Power Allocation in Decode-and-Forward Cooperative Networks via SEP Minimization

被引：0
|
作者：
Khabbazibasmenj, Arash [1 ]
Vorobyov, Sergiy A. [1 ]
机构：
[1] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada
来源：
2009 3RD IEEE INTERNATIONAL WORKSHOP ON COMPUTATIONAL ADVANCES IN MULTI-SENSOR ADAPTIVE PROCESSING (CAMSAP) | 2009年
关键词：
Power allocation; decode-and-forward relay networks; cooperative communications; convex optimization; PERFORMANCE ANALYSIS; WIRELESS NETWORKS; DIVERSITY;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, the problem of optimal power allocation among the relays in two-hop decode-and-forward cooperative networks is considered, and a new power allocation scheme which minimizes the average symbol error probability under limited total power of all relays and limited maximum powers of individual relays is developed. It is shown that the corresponding power allocation optimization problem is convex and, therefore, can be efficiently solved using interior point methods. Moreover, an approximate closed-form solution in the form of water-filling is also developed. Simulation results confirm the improved performance of the proposed power allocation scheme over other schemes.
引用
收藏
页码：328 / 331
页数：4
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