| 基于GABBA码的分布式空时编码改进方案 |
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| 引用本文： | 胡紫巍,袁超伟,田心记,王秋才.基于GABBA码的分布式空时编码改进方案[J].北京邮电大学学报,2011,34(Z1):59-62. |
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| 作者姓名： | 胡紫巍 袁超伟 田心记 王秋才 |
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| 作者单位： | 北京邮电大学信息与通信工程学院; |
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| 基金项目： | 国家自然科学基金项目(60672132,60872149) |
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| 摘 要： | 放大转发中继网络中，传统的基于广义ABBA(GABBA)码的分布式空时编码方案没有利用传输过程中的信道状态信息(CSI)，针对此问题提出了一种基于GABBA码的分布式空时编码改进方案. 在该方案中，接收端由CSI得到本次传输的反馈信息，1个中继节点根据此反馈信息对该支路原发送信号进行预处理，从而减小了信道相关性，提高了系统的可靠性. 理论分析和仿真结果显示，与已有结果相比，所提方案只需要以1个比特的反馈量为代价，就能使系统的误比特率性能获得显著改善.
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| 关 键 词： | 中继网络 分布式空时编码 反馈 广义ABBA码 |
An Improved Scheme of Distributed Space-Time Coding Based on GABBA Codes |
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| HU Zi-wei,YUAN Chao-wei,TIAN Xin-ji,WANG Qiu-cai.An Improved Scheme of Distributed Space-Time Coding Based on GABBA Codes[J].Journal of Beijing University of Posts and Telecommunications,2011,34(Z1):59-62. |
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| Authors: | HU Zi-wei YUAN Chao-wei TIAN Xin-ji WANG Qiu-cai |
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| Affiliation: | HU Zi-wei,YUAN Chao-wei,TIAN Xin-ji,WANG Qiu-cai (School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China) |
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| Abstract: | Aim at the problem that the channel state information(CSI) is not taken full advantage in traditional distributed generalized ABBA(GABBA) space-time codes in amplify-and-forward relay networks,an improved scheme is proposed.In this scheme,the receiver calculates and sends out the current feedback information according to the CSI.After receiving the feedback information at one of the relay nodes,some pre-process is used on the original signal of this branch.The scheme can alleviate the interference brought b... |
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| Keywords: | relay networks distributed space-time codes feedback generalized ABBA codes |
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