| 一种新的准正交空时分组码的设计 |
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| 引用本文： | WANG Chao,李雅珍,XIAO Li-ping. 一种新的准正交空时分组码的设计[J]. 通信技术, 2008, 41(8) |
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| 作者姓名： | WANG Chao 李雅珍 XIAO Li-ping |
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| 作者单位： | 东北大学秦皇岛分校,计算机工程系,河北,秦皇岛,066004 |
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| 摘 要： | 根据正交设计理论,当发送天线数大于2时,不存在可以获得完全分集增益和全速率的复正交空时分组码.对空时分组码采用准正交设计,能够保证数据以全速率传输,但是会使其误码性能降低.文章在对准正交空时分组码(QOSTBC)结构研究的基础上,提出了一种全速率的四发射天线准正交空时分组码,并给出了基于最大似然译码方法.仿真结果表明,文章方案与已有典型的Jafarkhani准正交空时分组码相比,在高信噪比时有更好的误码性能.
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| 关 键 词： | 准正交 全速率 最大似然译码 |
A Novel Quasi-orthogonal Space-Time Block Codes |
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| WANG Chao,LI Ya-zhen,XIAO Li-ping. A Novel Quasi-orthogonal Space-Time Block Codes[J]. Communications Technology, 2008, 41(8) |
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| Authors: | WANG Chao LI Ya-zhen XIAO Li-ping |
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| Affiliation: | WANG Chao,LI Ya-zhen,XIAO Li-ping(School of Information Science , Engineering,Northeastern University,Shenyang Liaoning 110004,China,Northeastern College of Computer Engineering,University at Qinhuangdao,Qinhuangdao Hebei 066004,School of Information Science , Engineering,Yanshan University,China) |
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| Abstract: | According to the theory of orthogonal design,a complex orthogonal space-time block code that provides full diversity and full transmission rate could not be realized for more than two antennas.Based on quasi-orthogonal design,the space-time block codes that obtain full transmission rate may degrade the performance.This paper,by using the quasi-orthogonal design method,proposes a novel full rate space-time block code for four transmit antennas based on quasi-orthogonal design,including a maximum-likelihood(M... |
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| Keywords: | quasi-orthogonal full diversity maximum-likelihood decoding |
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