Efficient cooperative spectrum sensing for three-hop cognitive wireless relay networks

Quoc Tuan Vien, Brian Stewart, Huaglory Tianfield, Huan Nguyen

    Research output: Contribution to journalArticle

    Abstract

    This study is concerned with cooperative spectrum sensing (CSS) mechanisms in three-hop cognitive wireless relay networks (CWRNs). The data transmission from a source to a destination is realised with the aid of two layers of cognitive radio (CR) users which are in the transmission coverage of two primary users. The authors first propose a new CSS scheme for a layer of CR users to improve the spectrum-sensing performance by exploiting both local decisions at the CR users and global decisions at the fusion centre. Particularly, the probabilities of missed detection and false alarm for a practical scenario where all sensing, reporting and backward channels suffer from Rayleigh fading are derived.
    Original languageEnglish
    Pages (from-to)119-127
    Number of pages9
    JournalIET Communications
    Volume7
    Issue number2
    DOIs
    Publication statusPublished - Jan 2013

    Keywords

    • wireless systems
    • cooperative spectrum sensing

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