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On the Performance of Quasiorthogonal STBC with Relay Selection and Phase Rotation Techniques for Decode and Forward Cooperative Communications

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  • Nikorn Sutthisangiam
  • Chaiyod Pirak
  • Gerd Ascheid

Abstract

The performance of quasiorthogonal space-time block code with relay-selection and phase-rotation techniques applied to cooperative communications for four communication nodes is investigated. Specifically, by applying relay-selection and phase-rotation techniques, a diversity gain of four can be achieved. In addition, a symbol error rate (SER) performance analysis with closed-form expression and power allocation are investigated and compared with simulation results. The results show that theoretical SER curves are close to the simulation results. In addition, a code rate of the proposed scheme is two times higher than ordinary cooperative communications. The computer simulation results also show a significant probability of error improvement of about 2.8 dB over the conventional decode-and-forward protocol.

Suggested Citation

  • Nikorn Sutthisangiam & Chaiyod Pirak & Gerd Ascheid, 2013. "On the Performance of Quasiorthogonal STBC with Relay Selection and Phase Rotation Techniques for Decode and Forward Cooperative Communications," International Journal of Distributed Sensor Networks, , vol. 9(2), pages 795050-7950, February.
    • Handle: RePEc:sae:intdis:v:9:y:2013:i:2:p:795050
    DOI: 10.1155/2013/795050
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