Blind adaptive channel estimation in OFDM systems

Xenofon G. Doukopoulos, George V. Moustakides

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

We consider the problem of blind channel estimation in zero padding OFDM systems, and propose blind adaptive algorithms in order to identify the impulse response of the multipath channel. In particular, we develop RLS and LMS schemes that exhibit rapid convergence combined with low computational complexity and numerical stability. Both versions are obtained by properly modifying the orthogonal iteration method used in Numerical Analysis for the computation of singular vectors. With a number of simulation experiments we demonstrate the satisfactory performance of our adaptive schemes under diverse signaling conditions.

Original languageEnglish (US)
Article number1673083
Pages (from-to)1716-1725
Number of pages10
JournalIEEE Transactions on Wireless Communications
Volume5
Issue number7
DOIs
StatePublished - Jul 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Keywords

  • Adaptive algorithms
  • Blind channel estimation
  • OFDM
  • Orthogonal iteration
  • Power iteration
  • Zero padding

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