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相位旋转的速率为2的空时分组码 被引量：1

Rate-2 Space-Time Block Code with Phase Rotation
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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。 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.Simulation results demonstrate the decoding complexity is reduced greatly by proposed code only with 7 bit feedback.
作者 田心记 袁超伟 李琳 胡紫巍
机构地区 北京邮电大学信息与通信工程学院
出处 《电子科技大学学报》 EI CAS CSCD 北大核心 2011年第3期370-374,共5页 Journal of University of Electronic Science and Technology of China
基金 国家自然科学基金(60872149)
关键词 译码复杂度 反馈 相位旋转 速率为2 空时分组码 decoding complexity feedback phase rotation rate-2 space time block code
分类号 TN92 [电子电信—通信与信息系统]
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参考文献13

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二级参考文献12

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电子科技大学学报
2011年 第3期

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