空时块码的信道容量分析  

The analysis of channel capacity of space-time block codes

作　　者：卢鑫[1] 赵曙光 胡智勇[2] 

机构地区：[1]上海航天测控通信研究所,上海200086 [2]哈尔滨理工大学计算机与控制学院,哈尔滨150080

出　　处：《信息技术》2003年第7期6-8,11,共4页Information Technology

摘　　要：MIMO通过多天线发射多数据流并由多天线接收实现最佳处理 ,可实现很高的容量和频谱利用率 ,这种最佳处理是通过空时码实现的。本文依照一个实际信道模型 ,假定Rayleigh或Rice准静态平坦非相关和部分相关信道 ,分析了STBC的信道容量 ,并进行Monte -Carlo模拟仿真。结果表明STBC的容量远低于其理论限 ,特别是对于大的N和M。The Multiple-Input Multiple-Output (MIMO) technique performs optimal processing by multiple transmitting and multiple receiving data stream, which can improve capacity and spectral efficiency. The processing is obtained by space-time codes. This paper analyses channel capacity of space-time block codes(STBC) and gives monte-carlo simulations with the assumption that channel is Rayleigh or Rice, quasi-static and flat, uncorrelated and partially correlated according to a realistic channel model. The results show that the capacities of STBC are significantly lower than those associated to theoretical limits, specially for large N and M.

关 键 词：空时块码 信道容量 MIM0 中断容量 天线 STBC Monte-Carlo模拟仿真 

分 类 号：TN827[电子电信—信息与通信工程]