天线相关性对莱斯衰落下的MIMO相关信道容量的影响  

Effect of antenna correlation on MIMO correlated channel capacity under Rice fading

作　　者：任晶秋[1] 王秀芳[1] 陈雪松[1] 张光华[1] 

机构地区：[1]大庆石油学院电气信息工程学院,黑龙江大庆163318

出　　处：《大庆石油学院学报》2009年第1期116-118,共3页Journal of Daqing Petroleum Institute

基　　金：黑龙江省科技计划项目(GZ07A102)

摘　　要：利用直射信道和瑞利衰落信道模型构造莱斯信道模型,给出莱斯衰落情况下MIMO系统各态历经容量计算公式.仿真结果表明,天线间距越大,来波角度扩展越宽,平均达到角越接近阵列垂线方向,相关因数越小,信道各态历经容量越大;反之,相关因数越大,信道各态历经容量越小,且随着衰落因子的增加,系统的信道容量逐渐减小.Rice channel was constructed by using LOS and Rayleigh channel models,the calculation formula of MIMO ergodic capacity was derived in the case of Rice fading,simulation results shows that the larger the antenna interval is,the wider is the extension of the angle of arrival,and the more the average angle of arrival is close to the perpendicular direction of array,the smaller is the correlation coefficient,and the weaker the spatial correlation is,the larger the ergodic capacity of the channel is and vice versa.With the increase of the fading factor,the channel capacity decreases gradually.

关 键 词：莱斯衰落 相关系数 MIMO相关信道 各态历经容量 

分 类 号：TN929[电子电信—通信与信息系统]