Research Article
Power Allocation for Regenerative Cognitive Relay Networks with QoS-guaranteed Primary User
@INPROCEEDINGS{10.4108/icst.chinacom.2014.256408, author={Peng Lan and Guowei Zhang and Fenggang Sun and Jialin Hou}, title={Power Allocation for Regenerative Cognitive Relay Networks with QoS-guaranteed Primary User}, proceedings={9th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={1}, keywords={cognitive radio relay network power allocation outage probability}, doi={10.4108/icst.chinacom.2014.256408} }- Peng Lan
Guowei Zhang
Fenggang Sun
Jialin Hou
Year: 2015
Power Allocation for Regenerative Cognitive Relay Networks with QoS-guaranteed Primary User
CHINACOM
IEEE
DOI: 10.4108/icst.chinacom.2014.256408
Abstract
In this paper, we investigate the problem of optimal power allocation for a two-hop cognitive radio relay network over independent Rayleigh fading channels. We take into consideration of the transmit power limit at the secondary transmitter and relay where the powers are limited to guarantee the quality of service of the primary user. To minimize the secondary outage probability, we re-formulate the power allocation problem with a new set of constraints and achieved the closed form optimal solution. Simulation results confirm the performance improvement of the proposed power allocation scheme.
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