Complex optimal sequences with constant magnitude for fast channel estimation initialization

John C.L. Ng, Khaled Ben Letaief, Ross D. Murch

Research output: Contribution to journalArticle

52 Citations (Scopus)


Optimal sounding sequences which satisfy a certain autocorrelation property are useful for fast channel estimation techniques which are based on noniterative channel sounding methods. In this letter we study optimal sequences consisting of complex symbols with constant magnitude. An indirect sequence construction method is derived by considering the phase difference between sequence symbols. Our construction method includes periodic and nonperiodic optimal sequences and provides insight into the nature and properties of optimal sequences that are based on consecutive roots-of-unity phase difference sequences.

Original languageEnglish
Pages (from-to)305-308
Number of pages4
JournalIEEE Transactions on Communications
Issue number3
Publication statusPublished - 1 Dec 1998



  • Channel sounding
  • Complex optimal sequences
  • Fast channel estimation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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