Optimal Power Allocation in Cognitive Relay Networks under Different Power Constraints

摘要：

In this paper, we study the optimal power control schemes for fading channels in cognitive relay networks under different power constraints of the primary user. Under the peak power and the average interference power constraints of the primary user, we derive the optimal power allocation strategies to maximize the ergodic achievable rate of the cognitive relay networks when the channel state information is available to both the cognitive transmitter and the receiver. Finally, the numerical results show the feasibility of our proposed power allocation schemes.

关键词： Cognitive radio cooperative communication power allocation decode-and-forward (DF) ergodic achievable rate

作者: Zhihui Shu Wen Chen

作者单位: Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai, China 200240 State Key Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai, China 200240 State Key

会议类型: 国际会议

会议名称: 2010 IEEE International Conference Conferenhce on Wireless Communications,Networking and Information Security(2010 IEEE 无线通信、网络技术与信息安全国际会议 WCNIS)

会议地点: 北京

会议语种:英文

页码: 1-6

在线出版日期: 2010-06-25（万方平台首次上网日期，不代表论文的发表时间）