基于不完美CSIT的MIMO系统线性预编码传输方案  

Linear precoding for MIMO system based on imperfect CSIT

作　　者：吴森[1] 黄文韬[1] 李春燕[1] 

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《信息技术》2009年第7期88-92,共5页Information Technology

摘　　要：使用一个基于统计信息的CSIT模型:动态CSIT模型(dynamic CSIT model)。首先根据最小化平均误码率Pe的设计准则,建立凸优化问题,通过变量代换,使用标准的凸优化算法推导出最优的线性预编码器。在此基础上,提出一种正交STBC和线性预编码相结合的传输方案。仿真结果显示,该方案可获得良好的性能增益和强健的鲁棒性。This paper bases on a dynamic CSIT model which utilizes the statistical information of the channel. Firstly, aiming to minimize the average eodeword error probability, a performance criterion is derived. Then, by variable substitution and standard convex optimization algorithm, the best linear precoder is deduced. Upon these,the paper proposes a transmission scheme combining the orthogonal space-time block codes and the optimal linear preeoder. Simulation results demonstrate significant gains and strong robustness.

关 键 词：多入多出 线性预编码 空时分组码 

分 类 号：TN911[电子电信—通信与信息系统]