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Wireless Personal Communications

, Volume 94, Issue 4, pp 3285–3302 | Cite as

Influence of Channel Information Imperfection on Outage Probability of Cooperative Cognitive Networks with Partial Relay Selection

  • Khuong Ho-Van
Article

Abstract

Influence of channel information imperfection on outage probability of cooperative cognitive networks with partial relay selection over independent and non-identical Rayleigh fading channels and under peak transmit power constraint and interference power constraint is thoroughly analyzed in this paper. To eliminate time-consuming simulations, we propose both exact and asymptotic outage probability expressions in closed-form, which facilitate in quickly evaluating this influence in key operation parameters and acquiring useful insights into performance limits. For comparison, we also derive similar expressions for two benchmark communications schemes in cognitive radio networks, namely direct transmission and dual-hop communications with partial relay selection. Various results show considerable system performance deterioration and performance saturation owing to channel information imperfection, and superiority of cooperative communications to direct transmission and dual-hop communications.

Keywords

Partial relay selection Channel information imperfection Cognitive radio Maximum transmit power Interference power 

Notes

Acknowledgments

This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under Grant Number 102.04-2014.42.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Telecommunications Engineering DepartmentHoChiMinh City University of TechnologyHoChiMinh CityVietnam

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