Denoise-and-Forward Two-Path Successive Relaying with DBPSK Modulation

Jie Fan, Lixin Li, Huisheng Zhang, Wei Chen

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

To recover the spectral efficiency (SE) loss caused by the half-duplex mode, this letter proposes a denoise-and-forward two-path successive relaying (DNF-TPSR) scheme, in which channel state information is not required. With differential binary phase-shift keying (DBPSK) modulation, the mixed signals received at the relay are mapped into a denoised symbol, and the destination uses the denoised symbol received in the previous time slot to cancel the inter-relay interference in the current time slot. We derive the end-to-end bit error rate (BER) and the diversity gain, which are validated by the simulation results. Although DNF-TPSR could not achieve the BER of half-duplex relay selection scheme, the SE is significantly improved by our proposed DNF-TPSR. Moreover, the BER and the SE of DNF-TPSR outperform that of direct transmission and full-duplex relaying with residual self-interference exceeding a certain level.

Original languageEnglish
Article number7745965
Pages (from-to)42-45
Number of pages4
JournalIEEE Wireless Communications Letters
Volume6
Issue number1
DOIs
StatePublished - Feb 2017

Keywords

  • BER
  • DBPSK modulation
  • Denoise-and-forward
  • spectral efficiency
  • two-path successive relaying

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