Optimal Power Allocation of Cognitive Radio with Incomplete Channel State Information

被引：1
|
作者：
Lu, Luxi [1 ]
Jiang, Wei [1 ]
Xiang, Haige [1 ]
Luo, Wu [1 ]
机构：
[1] Peking Univ, Sch EECS, State Key Lab Adv Opt Commun Syst & Networks, Beijing, Peoples R China
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2011年 / E94B卷 / 05期
关键词：
cognitive radio; interference power constraint; power allocation; FADING CHANNELS; CAPACITY; NETWORKS; LIMITS;
D O I：
10.1587/transcom.E94.B.1502
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：
We propose optimal power allocation schemes for a secondary cognitive user sharing spectrum with a primary user under different interference power constraints in Rayleigh fading channels. Specifically, we consider a practical scenario in which the secondary user has a fixed transmission rate and the instantaneous channel state of the interference channel is not available to the secondary user. Simulation results verify the feasibility of the proposed schemes and evaluate the effective transmission rate loss due to the incomplete channel state information.
引用
收藏
页码：1502 / 1505
页数：4
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