摘要
在给出已知信道状态信息(CSI)和未知CSI这2种状况的多输入多输出(MIMO)系统容量的前提下,对MIMO系统容量的互补累计分布函数(CCDF)、遍历容量(ergodic capacity)、中断容量(outage capacity)以及MIMO信道相关情况下的容量进行仿真。仿真结果表明:小信噪比情况下,CSI对MIMO系统容量有着很大的影响,信噪比为0 dB时,对于8发8收MIMO系统,已知CSI可以获得3 b/s/Hz容量增益;在大信噪比的情况下,CSI对MIMO系统容量是一个多余的信息。
Based on the analysis of the capacity of MIMO systems with CSI and without CSI, simulations of complementary cumulative distribution function （CCDF）, ergodic capacity, outage capacity and capacity of correlation channel in MIMO systems are respectively provided. Simulation results show that CSI has great effects on MIMO capacity when SNR is low; CSI is redundant when SNR is high; when SNR is 0dB, 3bit/s/Hz capacity gains in the MIMO system can be obtained with CSI for eight transmit antennas and eight receive antennas.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2007年第7期1-4,9,共5页
Journal of Wuhan University of Technology：Information & Management Engineering
基金
吉林省科技发展计划资助项目(20050530)
国家通信与抗干扰重点实验室研究资助项目(军工)
