Method for eliminating self-interference by full-duplex wireless communication system and receiver

A wireless communication system and receiver technology, applied in transmission systems, electrical components, etc., can solve the problems of increased communication bandwidth, difficulty in eliminating node self-interference, etc., to achieve the effect of reducing bandwidth, solving node self-interference, and increasing technical complexity

Active Publication Date: 2016-01-13
CHINA MOBILE COMM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can solve the technical problem that it is difficult to eliminate node self-interference caused by the increase of communication bandwidth

Method used

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  • Method for eliminating self-interference by full-duplex wireless communication system and receiver
  • Method for eliminating self-interference by full-duplex wireless communication system and receiver
  • Method for eliminating self-interference by full-duplex wireless communication system and receiver

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Experimental program
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Effect test

Embodiment 1

[0056]Embodiment 1: When the module for self-interference cancellation of the receiving branch does not include an antenna interference cancellation module, all receiving branches correspond to one antenna interference cancellation module.

Embodiment 2

[0057] Embodiment 2: When the module for self-interference cancellation of the receiving branch does not include a radio frequency interference cancellation module, all the receiving branches correspond to one radio frequency interference cancellation module.

Embodiment 3

[0058] Embodiment 3: When the module for self-interference cancellation in the receiving branch does not include a baseband interference cancellation module, all receiving branches correspond to a baseband interference cancellation module.

[0059] As another more specific embodiment, the receiver adopts the antenna interference elimination module, the radio frequency interference elimination module and the baseband interference elimination module to jointly eliminate self-interference on the 20MHz broadband received signal. Such as Figure 7A As shown, the antenna interference elimination module 702 eliminates the self-interference of the broadband signal, and obtains the bandwidth reception signal at the receiving antenna after elimination, and the broadband reception signal after the antenna interference elimination is input to 20 parallel radio frequency filters 704 before the radio frequency interference is eliminated. , the center frequency points of the bandpass frequen...

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Abstract

The present invention discloses a method for eliminating self-interference by a full-duplex wireless communication system and a receiver. One or more filters are employed to parallelly separate a wideband signal into one or more narrowband signals, each of narrowband signals is subjected to self-interference elimination, the ability of interference suppression and self-interference elimination is raised, an the processing complexity is reduced at the same time. The receiver of the full-duplex wireless communication system comprises an antenna interference elimination module, an RF interference elimination module, a down conversion module, a sampling module, a baseband interference elimination module and a signal demodulation module. The method for eliminating self-interference by a full-duplex wireless communication system comprises the steps of inputting the wideband signal received by the receiver into one or more parallel filters to carry out narrowband separation to be divided into one or more narrowband signals, each of the narrowband signals is corresponding to one receiving branch, each of the receiving branch carries out self-interference elimination on the corresponding narrowband signal, and then the wideband signal recovery is carried out.

Description

technical field [0001] The invention belongs to the field of wireless communication, relates to a full-duplex wireless communication technology, in particular to a method and a receiver for eliminating self-interference in a full-duplex wireless communication system. Background technique [0002] Simultaneous same-frequency full-duplex technology, that is, communication nodes transmit and receive signals at the same frequency at the same time, which can significantly increase system capacity. However, effective self-interference suppression technology is needed on the full-duplex node receiver to effectively suppress and eliminate the interference signal of the node's own transmitter, that is, the self-interference signal of the full-duplex node, so as to effectively avoid or reduce the self-interference signal of the node's own transmitter. The effect of the self-interfering signal on the signal received by the node's own receiver from another communicating node (ie the rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/52
Inventor 焦秉立马猛易芝玲廖怀林黄晓庆潘成康
Owner CHINA MOBILE COMM GRP CO LTD
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