摘要
为了分析信道估计误差对信道容量的影响,结合MIMO系统接收端信道估计误差的特点,重新构建了MIMO信道的统计模型。利用Wishart分布的性质,推导了当MIMO信道矩阵满秩时,仅接收端已知信道CSI情况下系统信道容量的下限。仿真结果表明,MIMO系统信道容量对信道估计误差比较敏感。
Based on the characteristics of the channel estimation error of MIMO receiver side, the statistic model of MIMO channel is reconstructed to analyze the impact of channel estimation error on the channel capacity. The lower bound on the capacity is derived by using the properties of Wishart distribution for the full rank channel matrix. The simulation results demonstrate that the channel capacity of MIMO system is sensitive to the estimation error.
出处
《现代电子技术》
2010年第19期19-21,共3页
Modern Electronics Technique