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一种空间相关MIMO信道下的空时预编码方案

A precoding space-time code in the spatial correlated MIMO channel
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摘要 在实际的多输入多输出(MIMO:Multiple Input Multiple Output)移动通信系统中,信道的空间相关性通常会使得现有的空时编码方案难以获得最佳的误码性能。为了解决该问题,本文提出了一种适用于MIMO空间相关信道的空时预编码方案。该方案在完成对发射信号的空时编码后,针对发射天线的空间相关矩阵设计了合理的预编码矩阵,进而能够在保证分集增益的前提下克服相关信道的不利影响。仿真结果证实,该方案能够在一定程度上有效提高整个系统的误码性能。 In the actual multiple input multiple output (MIMO) mobile communication system, the existent space - time codes (STC) can not achieve the optimal performance because of the spatial correlated channel. This paper presents a precoding STC for spatial correlated MIMO channel. The results confirm that in addition to ensuring the diversity gain, this scheme can improve the bit - error performance of the MIMO system with correlated channel.
作者 陈磊
出处 《信息技术》 2007年第7期62-64,共3页 Information Technology
关键词 多输入多输出 相关信道 预编码 空时编码 MIMO systems channel correlation precode space - time code
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参考文献8

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