WO2017008542A1 - 同时同频全双工终端和系统 - Google Patents

同时同频全双工终端和系统 Download PDF

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Publication number
WO2017008542A1
WO2017008542A1 PCT/CN2016/078644 CN2016078644W WO2017008542A1 WO 2017008542 A1 WO2017008542 A1 WO 2017008542A1 CN 2016078644 W CN2016078644 W CN 2016078644W WO 2017008542 A1 WO2017008542 A1 WO 2017008542A1
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WIPO (PCT)
Prior art keywords
signal
controllable
phase
radio frequency
simultaneous
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Ceased
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PCT/CN2016/078644
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English (en)
French (fr)
Inventor
赵士青
郭爱平
胡胜钢
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Huizhou TCL Mobile Communication Co Ltd
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Huizhou TCL Mobile Communication Co Ltd
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Priority to US15/316,961 priority Critical patent/US10291381B2/en
Publication of WO2017008542A1 publication Critical patent/WO2017008542A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a simultaneous co-frequency full duplex terminal and system.
  • the same-frequency full-duplex technology is a potential key technology for the next-generation communication 5G, which means simultaneous transmission and simultaneous reception using the same frequency at the same time.
  • the same-frequency full-duplex technology can theoretically double the transmission rate under the same conditions under the same conditions, but at the same time, the same-frequency full-duplex local transmission signal will have strong self-interference to the local received signal, so it needs to be
  • the RF front end performs self-interference suppression.
  • a simultaneous co-frequency full-duplex terminal including:
  • Central processor Central processor, RF transmit receiver, power splitter, power amplifier, local transmit antenna, controllable adaptive module, signal mixer and local receive antenna;
  • the central processing unit is configured to control the radio frequency transmitting receiver to transmit a radio frequency signal, and the radio frequency signal transmitted by the radio frequency transmitting receiver is allocated into two paths by the power splitter;
  • a radio frequency signal is amplified by the power amplifier, and then transmitted by the local transmitting antenna, and the power amplifier is further configured to isolate a base station signal received by the local transmitting antenna; and another radio frequency signal is used as a sampling signal.
  • the controllable adaptive module performing amplification and phase shift processing, so that the sampling signal is equal to the amplitude of the self-interference signal received by the receiving antenna of the local device, and the phase is opposite, and is sent to the base station received by the signal mixer and the local receiving antenna.
  • the signal and the self-interference signal are mixed and transmitted to the radio frequency transmitting receiver;
  • the controllable adaptive module comprises a controllable amplifier and a controllable phase shifter
  • controllable amplifier amplifies another RF signal to make the amplitude of the amplified sampled signal and the self-interference signal equal; the controllable phase shifter performs phase shift processing on the amplified sampled signal to make the sampled signal and the sampled signal
  • the phase of the self-interference signal received by the receiving antenna is opposite.
  • the central processor is configured to control the amplification factor of the controllable amplifier in real time.
  • the central processor is further configured to control the phase of phase shifting of the controllable phase shifter in real time.
  • a simultaneous co-frequency full-duplex terminal comprising:
  • Central processor Central processor, RF transmit receiver, power splitter, power amplifier, local transmit antenna, controllable adaptive module, signal mixer and local receive antenna;
  • the central processing unit is configured to control the radio frequency transmitting receiver to transmit a radio frequency signal, and the radio frequency signal transmitted by the radio frequency transmitting receiver is allocated into two paths by the power splitter;
  • the local transmitting antenna is externally transmitted, and the other radio frequency signal is used as a sampling signal
  • the controllable adaptive module performs amplification and phase shift processing to make the sampling signal and the present
  • the self-interference signals received by the receiving antenna of the machine have the same amplitude and opposite phase, and are sent to the signal mixer and mixed with the base station signal and the self-interference signal received by the receiving antenna of the local device, and then transmitted to the radio frequency transmitting receiver.
  • the controllable adaptive module includes a controllable amplifier and a controllable phase shifter; the controllable amplifier amplifies another RF signal to make the amplified sampled signal and receive The amplitude of the self-interference signal received by the antenna is equal; the controllable phase shifter performs phase shift processing on the amplified sample signal, so that the sampling signal is opposite to the phase of the self-interference signal received by the receiving antenna.
  • the central processor is used to control the amplification factor of the controllable amplifier in real time.
  • the central processor is further configured to control the phase of the phase shift of the controllable phase shifter in real time.
  • the power amplifier is also used to isolate the base station signal received by the local transmitting antenna.
  • a simultaneous co-frequency full-duplex system includes a base station and a simultaneous co-frequency full-duplex terminal, wherein the simultaneous co-frequency full-duplex terminal includes:
  • Central processor Central processor, RF transmit receiver, power splitter, power amplifier, local transmit antenna, controllable adaptive module, signal mixer and local receive antenna;
  • the central processing unit is configured to control the radio frequency transmitting receiver to transmit a radio frequency signal, and the radio frequency signal transmitted by the radio frequency transmitting receiver is allocated into two paths by the power splitter;
  • the local transmitting antenna is externally transmitted, and the other radio frequency signal is used as a sampling signal
  • the controllable adaptive module performs amplification and phase shift processing to make the sampling signal and the present
  • the self-interference signals received by the receiving antenna of the machine have the same amplitude and opposite phase, and are sent to the signal mixer and mixed with the base station signal and the self-interference signal received by the receiving antenna of the local device, and then transmitted to the radio frequency transmitting receiver.
  • the controllable adaptive module includes a controllable amplifier and a controllable phase shifter; the controllable amplifier amplifies another RF signal to make the amplified sampled signal and The amplitude of the self-interference signal is equal; the controllable phase shifter performs phase shift processing on the amplified sample signal, so that the sampling signal is opposite to the phase of the self-interference signal received by the receiving antenna.
  • the central processor is used to control the amplification factor of the controllable amplifier in real time.
  • the central processor is further configured to control the phase of phase shifting of the controllable phase shifter in real time.
  • the power amplifier is further configured to isolate a base station signal received by the local transmit antenna.
  • the present invention provides a simultaneous co-frequency full-duplex terminal and system, which controls a radio frequency transmitting receiver to transmit a radio frequency signal through a central processor, and the radio frequency signal is distributed into two channels through a power splitter, and the radio frequency signal of one radio channel is transmitted.
  • the transmitting antenna of the local machine transmits outward, and the other RF signal is used as a sampling signal, and is amplified and phase-shifted by the controllable adaptive module, so that the amplitude of the self-interference signal received by the sampling signal and the receiving antenna of the local device is equal.
  • the phase is opposite, and the signal mixer is mixed with the base station signal and the self-interference signal received by the receiving antenna of the local device, and then transmitted to the radio frequency transmitting receiver, thereby realizing the real-time control of the sampling signal to maintain the amplitude equal to the self-interference signal.
  • the opposite phase the maximum suppression of self-interference signals, the purpose of simultaneous co-frequency full-duplex communication.
  • FIG. 1 is a structural block diagram of a simultaneous-frequency full-duplex terminal of the present invention.
  • FIG. 2 is a structural block diagram of a simultaneous co-frequency full-duplex system of the present invention
  • FIG. 3 is a schematic diagram of the principle of the same-frequency full-duplex system of the present invention.
  • the present invention provides a simultaneous co-frequency full-duplex terminal and system.
  • the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
  • the simultaneous co-frequency full-duplex terminal includes: a central processing unit 10, a radio frequency transmitting receiver 20, a power splitter 30, a power amplifier 40, a local transmitting antenna 50, and a controllable adaptive module 60.
  • the central processing unit 10 is connected to the radio frequency transmitting receiver 20 and the controllable adaptive module 60.
  • the TX (ie, transmitting) port of the radio frequency transmitting receiver 20 is connected to the power splitter 30, and an output end of the power splitter 30 passes power.
  • the amplifier 40 is coupled to the local transmit antenna 50, and the other output of the power splitter 30 is coupled to the local receive antenna 80 via a controllable adaptive module 60.
  • the central processing unit 10 is configured to control the radio frequency transmitting receiver 20 to transmit a radio frequency signal and receive an external radio frequency signal.
  • the radio frequency transmitting receiver 20 outputs a radio frequency signal through a TX port, and receives a radio frequency signal through an RX (ie, receiving) port.
  • the radio frequency signal outputted by the TX port of the radio frequency transmitting receiver 20 is distributed into two paths via the power splitter 30.
  • the local transmitting antenna 50 is used.
  • the external RF signal is sent as a sampling signal and sent to the controllable adaptive module 60 for amplification and phase shift processing.
  • the sampling signal for suppressing the self-interference signal is obtained from the RF signal output by the TX port of the radio frequency transmitting receiver 20, thereby ensuring the purity of the sampling signal and improving the self-interference suppression performance.
  • the sampled signals distributed by the power splitter 30 are subjected to amplification and phase shift processing by the controllable adaptive module 60.
  • the controllable adaptive module 60 includes a controllable amplifier 601 and a controllable phase shifter 602.
  • the controllable amplifier 601 is configured to amplify the amplitude of the sampled signal, and the controllable phase shifter 602 is used to The phase of the sampled signal is adjusted.
  • controllable amplifier 601 amplifies the sampling signal such that the amplified sampling signal and the self-interference signal (ie, the signal output by the local transmitting antenna 50 and received by the local receiving antenna 80) are equal in amplitude.
  • the controllable phase shifter 602 performs phase shift processing on the amplified sampled signal to make the phase of the sampled signal and the self-interference signal opposite, thereby maximally suppressing the self-interference signal and achieving the same-frequency full-duplex communication.
  • the sampled signal is amplified and phase-shifted by the controllable adaptive module 60, and then sent to the signal mixer 70 to mix with the self-interference signal and the base station signal received by the local receiving antenna 80.
  • the self-interference signal is completely offset from the adjusted sampled signal and then transmitted to the RF transmit receiver 20.
  • the central processing unit 10 can also be powered according to the power.
  • the signal is kept equal to the amplitude of the self-interference signal and the phase is opposite, which further improves the performance of self-interference suppression.
  • the power amplifier 40 is further configured to isolate the base station signal received by the local transmit antenna 50, further ensuring that the sampled signal is not contaminated by external noise signals, and improving the purity of the sampled signal.
  • the isolation of the local transmitting antenna 50 and the local receiving antenna 80 should be as large as possible.
  • the present invention further provides a simultaneous co-frequency full-duplex system including a base station and a simultaneous co-frequency full-duplex terminal as described above.
  • the base station is a CCFD (Co-time) Co-frequency Full-Duplex, simultaneous co-frequency full-duplex base station 100, which includes a base station receive antenna 101 and a base station transmit antenna 102. Since the same-frequency full-duplex terminal has been described in detail above, and the CCFD base station is prior art It will not be detailed here.
  • the RF transmitting receiver 20 outputs a radio frequency signal through its TX port while receiving a radio frequency signal through the RX port.
  • the transmission signal outputted through the TX port of the RF transmitting receiver 20 is split into two signals via the power splitter 30, wherein: one RF signal is output to the power amplifier 40, and is transmitted outward through the local transmitting antenna 50, and the other RF signal is used as
  • the sampled signal is amplified and phase-shifted by the controllable adaptive module 60, and sent to the signal mixer 70 and mixed with the base station signal and the self-interference signal received by the local receiving antenna 80, and then transmitted to the RF transmitting receiver 20.
  • the local transmitting antenna 50 mainly includes two signals: one is the local transmitting signal S(t), and the other is the base station signal Sn(t) received through the local transmitting antenna, where the local transmitting The signal S(t) is transmitted outward through the local transmitting antenna, and the base station transmitting signal Sn(t) received by the local transmitting antenna cannot enter the power splitter 30 due to the isolation of the power amplifier, that is, cannot be mixed with the sampling signal. It ensures that the sampled signal is not contaminated by external noise signals.
  • the two signals received by the local receiving antenna 80 are one of the transmitting signal Rw(t) of the base station, and the second is the transmitting signal Rn(t) of the local machine, that is, the total receiving signal R(t) of the receiving antenna 80 of the local machine. )for:
  • the present invention amplifies the sampling signal by the controllable amplifier 601 controlled by the central processing unit 10 in real time, so that the amplified
  • the signal amplitude is equal to the amplitude of the self-interference signal Rn(t) received by the local receiving antenna 80, and the signal is further phase-shifted by the controllable phase shifter 602 controlled by the central processing unit 10 in real time, so that the phase-shifted sampling is performed.
  • the signal Sd(t) is opposite in phase to the self-interference signal Rn(t), ie:
  • the processed sampling signal Sd(t) and the self-interference signal Rn(t) received by the local receiving antenna 80 are mixed in the signal mixer 70, and the mixing result is as follows:
  • Rin(t) The signal obtained by mixing the received total signal R(t) and the processed sampling signal Sd(t) in the signal mixer 70 is denoted as Rin(t), and the value of Rin(t) is calculated as follows:
  • the RF signal outputted to the RF transmitting receiver 20 happens to be the receiving antenna 80 of the local device receiving the base station 100.
  • the Rin(t) signal is received by the receiving end RX of the RF transmitting receiver 20, and is sent to the central processing unit 10 for processing after being demodulated, thereby realizing real-time control of the amplitude and phase of the sampled signal, and maximally suppressing the self-interfering signal.
  • the purpose of simultaneous full-duplex communication is performed by the signal received by the local receiving antenna 80 and the processed sampling signal are mixed, the self-interference is theoretically completely eliminated, and the RF signal outputted to the RF transmitting receiver 20 happens to be the receiving antenna 80 of the local device receiving the base station 100.
  • the Rin(t) signal is received by the receiving end RX of the RF transmitting receiver 20,
  • the simultaneous co-frequency full-duplex terminal and system provided by the present invention control the radio frequency transmitting receiver to transmit the radio frequency signal through the central processor, and the radio frequency signal is distributed into two paths through the power splitter, and one radio frequency signal is amplified by the power amplifier.
  • the transmitting antenna of the local device transmits outward, and the other RF signal is used as a sampling signal, and is amplified and phase-shifted by the controllable adaptive module, so that the sampling signal and the self-interfering signal received by the receiving antenna of the local device have the same amplitude and opposite phase.
  • the signal mixer is mixed with the base station signal received by the receiving antenna of the local device, and then transmitted to the radio frequency transmitting receiver, thereby realizing real-time control of the amplitude and phase of the sampling signal, maximally suppressing the self-interference signal, and improving self-interference suppression. performance.

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

Abstract

本发明公开了同时同频全双工终端和系统，控制射频发射接收器发射两路射频信号，一路放大并由本机天线发射，另一路作为采样信号进行放大和移相，使其与本机天线接收的自干扰信号的幅度相等相位相反，并与本机天线接收的基站信号、自干扰信号混合，以实时控制采样信号的幅度与相位，抑制自干扰，实现同时同频全双工通信。

Description

同时同频全双工终端和系统 技术领域
本发明涉及通信技术领域，特别涉及同时同频全双工终端和系统。
 背景技术
随着用户速率和业务量需求的飞速增长，无线通信系统所需的带宽不断增大，对频谱资源的需求迅速增加。然而，无线资源是有限的，扩展无线通信频段也会带来各方面的挑战。同时同频全双工技术是下一代通信5G的潜在关键技术，是指在相同时间里使用相同的频率进行同时发射和同时接收。
同时同频全双工技术理论上在相同条件下比传统通信可以提升一倍的传输速率，但同时同频全双工的本地发射信号会对本地接收信号产生很强的自干扰，因此需要在射频前端进行自干扰抑制。
因而现有技术还有待改进和提高。
 技术问题
鉴于上述现有技术的不足之处，本发明的目的在于提供同时同频全双工终端和系统，能最大程度的抑制自干扰信号。
 技术解决方案
一种同时同频全双工终端，其中包括：
中央处理器、射频发射接收器、功率分配器、功率放大器、本机发射天线、可控自适应模块、信号混合器和本机接收天线；
所述中央处理器，用于控制所述射频发射接收器发射射频信号，所述射频发射接收器发射的射频信号经功率分配器分配为两路；
其中，一路射频信号经所述功率放大器放大后，由所述本机发射天线向外发射，所述功率放大器还用于隔离所述本机发射天线接收的基站信号；另一路射频信号作为采样信号，经所述可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号、自干扰信号混合后，传输给所述射频发射接收器；
所述可控自适应模块，包括可控放大器和可控移相器；
其中，所述可控放大器将另一路射频信号放大，使放大后的采样信号与自干扰信号的幅度相等；所述可控移相器对放大后的采样信号进行移相处理，使采样信号与接收天线接收到的自干扰信号的相位相反。
所述的同时同频全双工终端中，其中所述中央处理器用于实时控制可控放大器的放大倍数。
所述的同时同频全双工终端中，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
一种同时同频全双工终端，其包括：
中央处理器、射频发射接收器、功率分配器、功率放大器、本机发射天线、可控自适应模块、信号混合器和本机接收天线；
所述中央处理器，用于控制射频发射接收器发射射频信号，所述射频发射接收器发射的射频信号经功率分配器分配为两路；
其中，一路射频信号经功率放大器放大后，由所述本机发射天线向外发射，另一路射频信号作为采样信号，经所述可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号、自干扰信号混合后，传输给射频发射接收器。
所述的同时同频全双工终端中，所述可控自适应模块包括可控放大器和可控移相器；所述可控放大器将另一路射频信号放大，使放大后的采样信号与接收天线接收到的自干扰信号的幅度相等；所述可控移相器对放大后的采样信号进行移相处理，使采样信号与接收天线接收到的自干扰信号的相位相反。
所述的同时同频全双工终端中，所述中央处理器用于实时控制可控放大器的放大倍数。
所述的同时同频全双工终端中，所述中央处理器还用于实时控制所述可控移相器移相的相位。
所述的同时同频全双工终端中，所述功率放大器还用于隔离本机发射天线接收的基站信号。
一种同时同频全双工系统，包括基站和同时同频全双工终端，其中，所述同时同频全双工终端包括：
中央处理器、射频发射接收器、功率分配器、功率放大器、本机发射天线、可控自适应模块、信号混合器和本机接收天线；
所述中央处理器，用于控制射频发射接收器发射射频信号，所述射频发射接收器发射的射频信号经功率分配器分配为两路；
其中，一路射频信号经功率放大器放大后，由所述本机发射天线向外发射，另一路射频信号作为采样信号，经所述可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号、自干扰信号混合后，传输给射频发射接收器。
所述的同时同频全双工系统中，其中所述可控自适应模块包括可控放大器和可控移相器；所述可控放大器将另一路射频信号放大，使放大后的采样信号与自干扰信号的幅度相等；所述可控移相器对放大后的采样信号进行移相处理，使采样信号与接收天线接收到的自干扰信号的相位相反。
所述的同时同频全双工系统中，其中所述中央处理器用于实时控制可控放大器的放大倍数。
所述的同时同频全双工系统中，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
所述的同时同频全双工系统中，其中所述功率放大器还用于隔离本机发射天线接收的基站信号。
 有益效果
相较于现有技术，本发明提供的同时同频全双工终端和系统，通过中央处理器控制射频发射接收器发射射频信号，射频信号经功率分配器分配为两路，一路射频信号经功率放大器放大后，由本机发射天线向外发射，另一路射频信号作为采样信号，经可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号、自干扰信号混合后，传输给射频发射接收器，从而实现了实时控制采样信号使其保持与自干扰信号幅度相等、相位相反，最大程度的抑制自干扰信号，达到同时同频全双工通信的目的。
 附图说明
图1为本发明同时同频全双工终端的结构框图；
图2为本发明同时同频全双工系统的结构框图；
图3为本发明同时同频全双工系统的原理示意图。
 本发明的最佳实施方式
本发明提供一种同时同频全双工终端和系统，为使本发明的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
请参阅图1，本发明提供的同时同频全双工终端包括：中央处理器10、射频发射接收器20、功率分配器30、功率放大器40、本机发射天线50、可控自适应模块60、信号混合器70和本机接收天线80。中央处理器10连接射频发射接收器20和可控自适应模块60，射频发射接收器20的TX（即transmit，发送）端口连接功率分配器30，所述功率分配器30的一输出端通过功率放大器40连接本机发射天线50，所述功率分配器30的另一输出端通过可控自适应模块60连接本机接收天线80。
其中，所述中央处理器10用于控制所述射频发射接收器20发射射频信号，及接收外部射频信号。所述射频发射接收器20通过TX端口输出射频信号，通过RX（即receive，接收）端口接收射频信号。其中，通过所述射频发射接收器20的TX端口输出的射频信号，经所述功率分配器30分配为两路，一路射频信号经所述功率放大器40放大后，由所述本机发射天线50向外发射，另一路射频信号作为采样信号，送入所述可控自适应模块60进行放大和移相处理。
本发明实施例中，用于抑制自干扰信号的采样信号来自所述射频发射接收器20的TX端口输出的射频信号，保证了采样信号的纯净，提高了自干扰抑制性能。
请继续参阅图1，经所述功率分配器30分配的采样信号需经所述可控自适应模块60进行放大和移相处理。其中，所述可控自适应模块60包括可控放大器601和可控移相器602，所述可控放大器601用于对采样信号的幅度进行放大，所述可控移相器602用于对采样信号的相位进行调整。
具体地，所述可控放大器601将采样信号放大，使放大后的采样信号与自干扰信号（即由本机发射天线50输出，被本机接收天线80接收的信号）的幅度相等，所述可控移相器602对放大后的采样信号进行移相处理，使采样信号与自干扰信号的相位相反，从而最大程度的抑制自干扰信号，达到同时同频全双工通信的目的。
请继续参阅图1，采样信号经所述可控自适应模块60进行放大和移相处理后送入所述信号混合器70与所述本机接收天线80接收的自干扰信号和基站信号混合，使自干扰信号与调整后的采样信号完全相抵，之后传输给所述射频发射接收器20。
由于所述射频发射接收器20输出的信号、接收天线80接收的自干扰信号不是一成不变的，因此需要对自干扰抑制的采样信号进行实时控制，本发明中所述中央处理器10还可根据功率放大器40的放大倍数和TX端口输出射频信号的相位，实时控制所述可控放大器601的放大倍数，及控制所述可控移相器602移相的相位，从而实现了对采样信号的实时调整，使其一直保持与自干扰信号的幅度相等、相位相反，进一步提高了自干扰抑制的性能。
请继续参阅图1，所述功率放大器40还用于隔离所述本机发射天线50接收的基站信号，进一步保证了采样信号不被外界噪声信号污染，提高采样信号的纯净度。同时，为了提高同时同频全双工的性能，所述本机发射天线50和所述本机接收天线80的隔离度应尽量大。
请参阅图2，本发明还相应提供一种同时同频全双工系统，其包括基站和如上所述的同时同频全双工终端。所述基站为CCFD（Co-time Co-frequency Full-Duplex，同时同频全双工）基站100，其包括基站接收天线101和基站发射天线102，由于上文已对同时同频全双工终端进行了详细描述，且CCFD基站为现有技术，此处不作详述。
以下对本发明的同时同频全双工系统工作过程进行详细说明：
如图3所示，射频发射接收器20通过其TX端口输出射频信号，同时通过RX端口接收射频信号。通过射频发射接收器20的TX端口输出的发射信号，经功率分配器30分成两路信号，其中：一路射频信号输出到功率放大器40，经本机发射天线50向外发射，另一路射频信号作为采样信号，经可控自适应模块60进行放大和移相处理，并送入信号混合器70与本机接收天线80接收的基站信号、自干扰信号混合后，传输给射频发射接收器20。
具体应用时，本机发射天线50主要包含两个信号：其一为本机发射信号S(t)，其二为通过本机发射天线接收到的基站信号Sn(t)，其中，本机发射信号S(t)通过本机发射天线向外发射，而本机发射天线接收到的基站发射信号Sn(t)由于功率放大器的隔离作用而无法进入功率分配器30，即无法与采样信号混合，保证了采样信号不被外界噪声信号污染。
本机接收天线80接收到的两个信号，其一为基站的发射信号Rw(t)，其二为本机的发射信号Rn(t)，即本机接收天线80总的接收信号R(t)为：
R(t)=Rw(t)+Rn(t)
为了实现把本机接收天线80接收到的本机发射信号Rn(t)，即自干扰信号消除掉，本发明将采样信号经中央处理器10实时控制的可控放大器601放大，使放大后的信号幅度等于本机接收天线80接收到的自干扰信号Rn(t)的幅度，并使该信号再经过中央处理器10实时控制的可控移相器602移相处理，使移相后的采样信号Sd(t)在相位上和自干扰信号Rn(t)的相位相反，即：
Sd(t) = -Rn(t)
处理后的采样信号Sd(t)和本机接收天线80接收到的自干扰信号Rn(t)在信号混合器70中混合，混合结果如下：
Sd(t) + Rn(t) = 0
接收总信号R(t)和经处理后的采样信号Sd(t)在信号混合器70中混合输出后的信号记为Rin(t)，Rin(t)的值计算如下：
Rin(t)=R(t)+Sd(t)
=[Rw(t)+Rn(t)]+[-Rn(t)]
=Rw(t)
即本机接收天线80接收到的信号和经处理后的采样信号混合后，理论上完全消除了自干扰，输出至射频发射接收器20中的射频信号恰好是本机接收天线80接收到基站100发来的信号Rw(t)，即Rin(t)=Rw(t)。Rin(t)信号经射频发射接收器20的接收端RX接收，经解调后送中央处理器10进行处理，从而实现了实时控制采样信号的幅度与相位，最大程度的抑制自干扰信号，达到同时同频全双工通信的目的。
综上所述，本发明提供的同时同频全双工终端和系统通过中央处理器控制射频发射接收器发射射频信号，射频信号经功率分配器分配为两路，一路射频信号经功率放大器放大后，由本机发射天线向外发射，另一路射频信号作为采样信号，经可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号混合后，传输给射频发射接收器，从而实现了实时控制采样信号的幅度与相位，最大程度的抑制自干扰信号，提高自干扰抑制性能。
可以理解的是，对本领域普通技术人员来说，可以根据本发明的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本发明所附的权利要求的保护范围。

Claims (16)

  1. 一种同时同频全双工终端，其中包括：
    中央处理器、射频发射接收器、功率分配器、功率放大器、本机发射天线、可控自适应模块、信号混合器和本机接收天线；
    所述中央处理器，用于控制所述射频发射接收器发射射频信号，所述射频发射接收器发射的射频信号经功率分配器分配为两路；
    其中，一路射频信号经所述功率放大器放大后，由所述本机发射天线向外发射，所述功率放大器还用于隔离所述本机发射天线接收的基站信号；另一路射频信号作为采样信号，经所述可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号、自干扰信号混合后，传输给所述射频发射接收器；
    所述可控自适应模块，包括可控放大器和可控移相器；
    其中，所述可控放大器将另一路射频信号放大，使放大后的采样信号与自干扰信号的幅度相等；所述可控移相器对放大后的采样信号进行移相处理，使采样信号与接收天线接收到的自干扰信号的相位相反。
  2. 根据权利要求1所述的同时同频全双工终端，其中所述中央处理器用于实时控制可控放大器的放大倍数。
  3. 根据权利要求1所述的同时同频全双工终端，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
  4. 根据权利要求2所述的同时同频全双工终端，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
  5. 一种同时同频全双工终端，其中包括：
    中央处理器、射频发射接收器、功率分配器、功率放大器、本机发射天线、可控自适应模块、信号混合器和本机接收天线；
    所述中央处理器，用于控制射频发射接收器发射射频信号，所述射频发射接收器发射的射频信号经功率分配器分配为两路；
    其中，一路射频信号经功率放大器放大后，由所述本机发射天线向外发射，另一路射频信号作为采样信号，经所述可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号、自干扰信号混合后，传输给射频发射接收器。
  6. 根据权利要求5所述的同时同频全双工终端，其中所述可控自适应模块包括可控放大器和可控移相器；所述可控放大器将另一路射频信号放大，使放大后的采样信号与自干扰信号的幅度相等；所述可控移相器对放大后的采样信号进行移相处理，使采样信号与接收天线接收到的自干扰信号的相位相反。
  7. 根据权利要求6所述的同时同频全双工终端，其中所述中央处理器用于实时控制可控放大器的放大倍数。
  8. 根据权利要求6所述的同时同频全双工终端，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
  9. 根据权利要求7所述的同时同频全双工终端，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
  10. 根据权利要求5所述的同时同频全双工终端，其中所述功率放大器还用于隔离本机发射天线接收的基站信号。
  11. 一种同时同频全双工系统，其中包括基站和同时同频全双工终端，其中，所述同时同频全双工终端包括：
    中央处理器、射频发射接收器、功率分配器、功率放大器、本机发射天线、可控自适应模块、信号混合器和本机接收天线；
    所述中央处理器，用于控制射频发射接收器发射射频信号，所述射频发射接收器发射的射频信号经功率分配器分配为两路；
    其中，一路射频信号经功率放大器放大后，由所述本机发射天线向外发射，另一路射频信号作为采样信号，经所述可控自适应模块进行放大和移相处理，使采样信号与本机接收天线接收的自干扰信号的幅度相等、相位相反，并送入信号混合器与本机接收天线接收的基站信号、自干扰信号混合后，传输给射频发射接收器。
  12. 根据权利要求11所述的同时同频全双工系统，其中所述可控自适应模块包括可控放大器和可控移相器；所述可控放大器将另一路射频信号放大，使放大后的采样信号与自干扰信号的幅度相等；所述可控移相器对放大后的采样信号进行移相处理，使采样信号与接收天线接收到的自干扰信号的相位相反。
  13. 根据权利要求12所述的同时同频全双工系统，其中所述中央处理器用于实时控制可控放大器的放大倍数。
  14. 根据权利要求12所述的同时同频全双工系统，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
  15. 根据权利要求13所述的同时同频全双工系统，其中所述中央处理器还用于实时控制所述可控移相器移相的相位。
  16. 根据权利要求11所述的同时同频全双工系统，其中所述功率放大器还用于隔离本机发射天线接收的基站信号。
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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105119629B (zh) 2015-07-10 2018-04-06 惠州Tcl移动通信有限公司 同时同频全双工终端和系统
CN105634541B (zh) * 2015-12-29 2018-11-27 北京邮电大学 全双工携能通信方法及节点
CN106130594B (zh) * 2016-01-26 2018-08-17 西北工业大学 基于中频域自干扰抑制的同时同频全双工通信方法及装置
CN107438039A (zh) * 2016-05-25 2017-12-05 中兴通讯股份有限公司 一种同频同时的数字信号抵消方法及装置
CN105898783A (zh) * 2016-06-07 2016-08-24 北京小米移动软件有限公司 无线全双工通信自干扰信号的处理方法及装置
CN106877899B (zh) * 2016-12-26 2019-10-01 集美大学 一种rfid读写器载波泄露消除系统
WO2020133213A1 (zh) * 2018-12-28 2020-07-02 Oppo广东移动通信有限公司 采样信号的方法、终端设备和网络设备
WO2020133159A1 (zh) * 2018-12-28 2020-07-02 Oppo广东移动通信有限公司 采样自干扰信号的方法、终端设备和网络设备
CN112769454B (zh) * 2019-10-21 2023-05-26 中兴通讯股份有限公司 干扰消除装置、同时同频全双工系统和无线终端
CN114629511B (zh) * 2022-05-17 2022-08-12 成都华芯天微科技有限公司 一种同频收发一体化的相控阵天线的信号处理方法
US12401552B2 (en) * 2022-11-17 2025-08-26 Nxp Usa, Inc. Interference cancellation in a multi-radio system and apparatus for cancellation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103427872A (zh) * 2013-09-03 2013-12-04 电子科技大学 一种同时同频全双工多抽头射频自干扰抵消系统及方法
CN103580720A (zh) * 2013-11-20 2014-02-12 东南大学 一种同频全双工自干扰抵消装置
CN104506209A (zh) * 2014-12-15 2015-04-08 北京邮电大学 一种基于耦合线紧耦合器的全双工自干扰信号消除方法和系统
CN104716980A (zh) * 2015-01-13 2015-06-17 中国人民解放军总参谋部第六十三研究所 一种同时同频全双工射频多子带自干扰消除方法
CN105119629A (zh) * 2015-07-10 2015-12-02 惠州Tcl移动通信有限公司 同时同频全双工终端和系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406016A (en) * 1981-11-27 1983-09-20 The United States Of America As Represented By The Secretary Of The Army VHF Sensor in-band radio relay
CN102811069B (zh) * 2012-07-25 2014-10-08 华为技术有限公司 一种收发信机和干扰对消方法
CN103916148B (zh) * 2013-01-05 2016-08-03 华为技术有限公司 一种自适应射频干扰抵消装置、方法、接收机及通信系统
CN104009775B (zh) * 2013-02-22 2016-07-27 华为技术有限公司 信号干扰的处理方法及装置
US9225382B2 (en) * 2013-05-20 2015-12-29 Rf Micro Devices, Inc. Tunable filter front end architecture for non-contiguous carrier aggregation
US9520983B2 (en) * 2013-09-11 2016-12-13 Kumu Networks, Inc. Systems for delay-matched analog self-interference cancellation
CN203872199U (zh) * 2014-01-13 2014-10-08 郑州航空工业管理学院 无线通信系统的自干扰消除电路
WO2015149373A1 (zh) * 2014-04-04 2015-10-08 华为技术有限公司 同频干扰抵消方法、装置及系统
SG11201610674QA (en) * 2014-06-26 2017-02-27 Huawei Tech Co Ltd Interference cancellation apparatus and method
US9450623B2 (en) * 2014-09-19 2016-09-20 Qualcomm Incorporated Noise canceler for use in a transceiver

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103427872A (zh) * 2013-09-03 2013-12-04 电子科技大学 一种同时同频全双工多抽头射频自干扰抵消系统及方法
CN103580720A (zh) * 2013-11-20 2014-02-12 东南大学 一种同频全双工自干扰抵消装置
CN104506209A (zh) * 2014-12-15 2015-04-08 北京邮电大学 一种基于耦合线紧耦合器的全双工自干扰信号消除方法和系统
CN104716980A (zh) * 2015-01-13 2015-06-17 中国人民解放军总参谋部第六十三研究所 一种同时同频全双工射频多子带自干扰消除方法
CN105119629A (zh) * 2015-07-10 2015-12-02 惠州Tcl移动通信有限公司 同时同频全双工终端和系统

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