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Performance analysis of multiple-relay cognitive communication system in Rayleigh fading channel

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  • Abdulhamid Zahedi

    (Kermanshah University of Technology)

Abstract

The spectrum scarcity in communication systems has attracted many researches in the area of cognitive communication which is known as a precious solution to overcome this problem. Overlay (OL) and underlay (UL) strategies are two main techniques in the cognitive systems (CSs). On the other side, cooperative communication improves the reliability and capacity of data communications when using the multiple-relay scheme. In this paper, assuming the multiple-relay cooperative cognitive communication system, the quality of service (QoS) parameters as effective capacity (EC) and outage probability (OP) are analyzed in details. A closed-form mathematical expression is obtained for OP and EC in Rayleigh fading channel considering different constraints on the CS such as false detection of busy/idle state of primary user (PU), or interference threshold of secondary user on PU in OL and UL strategies, respectively. Moreover, the comparison of OL and UL strategies in terms of the QoS parameters is done. As will be shown in this paper, simulation and numerical results verify each other and follow the mathematical analysis of the QoS parameters.

Suggested Citation

  • Abdulhamid Zahedi, 2019. "Performance analysis of multiple-relay cognitive communication system in Rayleigh fading channel," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 72(3), pages 389-399, November.
    • Handle: RePEc:spr:telsys:v:72:y:2019:i:3:d:10.1007_s11235-019-00574-8
    DOI: 10.1007/s11235-019-00574-8
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    References listed on IDEAS

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    1. Van Phu Tuan & Hyung Yun Kong, 2018. "Exploiting cooperative relays to enhance the performance of energy-harvesting systems over Nakagami-m fading channels," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 69(4), pages 477-487, December.
    2. S. Poornima & A. V. Babu, 2018. "Performance analysis of energy harvesting cognitive relay networks with primary interference," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 68(3), pages 445-459, July.
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