Distributed space-time block code over mixed rayleigh and rician frequency-selective fading channels

  • Authors:
  • Quoc-Tuan Vien;Le-Nam Tran;Een-Kee Hong

  • Affiliations:
  • School of Electronics and Information, Kyung Hee University, Yongin, Geonggi, Republic of Korea and School of Engineering and Computing, Glasgow Caledonian University, Glasgow, UK;School of Electronics and Information, Kyung Hee University, Yongin, Geonggi, Republic of Korea;School of Electronics and Information, Kyung Hee University, Yongin, Geonggi, Republic of Korea

  • Venue:
  • EURASIP Journal on Wireless Communications and Networking
  • Year:
  • 2010

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Abstract

This paper proposes a new distributed space-time block code (DSTBC) over frequency-selective fading channels for two-hop amplify and forward relay networks, consisting of a source node (S), two relay nodes (R1 and R2), and a destination node (D). The proposed DSTBC is designed to achieve maximal spatial diversity gain and decoupling detection of data blocks with a lowcomplexity receiver. To achieve these two goals, S uses zero-sequence padding, and relay nodes precode the received signals with a proper precoding matrix. The pairwise error probability (PEP) analysis is provided to investigate the achievable diversity gain of the proposed DSTBC for a general channel model in which one hop is modeled by Rayleigh fading and the other by Rician fading. This mixed Rayleigh-Rician channel model allows us to analyze two typical scenarios where {Ri} are in the neighborhood of either S or D.