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Relay Communication System and Channel Sorting Method Based on Channel Sorting and Network Coding

A technology for network coding and wireless communication systems, applied in the field of two-way relay communication systems, can solve the problems of low accuracy and high symbol error rate in signal processing, and achieve the goal of improving accuracy, reducing symbol error rate, and expanding communication capacity. Effect

Active Publication Date: 2018-03-09
合肥庐阳科技创新集团有限公司
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Problems solved by technology

directly to the Estimation makes the estimation accuracy not high, and the signal processing symbol error rate is large

Method used

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  • Relay Communication System and Channel Sorting Method Based on Channel Sorting and Network Coding
  • Relay Communication System and Channel Sorting Method Based on Channel Sorting and Network Coding
  • Relay Communication System and Channel Sorting Method Based on Channel Sorting and Network Coding

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Embodiment Construction

[0041] Such as figure 1 As shown, in the wireless two-way relay communication system TWRC, it includes: a relay node R and two end nodes, that is, the first end node S 1 and the second end node S 2 ; The relay node R has K antennas; K is a positive integer; the first end node S 1 and the second end node S 2 Each has an antenna; the signal transmission of the two-way relay communication system consists of two stages, including the data uplink stage and the data downlink stage; the signal processing process of the relay node R is as follows: figure 2 As shown, it includes a channel sorting module, a signal quantization module and a signal network coding module; wherein, the channel sorting module extracts the known channel fading coefficients, obtains a channel matrix with a dimension of K×2, and calculates the sum of the squares of the moduli of each element in each column And performing comparison and column exchange, the column exchange ensures that the sum of the squares...

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Abstract

The invention discloses a relay communication system and channel sorting method based on channel sorting and network coding, which is characterized in that in the data uplink stage, the channel sorting module of the relay node receives K received signals and performs channel sorting to obtain sorted received signals. After the signal is sent to the signal quantization module; the signal quantization module performs channel quantization processing on the sorted received signal and then sends it to the signal network coding module for network coding, and finally estimates the number of the sorted first data packet and the second data packet Network encoding format. The invention can effectively reduce the symbol error rate of communication, increase the data rate and system capacity, and reduce the dependence of information transmission on the quality of the wireless channel, especially the performance improvement under low signal-to-noise ratio is more obvious.

Description

technical field [0001] The invention relates to a two-way relay communication system in wireless communication, in particular to a relay communication system based on channel sorting and network coding and a channel sorting method thereof. Background technique [0002] Existing patents (publication number CN103281271 A, patent application number CN201310207093) disclose a method for physical layer network coding through channel quantization. In the channel quantization process of this method, the difference in channel quality from two end nodes to the relay node is not considered. Specifically, due to the difference in the transmission environment of the wireless channel from the two end nodes to the relay node, the fading coefficients of the channel from the two end nodes to the relay node are different. directly to the Estimation makes the accuracy of estimation not high, and the symbol error rate of signal processing is relatively high. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04B7/15H04L25/03
Inventor 开彩红周清峰张胜利
Owner 合肥庐阳科技创新集团有限公司
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