MIMO-CDMA系统中改进的分层空频接收方案  

Improved Layered Space-Frequency Scheme for MIMO-CDMA Systems

作　　者：王启星[1] 李宝金[1] 常永宇[1] 杨大成[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《北京邮电大学学报》2006年第5期71-74,83,共5页Journal of Beijing University of Posts and Telecommunications

摘　　要：为有效克服多输入多输出(MIMO-CDMA)系统中的干扰,提出了一种用于单载波MIMO-CDMA系统的分层空频接收方案.由于传统的分层接收方案需进行大量的伪逆和排序运算,复杂度很高以至于难以实现.为此根据实际情况,改进方案充分利用均衡系数的计算特性,只进行1次伪逆和1次排序运算.仿真结果从系统性能和复杂度上证实了该方案的有效性.Multiple input multiple output（MIMO） architecture is one of the most promising techniques to improve the quality and capacity of future wireless communication systems. However, traditional layered receive detection for MIMO systems needs much time in performing inversing and sorting. Aiming in solving this problem, an improved layered soace-frequency scheme based on inversing and sorting only once for the broadband MIMO-CDMA systems is proposed. The proposed scheme opens the way of detecting multi-antenna signals in the frequency domain. Simulation results show that the proposed layered space-frequency scheme can obtain better tradeoff between performance and complexity than conventional ones.

关 键 词：多输入多输出 分层空频接收方案 单载波频域均衡器 

分 类 号：TN911.23[电子电信—通信与信息系统]