Title :
Power allocation and relay selection for cognitive networks with Poisson distributed primary users
Author :
Jihyun Shin ; Dongwoo Kim
Author_Institution :
Dept. of Electron. & Commun. Eng., Hanyang Univ., Ansan, South Korea
Abstract :
In this work, we consider a cooperative cognitive radio network with Poisson distributed primary users. We first provide an optimal power allocation for the secondary user while guaranteeing quality of service of the primary users and analyze the outage probability of the secondary user when the optimal power is given. To minimize the outage probability of the secondary user, relay selection is considered among candidate relays. Since an optimal relay selection scheme needs high processing complexity, we propose a simple suboptimal relay selection strategy with low complexity. Numerical results show that the proposed strategy performs almost the same as the optimal relay selection scheme.
Keywords :
Poisson distribution; cognitive radio; computational complexity; cooperative communication; quality of service; relay networks (telecommunication); Poisson-distributed primary users; cooperative cognitive radio network; optimal power allocation; optimal relay selection scheme; outage probability; processing complexity; quality of service; secondary user; suboptimal relay selection strategy; Quality of service; Receivers; Relays; Cognitive radio; Poisson point processes; outage probability; relay selection;
Conference_Titel :
Advanced Technologies for Communications (ATC), 2014 International Conference on
Print_ISBN :
978-1-4799-6955-5
DOI :
10.1109/ATC.2014.7043464