Coherent Signaling for Full-Duplex Relay Channel with Self-Interference

Zhengchuan Chen, Tony Q.S. Quek

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


To improve the spectral efficiency (SE), coherent signaling is investigated for full-duplex relay channel (FDRC) in the presence of residual self-interference. First, we propose a novel coherent amplify-forward scheme and derive the SE achieved by both forward decoding and backward decoding. Condition on selecting forward/backward decoding is clearly given. Then, we elaborate the signal design for coherent decode-forward scheme and derive the optimal correlation coefficient for signaling. The optimal relay power that maximizes the SE is obtained in the closed form. Representative numerical results show that coherent signaling brings significant SE gain for FDRC.

Original languageEnglish
Article number7496951
Pages (from-to)1792-1795
Number of pages4
JournalIEEE Communications Letters
Issue number9
Publication statusPublished - 2016 Sep

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


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