One-shot blind channel estimation for OFDM systems over frequency-selective fading channels

Anas Saci, Arafat Al-Dweik, Abdallah Shami, Youssef Iraqi

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

This paper presents a blind channel estimation (BCE) technique for orthogonal frequency division multiplexing communications systems. The proposed system is based on modulating particular pairs of subcarriers using amplitude shift keying and phase shift keying, which enables the realization of a decision-directed one-shot BCE (OSBCE), with complexity and accuracy that are comparable to pilot-based channel estimation techniques. The performance of the proposed estimator is evaluated in terms of the mean squared error (MSE), where an accurate analytical expression is derived and verified using Monte Carlo simulation under various channel conditions. The obtained results show that the MSE of the proposed OSBCE is comparable to pilot-based estimators, which confirms the efficiency of the proposed OSBCE.

Original languageBritish English
Pages (from-to)5445-5458
Number of pages14
JournalIEEE Transactions on Communications
Volume65
Issue number12
DOIs
StatePublished - Dec 2017

Keywords

  • Channel estimation
  • Error rate analysis
  • Frequency-selective fading
  • Mean squared error
  • OFDM

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