Performance Analysis of Cognitive Two-Way Networks with Interference from Primary User over Nakagami-m Fading Channels

Hoang Van Toan; Vo Nguyen Quoc Bao

doi:10.31130/jst.2017.35

Hoang Van Toan Le Quy Don Technical University, Vietnam
Vo Nguyen Quoc Bao Posts and Telecommunications Institute of Technology, Vietnam

DOI: https://doi.org/10.31130/jst.2017.35

Abstract

A cognitive underlay two-way relay network taking into account interference links from primary transmitter to secondary receivers over Nakagami-m fading channels is analyzed in this article. In this model, a secondary system including two terminal nodes exchanges data through a decode-and-forward (DF) relay node. Under the underlay approach, all secondary transmitter must adjust transmit power to protect the primary communications. We derive the exact and asymptotic closed-form expression for the secondary system outage probability over Nakagami-m fading channels showing the system diversity. Monte-Carlo simulation are performed to verify the analysis results as well as to show the system characteristics

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