described again here.
  • the second predistorter and the first predistorter are implemented by the same predistorter, or the second predistorter is different from the first predistorter.
  • the second predistorter is different from the first predistorter, the number of first predistorters is 1 and the number of second predistorters K and M are equal, the implementation process can be as shown in Figure 5e Or implemented as shown in Figure 5f.
  • the first predistorter is connected to M PAs through K second predistorters.
  • K second predistorters are connected to M PAs through the first predistorters.
  • the signal processing device may further include a sampler; the combiner is connected to the signal processor through the sampler. Specifically, the combiner in the signal processing device is connected to the signal processor through the sampler, so that the signal of the combiner is input to the signal processor for further processing after being sampled by the sampler.
  • the signal processing device includes the sampler.
  • the signal processing device does not include the sampler, that is, the signal processing device and the sampler are both independently provided parts of the communication device.
  • the sampler is configured to input a fourth signal obtained based on the second signal, and output an undersampling result of the fourth signal to the signal processor.
  • the sampler is used to input the fourth signal obtained based on the second signal and output the fourth signal to the signal processor.
  • the undersampling result of the signal enables the signal processor to determine a third signal for compensating the nonlinear information of the M first signals based on the undersampling result, so as to reduce the number of samples processed by the signal processor and reduce the computational complexity.
  • the signal processor is specifically configured to output the third signal based on the undersampling result of the fourth signal. Therefore, when the combiner in the signal processing device is connected to the signal processor through the sampler, the signal processor can specifically output the third signal based on the undersampling result of the fourth signal to reduce computational complexity.
  • the signal processing device can also be implemented in the manner shown in Figure 5h.
  • the input signal "x1, x2...xM" as a baseband signal as an example, between the combiner and sampler of the signal processing device, ADC, filters, oscillators, etc. can also be included.
  • the ADC is mainly used for conversion of analog signals and digital signals, so that the sampler can sample based on digital signals and simplify operations.
  • this filter is mainly used to filter some frequency bands outside the input signal of interest.
  • the oscillator is mainly used as an energy conversion device for converting DC power into AC power with a certain frequency.
  • the M first signals input to the combiner each further include input signals of M PAs
  • the signal processor is further configured to A fifth signal is output to the third predistorter (or modulator) based on the input signals of the M PAs, and the fifth signal is used to compensate the IQ error of the modulator.
  • the signal processor is also configured to output to the third predistorter (or modulator) based on the input signals of the M PAs for compensating the IQ error of the modulator.
  • the fifth signal is used to facilitate the third predistorter (or modulator) to subsequently perform signal compensation processing based on the fifth signal, thereby further improving the processing performance of predistortion compensation based on the third signal.
  • the fifth signal includes IQ imbalance parameters and/or compensation model parameters.
  • the signal processing device includes the third predistorter (or modulator).
  • the signal processing device does not include the third predistorter (or modulator), that is, the signal processing device and the third predistorter (or modulator) are both independently provided parts of the communication device.
  • the third predistorter is the first predistorter, or the third predistorter is the second predistorter, or the third predistorter is different from the first predistorter and the third predistorter Different from the second predistorter.
  • the combiner is connected to the M PAs through M adjustable attenuators, and the M adjustable attenuators are respectively used to process the output signals of the M PAs.
  • the M first signals output by the combiners of M PA outputs can be processed by M adjustable attenuators respectively and then input to the combiner for combining processing, so that the combiner obtains an attenuated signal. , reduce processing complexity and improve the accuracy of subsequent calculations.
  • the signal processing device includes the adjustable attenuator.
  • the signal processing device does not include the adjustable attenuator, that is, the signal processing device and the adjustable attenuator are independently provided parts of the communication device.
  • the M adjustable attenuators are respectively used to process the input signals of the M PAs.
  • the M adjustable attenuators can also be used to process the input signals of the M PAs respectively, so as to reduce the third The processing complexity of the predistorter (or modulator).
  • the M adjustable attenuators are connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module is used to adjust the power configuration coefficients of the M adjustable attenuators.
  • the M adjustable attenuators can also be connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module It is used to adjust the power configuration coefficients of the M adjustable attenuators to adjust the power configuration coefficients of the M first signals input to the combiner.
  • the signal processing device includes the adjustable power coefficient configuration module.
  • the signal processing device does not include the adjustable power coefficient configuration module, that is, the signal processing device and the adjustable power coefficient configuration module are both independently provided parts of the communication device.
  • the communication device may also include one or more switches (switches).
  • the one or more switches are used to control input of the input signal of the PA or the output signal of the PA to an optional Adjust the attenuator so that the signal processor performs the aforementioned implementation process of determining the fifth signal when acquiring the input signal of the PA, and causes the signal processor to perform the aforementioned implementation process of determining the third signal when obtaining the output signal of the PA. Implementation process.
  • the communication device may also include at least one of the following components:
  • DAC is mainly used for conversion of digital signals to analog signals.
  • Modulator (modulation, Mod) is mainly used for spectrum shifting of signals.
  • Couplers are mainly used for signal power distribution.
  • Figure 6 is a schematic diagram of the signal processing method provided by this application.
  • the method includes the following steps. It should be noted that the method shown in Figure 6 is executed by the communication device, or the method is executed by some components in the communication device (such as the signal processing device mentioned in any of the previous embodiments, or the processor, chip or chip system, etc.), or the method can also be implemented by a functional logic module or software that can implement the signal processing method.
  • the communication method is described by taking the example that the communication method is executed by a signal processing device.
  • the signal processing device acquires M first signals in step S601.
  • the first signals include the output signals of the PA, and M is an integer greater than 2.
  • the signal processing device determines the combined second signal of the M channels of first signals in step S602.
  • the signal processing device outputs a third signal based on the second signal determined in step S602.
  • the third signal is used to compensate for the nonlinear information of the M first signals.
  • the signal processing device After the signal processing device obtains the M first signals including the output signal of the PA in step S601, the signal processing device determines the combined second signal of the M first signals in step S602, and , the signal processing device outputs a third signal for compensating the nonlinear information of the M first signals in step S603.
  • the third signal obtained by the signal processing device can be used to perform pre-distortion compensation on the nonlinear information of the M first signals, reducing the impact of the nonlinear characteristics of the PA on the signal processing performance of the PA, in order to improve communication quality.
  • the third signal output by the signal processing device in step S603 includes a first sub-signal, which is used to compensate for the first nonlinear information of the M first signals;
  • the process of the signal processing device outputting the third signal based on the second signal in step S603 includes: the signal processing device outputs the first sub-signal to the first predistorter based on the second signal, and the first predistortion The device is connected to the M PAs; wherein the first predistorter is used to input the first sub-signal and output M first processing results to the M PAs respectively, wherein the M first processing results are based on The first sub-signal is obtained through pre-distortion processing.
  • the third signal obtained by the signal processing device includes the first sub-signal used to compensate the first nonlinear information of the M first signals.
  • the first nonlinear information may include the same nonlinear information corresponding to the M first signals, in order to perform predistortion compensation on the first nonlinear information of the M first signals through the first sub-signal, thereby reducing M The influence of the same nonlinear characteristics of two PAs on the signal processing performance of the PA.
  • the first nonlinear information of the M first signals can be called the common nonlinear information of the M first signals, the same nonlinear information of the M first signals, and the nonlinear information of the M first signals. Identical parts, common parts in the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the signal processing device includes the first predistorter.
  • the signal processing device does not include the first predistorter, that is, the signal processing device and the first predistorter are both independently arranged parts of the communication device.
  • N is an integer greater than or equal to 1.
  • the value of N may be the same as the value of M, that is, predistortion compensation is performed on M PAs based on N first sub-signals through N predistorters.
  • the value of N is 1, that is, one predistorter is used to perform predistortion compensation on M PAs based on the first sub-signal.
  • the value of N is greater than 1 and less than M, that is, N predistorters are used to perform predistortion compensation on N PAs among the M PAs based on the N first sub-signals, and the remaining M-N PAs do not need to be predistorted. Distortion compensation to reduce processing overhead.
  • the nonlinear information of the M-N PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the first nonlinear information of the M-N PAs performs predistortion compensation in other ways.
  • the value of N is greater than 1 and less than M, that is, predistortion compensation is performed on M PAs based on N first sub-signals through N predistorters, where at least one of the N predistorters predistorts.
  • the distorter performs pre-distortion compensation on two or more PAs based on the first sub-signal.
  • the third signal output by the signal processing device in step S603 includes M second sub-signals, and the M second sub-signals are used for the second nonlinearity of the M first signals.
  • Information is compensated; the process of the signal processing device outputting a third signal based on the second signal includes: the signal processing device outputs the M second sub-signals to M second predistorters based on the second signal, and the M second sub-signals are The second predistorters are respectively connected to the M PAs; wherein the M second predistorters are used to respectively input the M second sub-signals and output M second processing results to the M PAs respectively, where , the M second processing results are respectively obtained by performing predistortion processing based on the second sub-signal.
  • the third signal obtained by the signal processing device includes a second sub-signal used to compensate for the second nonlinear information of the M first signals.
  • the second nonlinear information may include different nonlinear information corresponding to M channels of first signals, in order to perform predistortion compensation on the second nonlinear information of the M channels of first signals through the M second sub-signals.
  • the second nonlinear information of the M first signals can be called non-shared nonlinear information of the M first signals, different nonlinear information of the M first signals, and nonlinear information of the M first signals. Different parts of the information, non-shared parts of the nonlinear information of the M first signals, or other descriptions are not limited here.
  • the number of second sub-signals included in the third signal is recorded as K, where K is an integer greater than or equal to 1, where K may be less than M. That is, predistortion compensation is performed on K PAs among the M PAs through the K first sub-signals, while the remaining M-K PAs do not require predistortion compensation to reduce processing overhead.
  • the nonlinear information of the M-K PAs indicates that the nonlinear characteristics of the M-N PAs have little impact on signal processing performance, or the second nonlinear information of the M-K PAs performs predistortion compensation through other methods.
  • the process of the signal processing device outputting a third signal based on the second signal includes: the signal processing device outputting the third signal based on an undersampling result of the second signal.
  • the signal processing device can output the third signal based on the undersampling result of the second signal, that is, the signal processing device can determine based on the undersampling result.
  • the third signal is used to compensate the nonlinear information of the M first signals to reduce the number of samples processed and reduce the computational complexity.
  • the signal processing device determines the combined second signal of the M first signals including: the signal processing device separately processes the output signals of the M PAs based on M adjustable attenuators. Afterwards, the second signal is determined.
  • the M first signals output by the combiners of M PA outputs can be processed by M adjustable attenuators respectively and then input to the combiner for combining processing, so that the combiner obtains an attenuated signal. , reduce processing complexity and improve the accuracy of subsequent calculations.
  • the M adjustable attenuators are connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module is used to adjust the power configuration coefficients of the M adjustable attenuators.
  • the M adjustable attenuators can also be connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module It is used to adjust the power configuration coefficients of the M adjustable attenuators to adjust the power configuration coefficients of the M first signals input to the combiner.
  • the signal processing device can also refer to the process performed by the signal processing device in any of the foregoing embodiments and achieve corresponding technical effects, which will not be described again here.
  • the present application is introduced from the perspective of the method above, and the communication device provided by the present application is described below.
  • an embodiment of the present application provides a communication device 700.
  • the communication device 700 can implement the functions of the communication device in the above method embodiment, and therefore can also achieve the beneficial effects of the above method embodiment.
  • the communication device 700 may be a terminal device or a network device, or may be an integrated circuit or component within the terminal device or the network device, such as a chip.
  • the device 700 includes a processing unit 701 and a transceiver unit 702; the transceiver unit 702 is used to obtain M first signals, where the first signal includes the output signal of the PA, and M is an integer greater than 2;
  • the processing unit 701 is used to determine the second signal after combining the M channels of first signals; the processing unit 701 is also used to output a third signal based on the second signal, and the third signal is used to combine the M channels of first signals. to compensate for the nonlinear information.
  • the third signal includes a first sub-signal, the first sub-signal is used to compensate the first nonlinear information of the M first signals; the processing unit 701 is based on the second
  • the signal outputting the third signal includes: the processing unit 701 outputs the first sub-signal to a first predistorter based on the second signal, and the first predistorter is connected to the M PAs; wherein the first predistorter uses The first sub-signal is input, and M first processing results are output to the M PAs respectively, wherein the M first processing results are obtained by pre-distortion processing based on the first sub-signal.
  • the third signal includes M second sub-signals, and the M second sub-signals are used to compensate for the second nonlinear information of the M first signals;
  • the processing unit 701 Outputting a third signal based on the second signal includes: the processing unit 701 outputs the M second sub-signals to M second predistorters based on the second signal, and the M second predistorters are respectively connected with the M PA connection; wherein, the M second predistorters are used to input the M second sub-signals respectively, and output M second processing results to the M PAs respectively, where the M second processing results are respectively It is obtained by performing predistortion processing based on the second sub-signal.
  • the processing unit 701 outputting the third signal based on the second signal includes: the processing unit 701 outputting the third signal based on the undersampling result of the second signal.
  • the processing unit 701 determines the combined second signal of the M first signals including: the processing unit 701 processes the output signals of the M PAs based on the M adjustable attenuators respectively. Afterwards, the second signal is determined.
  • the M adjustable attenuators are connected to an adjustable power coefficient configuration module, and the adjustable power coefficient configuration module is used to adjust the power configuration coefficients of the M adjustable attenuators.
  • FIG. 8 is another schematic structural diagram of a communication device 800 provided in this application.
  • the communication device 800 at least includes an input and output interface 802 .
  • the communication device 800 may be a chip or an integrated circuit.
  • the communication device also includes a logic circuit 801.
  • the transceiver unit 702 shown in FIG. 7 may be a communication interface, and the communication interface may be the input-output interface 802 in FIG. 8 .
  • the input-output interface 802 may include an input interface and an output interface.
  • the communication interface may also be a transceiver circuit, and the transceiver circuit may include an input interface circuit and an output interface circuit.
  • the input and output interface 802 is used to obtain M first signals, and the first signal includes the output of the PA.
  • M is an integer greater than 2;
  • the logic circuit 801 is used to determine the second signal after combining the M first signals;
  • the logic circuit 801 is also used to output a third signal based on the second signal, the third signal It is used to compensate the nonlinear information of the M first signals.
  • the logic circuit 801 and the input-output interface 802 can also perform other steps performed by the communication device in any embodiment and achieve corresponding beneficial effects, which will not be described again here.
  • the processing unit 701 shown in FIG. 7 may be the logic circuit 801 in FIG. 8 .
  • the logic circuit 801 may be a processing device, and the functions of the processing device may be partially or fully implemented through software. Among them, the functions of the processing device can be partially or fully implemented through software.
  • the processing device may include a memory and a processor, wherein the memory is used to store a computer program, and the processor reads and executes the computer program stored in the memory to perform corresponding processing and/or steps in any method embodiment. .
  • the processing means may comprise only a processor.
  • the memory for storing computer programs is located outside the processing device, and the processor is connected to the memory through circuits/wires to read and execute the computer programs stored in the memory.
  • the memory and processor can be integrated together, or they can also be physically independent of each other.
  • the processing device may be one or more chips, or one or more integrated circuits.
  • the processing device may be one or more field-programmable gate arrays (FPGA), application specific integrated circuit (ASIC), system on chip (SoC), central processing unit (central processor unit, CPU), network processor (network processor, NP), digital signal processing circuit (digital signal processor, DSP), microcontroller unit (micro controller unit, MCU), programmable logic device, PLD) or other integrated chips, or any combination of the above chips or processors, etc.
  • FPGA field-programmable gate arrays
  • ASIC application specific integrated circuit
  • SoC system on chip
  • central processing unit central processor unit, CPU
  • network processor network processor
  • NP network processor
  • DSP digital signal processing circuit
  • microcontroller unit microcontroller unit
  • microcontroller unit micro controller unit, MCU
  • PLD programmable logic device
  • FIG. 9 is a communication device 900 involved in the above embodiment provided for an embodiment of the present application.
  • the communication device 900 may specifically be a communication device serving as a terminal device in the above embodiment.
  • the example shown in FIG. 9 is a terminal.
  • the device is implemented through a terminal device (or a component in the terminal device).
  • the communication device 900 may include but is not limited to at least one processor 901 and a communication port 902.
  • the device may also include at least one of a memory 903 and a bus 904.
  • the at least one processor 901 is used to control the actions of the communication device 900.
  • the processor 901 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 900 shown in Figure 9 can be specifically used to implement the steps implemented by the terminal device in the foregoing method embodiment, and to achieve the corresponding technical effects of the terminal device.
  • the specific implementation methods of the communication device shown in Figure 9 are all Reference may be made to the descriptions in the foregoing method embodiments, which will not be described again here.
  • FIG. 10 is a schematic structural diagram of the communication device 1000 involved in the above embodiment provided by the embodiment of the present application.
  • the communication device 1000 can specifically be the communication device as a network device in the above embodiment, as shown in FIG. 10
  • An example is that the network device is implemented by a network device (or a component in the network device), wherein the structure of the communication device may refer to the structure shown in FIG. 10 .
  • the communication device 1000 includes at least one processor 1011 and at least one network interface 1014. Further optionally, the communication device further includes at least one memory 1012, at least one transceiver 1013 and one or more antennas 1015.
  • the processor 1011, the memory 1012, the transceiver 1013 and the network interface 1014 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 1015 is connected to transceiver 1013.
  • the network interface 1014 is used to enable the communication device to communicate with other communication devices through communication links.
  • the network interface 1014 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 1011 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 process communication protocols and communication data.
  • the central processing unit is mainly used to control the entire terminal device, execute software programs, and process data of the software programs.
  • the processor 1011 in Figure 10 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 1012 may exist independently and be connected to the processor 1011.
  • the memory 1012 can be integrated with the processor 1011, for example, integrated into a chip.
  • the memory 1012 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 1011.
  • the various computer program codes executed can also be regarded as the driver of the processor 1011.
  • Figure 10 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 1013 may be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and the transceiver 1013 may be connected to the antenna 1015.
  • Transceiver 1013 includes a transmitter Tx and a receiver Rx.
  • one or more antennas 1015 can receive radio frequency signals
  • the receiver Rx of the transceiver 1013 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 1011, so that the processor 1011 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 1013 is also used to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 1011, and convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and pass it through a Or multiple antennas 1015 transmit the radio frequency signal.
  • the receiver Rx can selectively perform one or more stages 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 up-mixing 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 up-mixing 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.
  • the transceiver 1013 may also be called a transceiver unit 702, a transceiver, a transceiver device, etc.
  • the device used to implement the receiving function in the transceiver unit 702 can be regarded as a receiving unit
  • the device used to implement the transmitting function in the transceiver unit 702 can be regarded as a transmitting unit, that is, the transceiver unit 702 includes a receiving unit and a transmitting unit
  • the receiving unit can also 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 1000 shown in Figure 10 can be used to implement the steps implemented by the network equipment in the foregoing method embodiments, and to achieve the corresponding technical effects of the network equipment.
  • the specific implementation of the communication device 1000 shown in Figure 10 is, Reference may be made to the descriptions in the foregoing method embodiments, and details will not be repeated here.
  • Embodiments of the present application also provide a computer-readable storage medium that stores one or more computer-executable instructions.
  • the processor executes the possible implementation of the communication device in the foregoing embodiments. Methods.
  • Embodiments of the present application also provide a computer program product that stores one or more computers.
  • the processor executes the method of the possible implementation of the communication device.
  • Embodiments of the present application also provide a chip system, which includes at least one processor and is used to support the communication device to implement the functions involved in the possible implementation of the communication 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 communication device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the communication device may specifically be the communication device in the foregoing method embodiment.
  • An embodiment of the present application also provides a communication system, which includes the communication device 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 can be implemented in the form of hardware or 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

La présente invention concerne un appareil et un procédé de traitement de signal, et un dispositif associé à utiliser pour réduire l'influence de caractéristiques non linéaires d'amplificateurs de puissance sur les performances de traitement de signal des amplificateurs de puissance en vue d'améliorer la qualité des communications. De plus, dans l'appareil de traitement de signal, la mise en œuvre d'une combinaison de M premiers signaux au moyen d'un combinateur peut réduire les coûts et la consommation d'énergie, et réduire la complexité d'une pré-distortion non linéaire. L'appareil de traitement de signal comprend le combinateur, utilisé pour entrer les M premiers signaux et délivrer en sortie un deuxième signal obtenu après la combinaison des M premiers signaux, les M premiers signaux étant respectivement des signaux de sortie de M amplificateurs de puissance, et M étant un entier supérieur à 2. L'appareil de traitement de signal comprend en outre un processeur de signal, utilisé pour délivrer en sortie un troisième signal sur la base du deuxième signal, le troisième signal étant utilisé pour compenser des informations non linéaires des M premiers signaux.
PCT/CN2022/113502 2022-08-19 2022-08-19 Appareil et procédé de traitement de signal, et dispositif associé WO2024036588A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101320980A (zh) * 2007-12-27 2008-12-10 华为技术有限公司 一种发射机及信号传输方法
CN101860330A (zh) * 2010-04-14 2010-10-13 华为技术有限公司 放大单元、功率放大器和发信机
WO2015176077A2 (fr) * 2014-05-13 2015-11-19 Skyworks Solutions, Inc. Systèmes et procédés liés à des amplificateurs de puissance à large bande linéaires et efficaces
US11171613B1 (en) * 2020-06-22 2021-11-09 Mixcomm, Inc. Methods and apparatus for using signal pre-distortion with individual power amplifier (PA) control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101320980A (zh) * 2007-12-27 2008-12-10 华为技术有限公司 一种发射机及信号传输方法
CN101860330A (zh) * 2010-04-14 2010-10-13 华为技术有限公司 放大单元、功率放大器和发信机
WO2015176077A2 (fr) * 2014-05-13 2015-11-19 Skyworks Solutions, Inc. Systèmes et procédés liés à des amplificateurs de puissance à large bande linéaires et efficaces
US11171613B1 (en) * 2020-06-22 2021-11-09 Mixcomm, Inc. Methods and apparatus for using signal pre-distortion with individual power amplifier (PA) control

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