Performance optimization of cooperative spectrum sensing in cognitive radio networks

Jin Lai, Eryk Dutkiewicz, Ren Ping Liu, Rein Vesilo

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

    10 Citations (Scopus)

    Abstract

    Cooperative spectrum sensing has been proposed to significantly improve spectrum sensing accuracy by taking advantage of the cooperation among multiple secondary users (SUs). Most of existing work assumes that all SUs have the same SNR values of primary users' signal while the difference of SNR values among SUs, although it is very common in practice, is largely ignored. In this paper, we investigate two cooperative spectrum sensing scenarios where multiple geographically diverse SUs may have different SNR values. In the first scenario a cognitive radio network (CRN) with a single primary channel is considered. We aim to optimize the individual thresholds of SUs to maximize SU throughput subject to the constraint of missed detection probability. In the second scenario where there are multiple channels in a CRN, we jointly optimize the allocation of SUs to sense different channels and the individual detection thresholds of SUs. Our objective is to maximize total SU throughput over multiple channels while guaranteeing the missed detection probability below a given threshold. Simulation results demonstrate that our proposed schemes achieve significant improvements in SU throughput over the existing schemes.

    Original languageEnglish
    Title of host publication2013 IEEE Wireless Communications and Networking Conference, WCNC 2013
    Place of PublicationPiscataway, NJ
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages631-636
    Number of pages6
    ISBN (Print)9781467359399
    DOIs
    Publication statusPublished - 2013
    Event2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 - Shanghai, China
    Duration: 7 Apr 201310 Apr 2013

    Other

    Other2013 IEEE Wireless Communications and Networking Conference, WCNC 2013
    CountryChina
    CityShanghai
    Period7/04/1310/04/13

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  • Cite this

    Lai, J., Dutkiewicz, E., Liu, R. P., & Vesilo, R. (2013). Performance optimization of cooperative spectrum sensing in cognitive radio networks. In 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013 (pp. 631-636). [6554637] Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/WCNC.2013.6554637