Optimal One-Dimensional Relay Placement in Cognitive Radio Networks

摘要：

In this work, we find the optimal relay location for a secondary user in a cognitive radio network subject to outage constraints. With selection decode-and-forward relay protocol, we formulate this problem as a nonlinear optimization problem, and then derive an approximation formulation that gives a close-optimal relay location, which means that we can use the approximation instead to solve the relay placement problem in cognitive radio networks. We find that the optimal relay location is determined by the relative locations of the primary destination, the secondary source and the secondary destination. Moreover, we analyze the sensitivity of optimal relay location to other key parameters such as path loss exponent, interference floor and outage constraint of the primary user, and outage constraint of the secondary user.

作者: Junhua Zhu Jianwei Huang Wei Zhang

作者单位: Department of Information Engineering The Chinese University of Hong Kong, Hong Kong School of Electrical Engineering and Telecommunications The University of New South Wales, Sydney, A

会议类型: 国际会议

会议名称: 2010年无线通信与信号处理国际会议

会议地点: 上海

会议语种:英文

页码: 1-6

在线出版日期: 2010-10-20（万方平台首次上网日期，不代表论文的发表时间）