| 多径信道下基于空时分组码的发送分集技术 |
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| 引用本文： | 杜光宇,何培宇,任霄函.多径信道下基于空时分组码的发送分集技术[J].通信技术,2008,41(10). |
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| 作者姓名： | 杜光宇 何培宇 任霄函 |
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| 作者单位： | 四川大学,电子信息学院,四川,成都,610064 |
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| 基金项目： | 通信抗干扰技术国家重点实验室资助项目 |
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| 摘 要： | 文章在多径信道下,提出了一种基于RAKE接收机的空时分组编码(STBC)方案.该方案将空时分组编码(STBC)与RAKE接收机的多径叠加相干检测的方法相结合,从而可以在频率选择性衰落信道下采用多发射天线实现发送分集.此方案获得的分集增益与由采用相同数量接收天线的最大比接收合并(MRRC)方案得到的接收分集增益接近,能够较大地提高传榆系统的可靠性.
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| 关 键 词： | 空时分组编码 RAKE接收机 多径信道 发送分集 |
Transmit Diversity Technique Based on Space-Time Block Coding in Multi-path Fading Environment |
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| DU Guang-yu,HE Pei-yu,REN Xiao-han.Transmit Diversity Technique Based on Space-Time Block Coding in Multi-path Fading Environment[J].Communications Technology,2008,41(10). |
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| Authors: | DU Guang-yu HE Pei-yu REN Xiao-han |
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| Affiliation: | DU Guang-yu,HE Pei-yu,REN Xiao-han (School of Electronics Engineering , Information,Sichuan University,Chengdu Sichuan 610064,China) |
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| Abstract: | This paper presents a RAKE-based STBC scheme used in multi-path fading environment. With the coherent detection method of RAKE receiver, the scheme can provide transmit diversity by using multiple transmitting antennas in frequency selective fading channel. The diversity gain of this scheme is close to that of MRRC(maximal-ratio receiver combining)scheme, which uses same amount of receiving antennas. Simulation results show that the reliability of the transmission system can thus be improved obviously. |
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| Keywords: | Space-time block coding RAKE receiver multi-path transmit diversity |
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