Distributed Relay Selection and Power Control in Cognitive Radio Networks with Cooperative Transmission

被引：0

作者：

Luo, Changqing ^{[1
,2
]}

Yu, F. Richard ^{[3
]}

Ji, Hong ^{[1
]}

Leung, Victor C. M. ^{[2
]}

机构：

[1] Beijing Univ Posts & Telecommun, Key Lab Univ Wireless Commun, Minist Educ, Beijing 100088, Peoples R China

[2] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V5Z 1M9, Canada

[3] Carleton Univ, Dept Syst & Comp Engn, Ottawa, ON K1S 5B6, Canada

来源：

2010 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS | 2010年

基金：

中国国家自然科学基金; 加拿大自然科学与工程研究理事会;

关键词：

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, we present a distributed relay selection and power allocation scheme concurrently considering the channel states of all related links and residual energy state of the relay nodes for cooperative transmission in cognitive radio (CR) networks. Specifically, we formulate the CR network with cooperative transmission as a restless bandit system, which has been widely applied in operations research and stochastic control. The channel state and residual energy state are presented by finite state Markov chains. With this stochastic optimization formulation, the optimal policy for relay selection and power allocation is indexable, meaning that the relay with the highest index should be selected. The proposed scheme can achieve the tradeoff between achievable rate and network lifetime. Simulation results are presented to illustrate the performance of the proposed scheme.

引用

页数：5

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