Blind channel estimation using fractional sampling

Sarod Yatawatta, Athina P. Petropulu, Riddhi Dattani

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We consider the problem of blind estimation of a communication channel based on the oversampled channel output. We propose a nonparametric approach that, based on the cyclic spectrum of the output, finds the channel phase response without neither the need of phase unwrapping nor channel length information. For band-limited channels, the cyclic spectrum has limited support. For this case, we propose an approximation for the discretized phase of the cyclic spectrum that, under certain conditions, results in a simpler channel estimation method. The proposed approach is applied to simulated data and real recordings and is compared to existing methods.

Original languageEnglish (US)
Pages (from-to)363-371
Number of pages9
JournalIEEE Transactions on Vehicular Technology
Issue number2
StatePublished - Mar 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


  • Band-limited channel
  • Blind channel estimation
  • Cyclic spectrum
  • Cyclostationary inputs


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