| 相位旋转的速率为2的空时分组码 |
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| 引用本文： | 田心记,袁超伟,李琳,胡紫巍.相位旋转的速率为2的空时分组码[J].电子科技大学学报(社会科学版),2011(3). |
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| 作者姓名： | 田心记 袁超伟 李琳 胡紫巍 |
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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(60872149) |
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| 摘 要： | 速率为2的空时分组码(R2-STBC)能达到全速率全分集,然而其译码复杂度与调制阶数的平方成正比。为了降低译码复杂度,提出了一种基于相位旋转的、速率为2的空时分组码(PR-R2-STBC),发送端根据反馈信息将部分发送信号旋转一定的角度,实现了信号在传输过程中两两正交,从而使得其译码复杂度与调制阶数成正比。仿真结果显示,与R2-STBC相比,该编码仅需反馈7 bit就极大地降低了译码复杂度。
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| 关 键 词： | 译码复杂度 反馈 相位旋转 速率为2 空时分组码 |
Rate-2 Space-Time Block Code with Phase Rotation |
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| TIAN Xin-ji,YUAN Chao-wei,LI Lin, HU Zi-wei.Rate-2 Space-Time Block Code with Phase Rotation[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2011(3). |
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| Authors: | TIAN Xin-ji YUAN Chao-wei LI Lin HU Zi-wei |
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| Institution: | TIAN Xin-ji,YUAN Chao-wei,LI Lin,and HU Zi-wei(School of Information and Communication Engineering,Beijing University of Posts and Telecommunications Haidian Beijing 100876) |
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| Abstract: | The full rate and full diversity could be achieved by Rate-2 space-time block code,whereas the decoding complexity is proportional to the square of the modulation order.A rate-2 space time block code with phase rotation is proposed in order to reduce the decoding complexity.Part of the transmitted signals is rotated by a certain angle,and the pairwise orthogonal between the transmitted signals is realized in the proposed scheme,so that the decoding complexity is proportional to the modulation order.Simulati... |
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| Keywords: | decoding complexity feedback phase rotation rate-2 space time block code |
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