Same time same frequency full duplex communication phase noise suppression system and method
A technology of same-frequency full-duplex and cooperative communication, applied in multi-frequency code system, modulated carrier system, duplex signal operation, etc., can solve the influence of weakening phase noise, does not give power allocation calculation method, and reduces signal transmission bit error rate etc.
Active Publication Date: 2018-02-02
UNIV OF ELECTRONIC 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 same time same frequency full duplex communication phase noise suppression system and method. The same time same frequency full duplex communication phase noise suppression system comprises an information source subsystem, a relay subsystem and a terminal receiving subsystem; the output end of the information source subsystem is connected with the terminal receiving subsystem through the relay subsystem; the information source subsystem is used for producing a target signal, processing the produced signal, and sending the signal obtained through processing to the relay subsystem; the relay subsystem is used for receiving the signal from the information source subsystem, converting the signal to the digital domain and performing receiving processing, performing digital suppression on the signal performed the receiving processing in the digital domain, performing transmitting processing on the signal performed the digital suppression after performing amplification and pilot insertion and converting to the analog domain, and transmitting the signal to the receiving subsystem; and the terminal receiving system is used for processing the signal from the relay subsystem, so as to complete the receiving of the target signal. The invention reduces the bit error rate of the signal transmission and suppresses the influence of the 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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Login to View More 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 ELECTRONIC SCI & TECH OF CHINA