Distributed transmit power allocation for relay-assisted cognitive-radio systems

被引：0
|
作者：
Mietzner, Jan [1 ]
Lampe, Lutz [1 ]
Schober, Robert [1 ]
机构：
[1] Univ British Columbia, Dept Elect & Comp Engn, Commun Theory Grp, Vancouver, BC V6T 1Z4, Canada
来源：
CONFERENCE RECORD OF THE FORTY-FIRST ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1-5 | 2007年
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
We address the issue of optimal transmit power allocation in relay-assisted cognitive-radio (CR) systems. In particular, we assume that the frequency band chosen for unlicensed spectrum usage is not completely unoccupied, but contains one or more licensed narrowband users. For such a setting, we develop distributed transmit power allocation schemes, which optimize the performance of the CR system, while at the same time the interference experienced by the licensed users is limited. Numerical performance results illustrate that notable improvements compared to non-cooperative transmission are achieved by our proposed schemes.
引用
收藏
页码：792 / 796
页数：5
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