On the Performance of Cognitive Relay Networks Under Primary User's Outage Constraint

被引：56

作者：

Si, JiangBo ^{[1
]}

Li, Zan ^{[1
]}

Chen, XiaoJun ^{[1
]}

Hao, BenJian ^{[1
]}

Liu, ZengJi ^{[1
]}

机构：

[1] Xidian Univ, ISN Lab, Xian 710071, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2011年 / 15卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Cognitive radio; opportunistic relaying; CSI; Rayleigh fading;

D O I：

10.1109/LCOMM.2011.030311.110013

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, we propose two relay selection schemes in cognitive relay networks. According to the proposed schemes, the number of relays involved in the opportunistic relaying is determined by the partial channel state information (CSI) of primary user link and partial CSI between the relays and the primary user receiver, so as to maintain the primary user's outage probability below a predetermined value. The exact outage probabilities of the secondary user are derived over Rayleigh fading channels. Finally, simulation results validate our analysis.

引用

页码：422 / 424

页数：3

共 7 条

[1]

ASGHARI V, 2010, P IEEE ICC

[2] Cooperative communications with outage-optimal opportunistic relaying [J].