On Sequential Delay Estimation in Wideband Digital Communication Systems

Yossef Steinberg, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The problem of estimating the symbol timing in wideband data communication signals is considered. Conventional approaches to this problem suffer from several draw-backs, including possible lack of consistency due to multiple extrema in the error surface, and very slow convergence due to exceedingly sharp waveform correlation functions. In this work, sequential detection-estimation algorithms that alleviate these problems are constructed and analyzed. These algorithms are based on two techniques: the use of regularization (i.e., pre-filtering) to produce a consistent initial estimate at the expense of higher mean-square error, and the coupling of recursive maximum-likelihood with this consistent estimator to produce the desired goal—a recursive consistent and efficient estimator.

Original languageEnglish (US)
Pages (from-to)1327-1333
Number of pages7
JournalIEEE Transactions on Information Theory
Issue number5
StatePublished - Sep 1994

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences


  • Delay estimation
  • consistent sequential estimation
  • spread-spectrum communications


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