cogcom 17(11): e4

Research Article

Spectrum Sensing and Throughput Analysis for Full-Duplex Cognitive Radio with Hardware Impairments

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  • @ARTICLE{10.4108/eai.31-5-2017.152556,
        author={A. Nasser and A. Mansour and K. C. Yao and H. Abdallah and A. Abdul Ghani},
        title={Spectrum Sensing and Throughput Analysis for Full-Duplex Cognitive Radio with Hardware Impairments},
        journal={EAI Endorsed Transactions on Cognitive Communications},
        volume={3},
        number={11},
        publisher={EAI},
        journal_a={COGCOM},
        year={2017},
        month={5},
        keywords={Cognitiv e Radio, Full-Duplex, Self -Interf erence Cancella tion, Non-Linearity Distortion, Spectrum Sensing, Throughput Anal ysis},
        doi={10.4108/eai.31-5-2017.152556}
    }
    
  • A. Nasser
    A. Mansour
    K. C. Yao
    H. Abdallah
    A. Abdul Ghani
    Year: 2017
    Spectrum Sensing and Throughput Analysis for Full-Duplex Cognitive Radio with Hardware Impairments
    COGCOM
    EAI
    DOI: 10.4108/eai.31-5-2017.152556
A. Nasser1,2,3,*, A. Mansour1, K. C. Yao2, H. Abdallah3, A. Abdul Ghani
  • 1: LABSTIC C UMR CNRS 6285, ENSTA Bretagne, 2 Rue François Verny, 29806 Brest , France
  • 2: LABSTIC C UMR CNRS 6285, Univ ersité de Bretagne Occiden tale, 6 Av. Le Gorg eu, 29238 Brest , France
  • 3: Computer Science Departmen t, American Univ ersity of Cul ture and Educa tion, Beirut , Lebanon
*Contact email: abbas.nasser@univ-brest.fr

Abstract

In Full-d uplex Cognitiv e Radios, the silen t period of the Secondary User (SU) during the Spectrum Sensing can be elimina ted by appl ying the Self -Interf erence Cancella tion (SIC). Due to the channel estima tion error and the hardw are imperf ections (the Phase Noise and the Non-Linear Distortion (NLD)) SIC is not perf ectl y perf ormed and resul ts in the Resid ual Self -Interf erence (RSI) which a ects the Spectrum Sensing reliability . In this paper , the e ect of RSI on Spectrum Sensing is anal yticall y deriv ed by expressing the detection (pd ) and false alarm (pf a) probabilities under FD in terms of the ones under Half -Duplex (HD) (where SU shoul d remain silen t during the Spectrum Sensing period). In addition, an algorithm is proposed to suppress the NLD and improv es the Spectrum Sensing perf ormance. Hereinafter , the SU throughput under FD is anal ysed comparing to HD by deriving the upper and lower bounds to be respected by pf a and pd respectiv ely in order to make FD beneficia rela tiv e to HD.