On the Outage Capacity of MIMO Systems with Periodic Feedback  

作　　者：LI Weihua JIAO Bingli 

机构地区：[1]Department of Electronics, Peking University, Beijing 100871, China

出　　处：《Chinese Journal of Electronics》2010年第2期333-338,共6页电子学报（英文版）

摘　　要：This paper considers the Multiple-inputmultiple-output （MIMO） systems with periodic feedback under the assumption that the channel state remains quasistatic within a fading block and varies from one block to the next based on Markov random process. It is assumed that the Channel state information （CSI） is perfectly known at the receiver and fed back to the transmitter once every period. Given the feedback-capacity constraint in terins of maximum number of feedback bits per block, the relationship between the outage capacity and the feedback rate is analyzed. The analysis shows that the outage capacity is a non-monotonic convex function of the feedback rate and there exists the maximum value of the outage capacity. Then, to maximize the outage capacity, the optimal feedback rates are given by numerical results.

关 键 词：Outage capacity Multiple-inputmultiple-output （MIMO） Periodic feedback. 

分 类 号：O314[理学—一般力学与力学基础] TP273[理学—力学]