Fractionally-spaced equalization and decision feedback sequence detection for diffusive MC

Trang Ngoc Cao, Vahid Jamali, Nikola Zlatanov, Phee Lep Yeoh, Jamie Evans, Robert Schober

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1 Citation (Scopus)

Abstract

In this letter, we consider diffusive molecular communication (MC) systems affected by signal-dependent diffusive noise, inter-symbol interference, and external noise. We design linear and nonlinear fractionally-spaced equalization schemes and a detection scheme which combines decision feedback and sequence detection (DFSD). In contrast to the symbol-rate equalization schemes in the MC literature, the proposed equalization and detection schemes exploit multiple samples of the received signal per symbol interval to achieve lower bit error rates (BERs) than existing schemes. The proposed DFSD scheme achieves a BER which is very close to that achieved by maximum likelihood sequence detection, but with lower computational complexity.

Original languageEnglish
Article number9187645
Pages (from-to)117-121
Number of pages5
JournalIEEE Communications Letters
Volume25
Issue number1
DOIs
Publication statusPublished - Jan 2021

Keywords

  • equalization
  • sequence detection
  • Signal-dependent noise

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