Complex optimal sequences with constant magnitude for fast channel estimation initialization

Author

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

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong

Volume

46

Issue

3

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

305

Lastpage

308

Abstract

Optimal sounding sequences which satisfy a certain autocorrelation property are useful for fast channel estimation techniques which are based on noniterative channel sounding methods. 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

Keywords

correlation methods; parameter estimation; sequences; signal synthesis; telecommunication channels; autocorrelation function; complex optimal sequences; constant magnitude; fast channel estimation initialization; indirect sequence construction method; minimum alphabet sets; nonperiodic optimal sequences; periodic optimal sequences; AWGN; Acoustic noise; Additive white noise; Autocorrelation; Channel estimation; Convergence; Equations; Least squares approximation; Power amplifiers; Transmitters;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.662635

Filename

662635