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Amplify-and-Forward Relay Assisting both Primary and Secondary Transmissions in Cognitive Radio Networks over Nakagami-m Fading

By Thi Chu, Hoc Phan and Hans-Jürgen Zepernick


In this paper, we study the performance for the primary and secondary transmissions in cognitive radio networks where the amplify-and-forward (AF) secondary relay helps to transmit the signals for both the primary and secondary transmitters over independent Nakagami-m fading. First, we derive exact closed-form expressions for outage probability and symbol error rate (SER) of the primary network. Then, we derive an exact closed-form expression for outage probability and a closed-form expression of a tight upper bound for SER of the secondary network. Furthermore, we also make a comparison for the performance of the primary system with and without the help of the secondary relay

Topics: telecommunications - general, cognitive radio networks, relaying networks, performance analysis
Publisher: School of Computing/Blekinge Institute of Technology
Year: 2012
DOI identifier: 10.1109/pimrc.2012.6362918
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