Title :
Simplified Relay Selection and Power Allocation in Cooperative Cognitive Radio Systems
Author :
Li, Liying ; Zhou, Xiangwei ; Xu, Hongbing ; Li, Geoffrey Ye ; Wang, Dandan ; Soong, Anthony
Author_Institution :
Sch. of AE, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fDate :
1/1/2011 12:00:00 AM
Abstract :
In this paper, we investigate joint relay selection and power allocation to maximize system throughput with limited interference to licensed (primary) users in cognitive radio (CR) systems. As these two problems are coupled together, we first develop an optimal approach based on the dual method and then propose a suboptimal approach to reduce complexity while maintaining reasonable performance. From our simulation results, the proposed approaches can increase the system throughput by over 50%.
Keywords :
cognitive radio; power electronics; cooperative cognitive radio system; joint relay selection; power allocation; simplified relay selection; system throughput; Cognitive radio; Interference; Relays; Resource management; Simulation; Throughput; Cooperative cognitive radio system; power allocation; relay selection; system throughput;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2010.101810.100311
