Joint symbol timing and channel estimation for OFDM based WLANs

Erik G. Larsson, Guoqing Liu, Jian Li, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

154 Scopus citations


The orthogonal frequency-division multiplexing access technique has recently been attracting considerable interest especially for wireless local area networks (WLAN's). In this letter, we consider the joint estimation of the symbol timing, the channel length and the channel-impulse response. A novel estimation algorithm based on maximum-likelihood principles and the generalized Akaike information criterion is proposed. We provide simulation results to illustrate the performance of our proposed algorithm.

Original languageEnglish (US)
Pages (from-to)325-327
Number of pages3
JournalIEEE Communications Letters
Issue number8
StatePublished - Aug 2001

Bibliographical note

Funding Information:
Manuscript received January 29, 2001. The associate editor coordinating the review of this letter and approving it for publication was Dr. K. Zhang. This work was supported in part by the Swedish Foundation for Strategic Research (SSF) and the National Science Foundation under Grant MIP-9457388.


  • Channel estimation
  • Channel length estimation
  • GAIC
  • Maximum-likelihood
  • OFDM
  • Synchronization


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