Title :
Outage Probability and SER of Amplify-and-Forward Cognitive Relay Networks
Author :
Huogen Yu ; Wanbin Tang ; Shaoqian Li
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
This letter considers amplify-and-forward (AF) cognitive relay networks with interference power constraint and transmit power constraint in a spectrum-sharing context. In particular, we impose the interference power constraint on secondary source node, and impose the interference power constraint and the transmit power constraint on secondary relay node. We derive the exact outage probability and the lower bound on symbol error rate (SER) of cognitive transmission over Rayleigh fading channels. Our results show that the outage probability and SER saturation phenomenons occur when the interference power constraint or the transmit power constraint reaches a specified value. Monte Carlo simulations are shown to validate the accuracy of the analytical results.
Keywords :
Monte Carlo methods; Rayleigh channels; amplify and forward communication; cognitive radio; error statistics; probability; radio spectrum management; radiofrequency interference; relay networks (telecommunication); telecommunication power management; AF cognitive relay network; Monte Carlo simulation; Rayleigh fading channel; SER saturation phenomenon; amplify-and-forward cognitive relay network; cognitive transmission; interference power constraint; outage probability; secondary relay node; secondary source node; spectrum-sharing context; symbol error rate; transmit power constraint; Error analysis; Interference; Monte Carlo methods; Protocols; Relays; Signal to noise ratio; Wireless communication; Amplify-and-forward; cognitive relay network; outage probability; symbol error rate;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/WCL.2013.012513.120834
