OFDM Signal Recovery in Deep Faded Erasure Channel

Alireza Rahmati, Kaamran Raahemifar, Theodoros Tsiftsis, Alagan Anpalagan, Paeiz Azmi

Research output: Contribution to journalArticle

Abstract

In high-speed digital wireless communication applications, the intersymbol interference (ISI) channel may have spectral nulls or erasures, which may degrade the orthogonal frequency division multiplexing (OFDM) bit error rate (BER) performance. In this paper, we prove that the BER performance of the OFDM system is considerably refined if the erased symbols in erasure channel (or received symbols on the deep-faded subcarriers in Rayleigh fading channel) are estimated based on the rest symbols in each OFDM signal. Also, an oversampled OFDM scheme which is a particular form of the pre-coded OFDM schemes is considered to guarantee high enough sampling rate. Furthermore, a new iterative receiver is proposed for perfect symbol recovery. A comprehensive Monte Carlo simulation study is performed to validate the theoretical results and affirm the superior performance of the oversampled OFDM scheme with the iterative receiver, compared to the typical detector for the OFDM scheme.

Original languageEnglish
JournalIEEE Access
DOIs
Publication statusAccepted/In press - Jan 1 2018

Fingerprint

Orthogonal frequency division multiplexing
Recovery
Bit error rate
Intersymbol interference
Rayleigh fading
Fading channels
Sampling
Detectors
Communication

Keywords

  • Erasure channel
  • intersymbol interference (ISI)
  • Orthogonal Frequency Division Multiplexing (OFDM)

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

Cite this

Rahmati, A., Raahemifar, K., Tsiftsis, T., Anpalagan, A., & Azmi, P. (Accepted/In press). OFDM Signal Recovery in Deep Faded Erasure Channel. IEEE Access. https://doi.org/10.1109/ACCESS.2018.2876646

OFDM Signal Recovery in Deep Faded Erasure Channel. / Rahmati, Alireza; Raahemifar, Kaamran; Tsiftsis, Theodoros; Anpalagan, Alagan; Azmi, Paeiz.

In: IEEE Access, 01.01.2018.

Research output: Contribution to journalArticle

Rahmati, A, Raahemifar, K, Tsiftsis, T, Anpalagan, A & Azmi, P 2018, 'OFDM Signal Recovery in Deep Faded Erasure Channel', IEEE Access. https://doi.org/10.1109/ACCESS.2018.2876646
Rahmati A, Raahemifar K, Tsiftsis T, Anpalagan A, Azmi P. OFDM Signal Recovery in Deep Faded Erasure Channel. IEEE Access. 2018 Jan 1. https://doi.org/10.1109/ACCESS.2018.2876646
Rahmati, Alireza ; Raahemifar, Kaamran ; Tsiftsis, Theodoros ; Anpalagan, Alagan ; Azmi, Paeiz. / OFDM Signal Recovery in Deep Faded Erasure Channel. In: IEEE Access. 2018.
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