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空时块码的信道容量分析
The analysis of channel capacity of space-time block codes
【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。
【Abstract】 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.
【Key words】 space-time codes; space-time block codes; MIMO; outage capacity;
- 【文献出处】 信息技术 ,Information Technology , 编辑部邮箱 ,2003年07期
- 【分类号】TN911
- 【被引频次】3
- 【下载频次】117