摘要
考虑瑞利或赖斯块衰落环境下的MIMO系统,发射端没有信道状态信息(CSI),接收端通过线性估计滤波器由训练序列估计出非理想的CSI,根据一般的系统分析模型,推导出信道最大(即时)互信息的上限或下限的表达式,进行计算机仿真,分析估计误差、训练长度以及信噪比的影响。
In this paper, we investigate the capacity of multiple-input multiple-output（MIMO） systems operating in rayleigh and ricean block-fading channels is considered under the assumptions that No CSI is available at the transmitter and that imperfect channel side information （CSI） is available from training symbols at the receiver by means of an linear estimation filter. Based on an generalized system model, the upper and lower bounds on the maximum （ or instantaneous） mutual information is presented, and the impacts of channel estimation errors, training duration and SNR on the capacity by the computer simulation are given.
出处
《通信技术》
2007年第12期99-101,共3页
Communications Technology
基金
重庆市自然科学基金资助(编号:CSTC2006BB2359)
关键词
衰落信道
MIMO系统容量
线性估计
最大即时互信息
fading channels
MIMO system capacity： linear estimation
maximum instantaneous mutual information
