Capacity analysis and power allocation over non-identical MISO Rayleigh fading channels

被引:0
|
作者
Cao, Le [1 ]
Tao, Meixia [1 ,2 ]
Kam, Pooi Yuen [1 ]
机构
[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore
[2] Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai 200240, Peoples R China
关键词
D O I
10.1109/ICC.2008.874
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
We analyze the capacity of a multiple-input single-output system over Rayleigh fading channels. The channels are assumed to be independent and non-identically distributed. Simple, explicit and closed-form expressions of ergodic mutual information and outage probability are obtained. Moreover, two suboptimal but efficient analytical power allocation schemes for mutual information maximization and outage minimization are derived, respectively. In specific, for mutual information maximization, more power is assigned to those channels with higher channel variances, while for outage minimization the power allocation scheme follows the water-filling principle.
引用
收藏
页码:4659 / 4663
页数:5
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