A phase noise suppression system and method for simultaneous and same-frequency full-duplex cooperative communication
A technology of same-frequency full-duplex and cooperative communication, applied in multi-frequency code system, duplex signal operation, modulated carrier system, etc., can solve the problem of unspecified power allocation calculation method, reduce signal transmission bit error rate, and disadvantageous suppression Issues such as phase noise interference
Active Publication Date: 2020-09-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Therefore, the influence of phase noise can be greatly weakened by suppressing CPE; in the existing method, the CPE and the self-interference channel can be estimated at the same time, and part of the CPE can be removed from the self-interference signal to suppress the self-interference signal in the relay. The impact of phase noise interference; at the same time, reasonable power allocation on each subcarrier at the relay will effectively improve the signal-to-noise ratio of the receiving end. The optimal power allocation calculation method is not conducive to reducing the bit error rate of signal transmission, and is not conducive to suppressing the influence of phase noise interference
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[0071] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0072] Such as figure 1 As shown, a phase noise suppression system for simultaneous and same-frequency full-duplex cooperative communication includes a source subsystem, a relay subsystem, and a terminal receiving subsystem; the output of the source subsystem is received by the terminal through the relay subsystem Subsystem connections;
[0073] The source subsystem is used to generate a target signal and process the generated signal, and send the processed signal to the relay subsystem; specifically, the source subsystem includes a source, and the output of the source The terminal is connected to the source transmitter through the first pilot insertion module, the first inverse Fourier transform module, the first cyclic prefix insertion m...
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The invention discloses a phase noise suppression system and method for simultaneous and same-frequency full-duplex cooperative communication, including a source subsystem, a relay subsystem and a terminal receiving subsystem; the output of the source subsystem passes through the relay subsystem Connected with the terminal receiving subsystem; the source subsystem is used to generate the target signal and process the generated signal, and send the processed signal to the relay subsystem; the relay subsystem is used to receive information from the source The signal of the subsystem is converted to the digital domain and received and processed. The received and processed signal is digitally suppressed in the digital domain. After the digitally suppressed signal is amplified and the pilot is inserted, it is transmitted and processed, and converted to the analog domain. The signal is transmitted to the receiving subsystem; the terminal receiving subsystem is used to process the signal from the relay subsystem to complete the reception of the target signal. The invention reduces the bit error rate of signal transmission and suppresses the influence of phase noise interference.
Description
technical field [0001] The invention relates to cooperative transmission and phase noise suppression of a relay subsystem, in particular to a phase noise suppression system and method for simultaneous and same-frequency full-duplex cooperative communication. Background technique [0002] Phase noise is the harmonic and intermodulation products generated by nonlinear effects in nonlinear devices. The noise introduced by the non-ideal factors of the oscillator forms random phase modulation on the output carrier. In general, the free oscillator phase noise is modeled as into a Wiener process. Phase noise in multi-carrier transmission, such as in a system using orthogonal frequency division multiplexing (OFDM) modulation, will cause inter-carrier interference (ICI) and common phase error (common phase error) of the signal. phase error, CPE), where the energy of the common phase error part is much greater than the energy of the intercarrier interference part. Therefore, the inf...
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IPC IPC(8): H04L27/26H04L27/38H04L25/02H04L25/03H04L5/14
CPCH04L5/1461H04L25/022H04L25/0328H04L27/2691H04L27/2692H04L27/2695H04L27/3854
Inventor 黄川陈家令何萌
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA