Outage Analysis of Cognitive Relay Networks with Interference Constraints in Nakagami-m Channels

This letter evaluates the outage probability of cognitive relay networks based on the underlay approach, while considering the mutual interference between cognitive system and primary system in Nakagami-m fading channels. Closed-form and asymptotic outage expressions are derived. Specifically, we reveal that the diversity is only determined by the fading parameters of the cognitive system. Additionally, the primary network only affects the coding gain of the cognitive system. Finally, it is shown from the simulation results that the derived closed-form expression matches the simulated results perfectly, and the asymptotic analysis keep tight in the high maximum transmit power of cognitive system.

[1]  Daniel Benevides da Costa,et al.  Cognitive Amplify-and-Forward Relay Networks Over Nakagami- $m$ Fading , 2012, IEEE Transactions on Vehicular Technology.

[2]  Dongwoo Kim,et al.  Outage Probability and Achievable Diversity Order of Opportunistic Relaying in Cognitive Secondary Radio Networks , 2012, IEEE Transactions on Communications.

[3]  Daniel Benevides da Costa,et al.  Outage and Diversity of Cognitive Relaying Systems under Spectrum Sharing Environments in Nakagami-m Fading , 2012, IEEE Communications Letters.

[4]  Jiayin Qin,et al.  Outage Performance of Cognitive Relay Networks with Interference from Primary User , 2012, IEEE Communications Letters.

[5]  Alagan Anpalagan,et al.  Decision-Theoretic Distributed Channel Selection for Opportunistic Spectrum Access: Strategies, Challenges and Solutions , 2013, IEEE Communications Surveys & Tutorials.

[6]  Trung Quang Duong,et al.  Cognitive Relay Networks With Multiple Primary Transceivers Under Spectrum-Sharing , 2012, IEEE Signal Processing Letters.

[7]  Caijun Zhong,et al.  Outage Analysis of Decode-and-Forward Cognitive Dual-Hop Systems With the Interference Constraint in Nakagami-$m$ Fading Channels , 2011, IEEE Transactions on Vehicular Technology.

[8]  Minghua Xia,et al.  Cooperative AF Relaying in Spectrum-Sharing Systems: Outage Probability Analysis under Co-Channel Interferences and Relay Selection , 2012, IEEE Transactions on Communications.

[9]  Yu. A. Brychkov,et al.  Integrals and series , 1992 .

[10]  Wei Xu,et al.  Outage Probability of Decode-and-Forward Cognitive Relay in Presence of Primary User's Interference , 2012, IEEE Communications Letters.

[11]  Alagan Anpalagan,et al.  Opportunistic Spectrum Access in Unknown Dynamic Environment: A Game-Theoretic Stochastic Learning Solution , 2012, IEEE Transactions on Wireless Communications.

[12]  Joseph Lipka,et al.  A Table of Integrals , 2010 .

[13]  Yu-Dong Yao,et al.  An Adaptive Cooperation Diversity Scheme With Best-Relay Selection in Cognitive Radio Networks , 2010, IEEE Transactions on Signal Processing.