Title :
Capacity Analysis of Cognitive Relay Networks with the PU´s Interference
Author :
Si, JiangBo ; Li, Zan ; Huang, HaiYan ; Chen, JunJie ; Gao, Rui
Author_Institution :
Integrated Service Networks Lab., Xidian Univ., Xian, China
fDate :
12/1/2012 12:00:00 AM
Abstract :
In this letter, with the primary user´s (PU´s) interference, we investigate the performance of the secondary user (SU) in spectrum sharing cognitive relay networks. Considering the correlation among the received interference plus noise ratios (SINRs) at the relays and SU destination, closed-form expressions for the outage probability and capacity of the SU are derived. It is shown that, though the interference from the PU badly degrades the SU´s performance, an increase of the number of relays can compensate the loss. Finally, simulation results are provided to validate our theoretical analysis.
Keywords :
cognitive radio; probability; radiofrequency interference; relay networks (telecommunication); PU interference; SINR; SU destination; closed-form expressions; cognitive relay network capacity analysis; loss compensation; outage probability; primary user interference; received interference plus noise ratios; secondary user; spectrum sharing cognitive relay networks; Capacity planning; Closed-form solutions; Fading; Interference; Relays; Signal to noise ratio; Cognitive relay networks; capacity; outage probability; spectrum sharing;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2012.111412.121978
