| 一种基于多中继选择的分布式空时分组编码方案 |
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| 引用本文： | 刘义风,邝育军,隆克平.一种基于多中继选择的分布式空时分组编码方案[J].重庆邮电学院学报(自然科学版),2009(1). |
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| 作者姓名： | 刘义风 邝育军 隆克平 |
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| 作者单位： | 重庆邮电大学通信工程学院;电子科技大学光互联网及移动信息网络研究中心; |
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| 基金项目： | 国家“863”计划项目(2007AA01Z227);;国家自然科学基金项目(60672045);;教育部博士点基金项目(20060614018);;国家杰出青年科学基金项目(60725102) |
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| 摘 要： | 协作分集可以抵抗无线信道的多径衰落,结合空时分组编码可以更加有效地提高系统性能。传统的空时编码协作通信是选择所有正确译码的Relay进行协作转发,当Relay个数大于空时编码矩阵天线数时,系统无法获得额外增益,同时将消耗大量能量。给出了一种多中继选择方案(M-OR),提出了一种基于M-OR终端选择的分布式空时分组编码协作方案。在给定STBC编码矩阵条件下,依据信道状况信息选择多个合适的中继终端参与分布式空时分组编码协作通信。新的协作方案通过简单的协议可获得传统方案的分集复用折中,同时节省系统能量。仿真结果表明,新的协作方案具有良好的分集复用性能并验证了其有效性。
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| 关 键 词： | 空时分组编码 协作分集 虚拟天线阵列 终端选择 |
A distributed space-time block coding scheme based on multi-relay selection |
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| LIU Yi-feng,KUANG Yu-jun,LONG Ke-ping.A distributed space-time block coding scheme based on multi-relay selection[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(1). |
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| Authors: | LIU Yi-feng KUANG Yu-jun LONG Ke-ping |
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| Affiliation: | 1.School of Communication and Information Engineering;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China;2.Research Centre for Optical Internet & Mobile Information Networks;University of Electronic Science and Technology of China;Chengdu 610054;P.R.China |
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| Abstract: | Cooperative diversity techniques have been adopted as an efficient way to mitigate multipath fading in wireless environments,and the performance will become more efficient when combining with space-time block coding.The traditional space-time cooperative communication chooses all the relays which could decode correctly,but it can't achieve the additional benefit when cooperative nodes more than the column of space-time matrix.In this paper,the multi-opportunistic relaying(M-OR)strategy was proposed to selec... |
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| Keywords: | space-time block coding cooperative diversity virtual antenna array terminal selection |
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