基于非对称信道的双向中继传输方案

doi:10.3724/SP.J.1087.2012.02100

计算机应用 ›› 2012, Vol. 32 ›› Issue (08): 2100-2102.DOI: 10.3724/SP.J.1087.2012.02100

基于非对称信道的双向中继传输方案

范锦宏,何丽

北方工业大学信息工程学院，北京 100144

收稿日期:2012-03-27 修回日期:2012-05-15 发布日期:2012-08-28 出版日期:2012-08-01
通讯作者: 范锦宏
作者简介:范锦宏(1976-),女，山西晋中人，讲师，博士研究生，主要研究方向：无线协作、网络编码；
何丽(1976-),女，山东莱芜人，讲师，博士研究生，主要研究方向：移动数据库。
基金资助:
北京市教委科技发展计划项目(KM201210009006)

Transmission scheme of two-way relaying systems based on asymmetric channel

FAN Jin-hong,HE Li

College of Information Engineering, North China University of Technology, Beijing 100144, China

Received:2012-03-27 Revised:2012-05-15 Online:2012-08-28 Published:2012-08-01
Contact: FAN Jin-hong

摘要/Abstract

摘要： 针对双向中继系统广播时隙的两信道质量非对称时数据传输率受弱链路质量影响而使强链路质量信道增益未被充分利用的问题，提出一种新的传输方案。该方案采用先验比特信息方法，弱链路质量的节点在接收信号时利用已知比特信息，通过映射的子集来解调信号，使符号间的最小欧氏距离变大，两链路以与各自质量所对应的数据传输率进行传输，同时能达到两链路相同误比特率的要求。仿真结果表明该方案可应用到非对称信道的双向中继实际场景。

关键词: 双向中继, 多输入多输出, 网络编码, 非对称信道, 先验比特信息

Abstract: When the channel qualities of two-way relaying systems to the two stations are asymmetric, the data rates from the relay are limited by the weaker link of the two stations. The channel gain of the stronger link is not fully used. Therefore, a new transmission scheme was proposed. By using the prior bit information method, the weaker link receiver exploited a known bit information in each transmit symbol and decoded on a subset of the transmit symbol constellation which caused different minimum Euclidean distance. The two links can respectively transmit signals at different data rate corresponding to link quality and reach the requirement of the same bit error rate. The simulation results show that the proposed transmission scheme can be applied to practical scenarios with asymmetric channel qualities.

Key words: two-way relaying, Multiple-Input Multiple-Output (MIMO), network coding, asymmetric channel, prior bit information

中图分类号:

TN929.5

范锦宏何丽. 基于非对称信道的双向中继传输方案[J]. 计算机应用, 2012, 32(08): 2100-2102.

FAN Jin-hong HE Li. Transmission scheme of two-way relaying systems based on asymmetric channel[J]. Journal of Computer Applications, 2012, 32(08): 2100-2102.

参考文献

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基于非对称信道的双向中继传输方案

Transmission scheme of two-way relaying systems based on asymmetric channel

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