| 衰落信道空间相关对空时编码性能的影响 |
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| 引用本文： | 李中勤,陈建峰. 衰落信道空间相关对空时编码性能的影响[J]. 无线电通信技术, 2006, 32(3): 26-27,47 |
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| 作者姓名： | 李中勤 陈建峰 |
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| 作者单位： | 中国电子科技集团公司第54研究所,河北,石家庄,050081 |
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| 摘 要： | 在各收发天线间的信道相互独立时,空时编码技术可获得最大分集增益。而在实际环境中,信道之间是彼此相关的,这将在一定程度上影响通信系统的性能。结合差分空时编码方案研究该问题,并以2个发射天线,1个接收天线为例详细推导了空间相关衰落信道条件下,差分检测方案误码率上界的解析表示式。计算机仿真验证了该表示式的有效性。
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| 关 键 词： | 差分空时分组码 发射分集 差分检测 |
| 文章编号： | 1003-3114（2006）03-26-2 |
| 收稿时间： | 2005-11-27 |
| 修稿时间： | 2005-11-27 |
Influence of spatial correlated fading channels on space-time block codes |
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| LI Zhong-qin,CHEN Jian-feng. Influence of spatial correlated fading channels on space-time block codes[J]. Radio Communications Technology, 2006, 32(3): 26-27,47 |
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| Authors: | LI Zhong-qin CHEN Jian-feng |
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| Affiliation: | The 54th Research Institute of CETC, Shijiazhuang Hebei 050081, China |
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| Abstract: | Only if the channels are mutually independent can the greatest diversity gain be obtained by the space-time block codes. However, the practical transfer channels are always correlated with each other, which would inevitably degrade the performance of communications. Incorporating the space-time block codes, this paper studies the influence of spatial correlated Rayleigh fading channels. Particularly, an analytical formula for the upper bound of symbol error rate is derived with two transmit antennas and one receive antenna, and its validness is verified through computer simulations. |
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| Keywords: | differential space-time block codes transmit diversity differential detection |
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