Power allocation for cognitive OFDM radio networks under primary users outage probability constraint

被引：0
|
作者：
Tang, Lun [1 ,2 ]
Wang, Huan [2 ]
Chen, Qian-Bin [2 ]
Zeng, Xiao-Ping [1 ]
机构：
[1] College of Communication Engineering, Chongqing University, Chongqing 400044, China
[2] Key Laboratory of Mobile Communication Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
来源：
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2010年 / 33卷 / 01期
关键词：
Lagrange methods - Optimal power allocation - Optimal solutions - Orthogonal frequency division multiplexing systems - Outage probability - Outage probability constraints - Power allocations - Transmission rates;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The optimal power allocation strategy of cognitive orthogonal frequency division multiplexing (OFDM) system is studied. In order to limit primary user s outage probability, the optimization is formulated maximizing the capacity of cognitive user under the constraint of outage probability at the primary receiver, and the optimal solution to the problem is obtained by utilizing the Lagrange method. Simulation shows that this scheme can efficiently limit primary user s outage probability to its tolerable range while maximizing secondary user s transmission rate.
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页码：120 / 123
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