| 一种新的线性译码的准正交空时分组码方案 |
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| 引用本文： | 张建忠,李宏伟,邓冬虎,邵龙.一种新的线性译码的准正交空时分组码方案[J].哈尔滨理工大学学报,2012,17(1):101-104. |
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| 作者姓名： | 张建忠 李宏伟 邓冬虎 邵龙 |
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| 作者单位： | 1. 空军工程大学电讯工程学院,陕西西安,710077
2. 中国人民解放军94303部队61分队,山东潍坊,261051 |
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| 基金项目： | 国家自然科学基金(60971100);陕西省自然科学基础研究项目(SJ08F10) |
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| 摘 要： | 传统的准正交空时分组码可以实现全速率传输,但是不能获得最大的发送分集增益,而且译码复杂度相对较高,这主要是由于检测矩阵中存在干扰项造成的.为了解决这个问题,本文提出了一种新的准正交空时分组方案,该方案通过利用Givens旋转运算,将检测矩阵变换为一个对角阵,消除其中的干扰项,使得接收端可以采用线性方法来译码,从而既提高了系统的分集增益,又降低了译码的复杂度.仿真实验也验证了所提方案的优越性.
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| 关 键 词： | 准正交空时分组码 分集增益 检测矩阵 线性译码 |
A New QO-STBC Scheme with Linear Decoding |
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| ZHANG Jian-zhong
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LI Hong-wei
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DENG Dong-hu
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SHAO Long.A New QO-STBC Scheme with Linear Decoding[J].Journal of Harbin University of Science and Technology,2012,17(1):101-104. |
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| Authors: | ZHANG Jian-zhong LI Hong-wei DENG Dong-hu SHAO Long |
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| Affiliation: | 1.Telecommunication Engineering Institute,Air Force Engineering University,Xi’an 710077,China; 2.61 Unit of 94303 Army of PLA,Weifang 261051,China) |
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| Abstract: | A conventional QO-STBC scheme can achieve the full rate,but at the cost of transmission diversity gain and decoding complexity.These disadvantages of the conventional QO-STBC scheme are mainly a result of interference terms in the detection matrix.In order to solve the problem,this paper proposes a new QO-STBC scheme which transforms the original detection matrix into a diagonal matrix using Givens rotation algorithm and eliminates interference terms.The proposed method achieves improved diversity gain with respect to the conventional QO-STBC scheme,as well as a great reduction in decoding complexity by means of a linear decoding algorithm.Simulation also shows the superiority of the proposed scheme. |
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| Keywords: | quasi-orthogonal space-time block coding(QO-STBC) diversity gain detection matrix linear decoding |
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