Optimal duplex mode for DF relay in terms of the outage probability

Taehoon Kwon, Sungmook Lim, Sooyong Choi, Daesik Hong

Research output: Contribution to journalArticlepeer-review

192 Citations (Scopus)


This paper deals with a full-duplex relay (FDR) system over Rayleigh fading channels. The exact outage probability of FDR is derived as a closed form to consider interferences from full duplex. Then, we obtain the conditions of the signal-to-noise ratio (SNR) and the signal to interface ratios (SIRs) for cases of FDR showing a lower outage probability than that of the half-duplex relay (HDR) system under the target outage probability. According to this condition, FDR is superior to HDR with lower SIRs in the low-SNR region rather than in the high-SNR region. In addition, the target outage probability is only satisfied when the SNR and SIRs are within the boundaries. These boundaries vary due to the target rate, the channel states of each link, and the target outage probability.

Original languageEnglish
Article number5466077
Pages (from-to)3628-3634
Number of pages7
JournalIEEE Transactions on Vehicular Technology
Issue number7
Publication statusPublished - 2010 Sept

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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