Distributed space-time–frequency block code for cognitive wireless relay networks

Quoc-Tuan Vien, Brian Stewart, Huan Nguyen, Orhan Gemikonakli

    Research output: Contribution to journalArticle

    Abstract

    In this study, the authors consider cooperative transmission in cognitive wireless relay networks (CWRNs) over frequency-selective fading channels. They propose a new distributed space-time–frequency block code (DSTFBC) for a two hop non-regenerative CWRN, where a primary source node and multiple secondary source nodes convey information data to their desired primary destination node and multiple secondary destination nodes via multiple cognitive relay nodes with dynamic spectrum access. The proposed DSTFBC is designed to achieve spatial diversity gain as well as allow for low complexity decoupling detection at the receiver. Pairwise error probability is then analysed to study the achievable diversity gain of the proposed DSTFBC for different channel models including Rician fading and mixed Rayleigh–Rician fading.
    Original languageEnglish
    Pages (from-to)754-766
    Number of pages13
    JournalIET Communications
    Volume8
    Issue number5
    DOIs
    Publication statusPublished - Mar 2014

    Keywords

    • wireless networks
    • space-time–frequency
    • channel models

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