Adaptive Cooperative Decode-and-Forward Transmission with Power Allocation Under Interference Constraint

被引：0
|
作者：
Tran Trung Duy
Hyung-Yun Kong
机构：
[1] University of Ulsan,
来源：
Wireless Personal Communications | 2014年 / 74卷
关键词：
Adaptive transmission; Cooperative communication; Cognitive underlay network; Interference constraint; Outage probability;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, we examine an adaptive decode-and-forward cooperative protocol under interference constraint. In the proposed protocol, relying on the obtained instantaneous signal-to-noise ratios (SNRs), a direct link or relay link is used to transmit data from the secondary source to the secondary destination. In addition, once the relay link is used, the secondary source and relay must adapt their transmit power to maximize the instantaneous SNR of this link. To evaluate the performance of the proposed protocol, we derive closed-form lower-bound and upper-bound expressions for the outage probability over Rayleigh fading channel. Finally, various Monte-Carlo simulations are presented to verify our analysis and compare the performance of the proposed protocol with that of the direct transmission protocol in underlay cognitive network.
引用
收藏
页码：401 / 414
页数：13
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