Symbol Error Rate Analysis and Power Allocation for Adaptive Relay Selection Schemes

  • Authors:
  • Tianxi Liu;Lingyang Song;Bingli Jiao;Yan Zhang

  • Affiliations:
  • School of Electronics Engineering and Computer Science, Peking University, Beijing, China 100871;School of Electronics Engineering and Computer Science, Peking University, Beijing, China 100871;School of Electronics Engineering and Computer Science, Peking University, Beijing, China 100871;Simula Research, Oslo, Norway

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2011

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Abstract

In this paper, we analyse the symbol error rate (SER) performance of adaptive relay selection schemes (ARS) in a general dual-hop multiple-relay network. Specifically, we provide a closed-form SER expression for ARS which is tight over the whole signal-to-noise ratio (SNR) region. In addition, the derived SER can be readily extended to conventional relay selection schemes, i.e. amplify-and-forward relay selection (AF-RS), perfect decode-and-forward relay selection (PDF-RS), adaptive decode-and-forward relay selection (ADF-RS), and cooperative-maximum-ratio-combining decode-and-forward relay selection (CDF-RS). Transmit power allocation based on the simplified SER is presented to improve the system performance. The analytical results are verified by computer simulations.