Performance of spectrum sensing using Welch's periodogram in rayleigh fading channel

Marja Matinmikko, Heli Sarvanko, Miia Mustonen, Aarne Mämmelä

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    20 Citations (Scopus)

    Abstract

    In this paper we present theoretical performance evaluation of spectrum sensing with energy detection using Welch’s periodogram for cognitive radio systems. We generalize the theoretical expressions for the probability of detection and the probability of false alarm of energy detection in Rayleigh fading channel to the case of Welch’s periodogram. We verify the theoretical results by simulations both in single node and cooperative sensing scenarios. In particular, cooperation is crucial in fading environment. Protection of primary systems from harmful interference is the key requisite for the introduction of cognitive radio systems into the future spectrum regulatory framework if the systems are deployed on the same spectrum bands. The primary user’s concern is how often it could be susceptible to potential interference from the cognitive radio system, which, as we show, is dependent on the probability of detection. Therefore, performance evaluation and in particular the probability of detection is critical in assessing the potential capabilities of the future cognitive radio systems.
    Original languageEnglish
    Title of host publication2009 4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages1-5
    ISBN (Electronic)978-1-4244-3424-4
    ISBN (Print)978-1-4244-3423-7
    DOIs
    Publication statusPublished - 2009
    MoE publication typeA4 Article in a conference publication
    Event4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications - Hannover, Germany
    Duration: 22 Jun 200924 Jun 2009
    Conference number: 4

    Conference

    Conference4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications
    CountryGermany
    CityHannover
    Period22/06/0924/06/09

    Keywords

    • Rayleigh channels
    • cognitive radio
    • frequency allocation
    • spectrum sensing
    • fading
    • interference
    • FCC
    • Welch periodogram

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  • Cite this

    Matinmikko, M., Sarvanko, H., Mustonen, M., & Mämmelä, A. (2009). Performance of spectrum sensing using Welch's periodogram in rayleigh fading channel. In 2009 4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications (pp. 1-5). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/CROWNCOM.2009.5188937