Simplified Relay Selection and Power Allocation in Cooperative Cognitive Radio Systems

被引：179

作者：

Li, Liying ^{[1
]}

Zhou, Xiangwei ^{[2
]}

Xu, Hongbing ^{[1
]}

Li, Geoffrey Ye ^{[2
]}

Wang, Dandan ^{[3
]}

Soong, Anthony ^{[3
]}

机构：

[1] Univ Elect Sci & Technol China, Sch AE, Chengdu 610054, Peoples R China

[2] Georgia Inst Technol, Sch ECE, Atlanta, GA 30332 USA

[3] Huawei Technol, Wireless Adv Res, Plano, TX USA

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2011年 / 10卷 / 01期

基金：

美国国家科学基金会;

关键词：

Cooperative cognitive radio system; power allocation; relay selection; system throughput;

D O I：

10.1109/TWC.2010.101810.100311

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, we investigate joint relay selection and power allocation to maximize system throughput with limited interference to licensed (primary) users in cognitive radio (CR) systems. As these two problems are coupled together, we first develop an optimal approach based on the dual method and then propose a suboptimal approach to reduce complexity while maintaining reasonable performance. From our simulation results, the proposed approaches can increase the system throughput by over 50%.

引用

页码：33 / 36

页数：4

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