Exploiting error-control coding and cyclic-prefix in channel estimation for coded ofdm systems

Ghazi A. Al-Rawi, Tareq Al-Naffouri, Ahmad Bahai, John Cioffi

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

OFDM systems typically use coding and interleaving across subchannels to exploit frequency diversity on frequency-selective channels. This letter presents a low-complexity iterative algorithm for blind and semi-blind joint channel estimation and soft decoding in coded OFDM systems. The proposed algorithm takes advantage of the channel finite delay-spread constraint and the extra observation offered by the cyclic-prefix. It converges within a single OFDM symbol and, therefore, has a minimum latency.

Original languageEnglish (US)
Pages (from-to)388-390
Number of pages3
JournalIEEE Communications Letters
Volume7
Issue number8
DOIs
StatePublished - Jan 1 2003

Keywords

  • Adaptive equalization
  • Blind channel estimation
  • Iterative detection
  • Multicarrier transmission

ASJC Scopus subject areas

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

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