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Relay communication system based on signal channel sequencing and network coding as well as signal channel sequencing method thereof

A network coding and wireless communication system technology, applied in the field of two-way relay communication system, can solve the problems of high symbol error rate and low accuracy in signal processing

Active Publication Date: 2015-07-29
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 based on signal channel sequencing and network coding as well as signal channel sequencing method thereof
  • Relay communication system based on signal channel sequencing and network coding as well as signal channel sequencing method thereof
  • Relay communication system based on signal channel sequencing and network coding as well as signal channel sequencing method thereof

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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 based on signal channel sequencing and network coding as well as a signal channel sequencing method thereof. The relay communication system is characterized in that K received signals are received by a signal channel sequencing module of relay nodes in the data uplink stage, in addition, the signal channel sequencing is carried out, and sequenced received signals are sent to a signal quantification module after being received; the signal quantification module carries out signal quantification processing on the sequenced received signals and then sends the signals to a signal network coding module for network coding, and finally, the network coding format of sequenced first and second data packets is estimated out. The system and the method provided by the invention have the advantages that the communication symbol error rate can be effectively reduced, the data speed is accelerated, the system capacity is improved, the relying degree of the information transmission on the wireless signal channel quality is reduced, and particularly, the performance improvement is more obvious at the low signal-to-noise ratio.

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 Applications(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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