Izvorni znanstveni članak
https://doi.org/10.20532/cit.2016.1002664
Research on Outage Performance Optimization of Cognitive Relay Network with Cooperative Sensing
Yaolian Song
; Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Yunnan, China
YuHao Li
; Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Yunnan, China
Shujuan Wang
; Faculty of Information Engineering and Automation Kunming
Ya Zhang
; Faculty of Information Engineering and Automation Kunming
Sažetak
In this work, cooperative spectrum sensing technology is applied to optimize the outage probability of cognitive relay networks. The outage performance optimization problem of cognitive relay networks is resolved by designing the sensing time and fusion rule threshold appropriately. The outage probability by high signal to noise ratio (SNR) approximation under Rayleigh fading channels is derived theoretically, and the solution of optimal fusion rule threshold is given. Theoretical analysis and simulation results illustrate that the optimal sensing time and fusion rule threshold exist to minimize the outage probability. The outage performance of cognitive relay networks is significantly improved under the assistance of cooperative sensing compared with that of non-cooperative sensing scheme.
Ključne riječi
outage probability; fusion rule threshold; SNR; sensing time
Hrčak ID:
161714
URI
Datum izdavanja:
30.6.2016.
Posjeta: 960 *