基于准正交空时分组码的多中继协作方案

›› 2013, Vol. 26 ›› Issue (12): 118-.

基于准正交空时分组码的多中继协作方案

季彦呈,章国安,张士兵,刘敏

(南通大学电子信息学院,江苏南通 226019)

出版日期:2013-12-15 发布日期:2014-01-10
作者简介:季彦呈(1982—),男,博士,讲师。研究方向:中继通信,协作感知及编码理论等。E-mail:jiyancheng@ntu.edu.cn。章国安(1965—),男,博士,教授,硕士生导师。研究方向:无线Mesh网,宽带信息网,NGN网络等。张士兵(1963—),男,博士,教授,硕士生导师。研究方向:超宽带通信,认知无线网络等。刘敏(1978—),男,博士,讲师。研究方向:协作频谱感知技术,超宽带无线通信等。

A Multi-relay Cooperation Scheme Based on QOSTBC

JI Yan-Cheng, ZHANG Guo-An, ZHANG Shi-Bing, LIU Min

(School of Electronics and Information,Nantong University,Nantong 226019,China)

Online:2013-12-15 Published:2014-01-10

摘要/Abstract

摘要：

根据准正交空时分组码提出了一种基于选择中继协议的多中继协作方案。从两个方面讨论了该方案的空间分集性能,通过分析成对差错概率证明,若所有的中继都正确译码,该方案可以获得全分集增益;若某些中继不能正确译码,该方案仍可以获得部分分集增益。将所提方案与使用正交空时分组码的协作方案进行比较,仿真结果表明,在信噪比较高时,两个方案都可获得全分集增益,但所提方案具有更高的编码增益。而当信噪比变低时,所提方案具有更高的分集增益和编码增益。

关键词: 协作通信, 空时分组码, 选择中继协议, 成对差错概率

Abstract:

A multi-relay cooperation scheme based on selection relaying (SR) protocol based on quasi-orthogonal space-time code (QOSTBC) is presented.The spatial diversity performance of the scheme is discussed from two aspects: pair wise error probability (PEP) analysis shows that if all the relays correctly decode the information,the scheme can achieve full diversity gains;and if certain relays unsuccessfully decode the information,the scheme can only obtain partial diversity gains.A comparison between the proposed scheme and the cooperation scheme utilizing orthogonal Space-Time code (OSTBC) demonstrates that both schemes can achieve full diversity gains at high signal-to-noise ratio (SNR),but the proposed scheme has higher coding gains.And when the SNR becomes lower,the proposed scheme has higher diversity and coding gains.

Key words: cooperative communication;space-time block code;selection relaying protocol;pair wise error probability

中图分类号:

TN925+.3

季彦呈, 章国安, 张士兵, 刘敏. 基于准正交空时分组码的多中继协作方案[J]. , 2013, 26(12): 118-.

JI Yan-Cheng, ZHANG Guo-An, ZHANG Shi-Bing, LIU Min. A Multi-relay Cooperation Scheme Based on QOSTBC[J]. , 2013, 26(12): 118-.

[1]	赵华龙,张志丽,王力男. 协作通信技术在卫星系统中的应用[J]. , 2014, 27(8): 90-.
[2]	张伟岗, 尚宇. 空时编码在OFDM系统中的应用[J]. , 2011, 24(9): 101-.
[3]	杨鹏, 李靖. 旋转编码协作方案中的功率优化分配研究[J]. , 2010, 23(6): 59-.