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Joint impacts of hardware impairments, imperfect CSIs, and interference constraints on underlay cooperative cognitive networks with reactive relay selection

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  • Pham Ngoc Son

    (Ho Chi Minh City University of Technology and Education)

Abstract

In this paper, we investigate joint impacts of hardware impairments, imperfect channel state information (CSI) and interference constraints at secondary users in an underlay decode-and-forward cognitive network with multiple primary receivers, called as JIC protocol. A best secondary relay is derived from the reactive relay selection which maximizes signal-to-interference-and-distortion-and-noise ratios from a candidates relay set to a secondary destination over Rayleigh fading channels. The exact and asymptotic closed-form outage probability expressions are obtained to evaluate the system performance of the JIC protocol, and then are verified by the Monte Carlo simulations. Contributions show performance degradation of the JIC protocol due to the hardware impairments, the imperfect CSIs, and the interference constraints, and the significant performance improvement with respect to optimal impairment levels and optimal relay locations as well as the increase in the number of the secondary relays. In addition, insightful discussions with the conventional direct transmission are provided. Finally, the exact and asymptotic closed-form expressions are valid to the simulation results.

Suggested Citation

  • Pham Ngoc Son, 2019. "Joint impacts of hardware impairments, imperfect CSIs, and interference constraints on underlay cooperative cognitive networks with reactive relay selection," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 71(1), pages 65-76, May.
    • Handle: RePEc:spr:telsys:v:71:y:2019:i:1:d:10.1007_s11235-018-0508-3
    DOI: 10.1007/s11235-018-0508-3
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    References listed on IDEAS

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    1. Khuong Ho-Van, 2017. "On the performance of maximum ratio combining in cooperative cognitive networks with proactive relay selection under channel information errors," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 65(3), pages 365-376, July.
    2. Tran Trung Duy & Pham Ngoc Son, 2017. "A novel adaptive spectrum access protocol in cognitive radio with primary multicast network, secondary user selection and hardware impairments," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 65(3), pages 525-538, July.
    3. Abderrahmane BenMimoune & Fawaz A. Khasawneh & Bo Rong & Michel Kadoch, 2017. "Dynamic joint resource allocation and relay selection for 5G multi-hop relay systems," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 66(2), pages 283-294, October.
    4. N. Hussain & K. Ziri-Castro & D. Jayalath & M. Arafah, 2017. "Decode-to-cooperate: a sequential alamouti-coded cooperation strategy in dual-hop wireless relay networks," Telecommunication Systems: Modelling, Analysis, Design and Management, Springer, vol. 64(2), pages 355-366, February.
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