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

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

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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 twohop 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 lowcomplexity 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
Issue number5
Publication statusPublished - 31 Mar 2014
Externally publishedYes


  • frequency selective fading
  • radio communication
  • relay control systems
  • destination nodes
  • dynamic spectrum access
  • frequency-selective fading channels
  • pair-wise error probability
  • secondary sources
  • spatial diversity gain
  • wireless relaying
  • cooperative transmission

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