On blind carrier recovery in time-selective fading channels

Author

Ghogho, Mountr ; Swami, Ananthram ; Durrani, Tariq

Author_Institution

Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK

Volume

1

fYear

1999

fDate

24-27 Oct. 1999

Firstpage

243

Abstract

This paper considers the problem of blind (non-data aided) symbol clock and frequency offset estimation in the context of time-selective fading communication channels. The performance of estimators based on cyclic correlation is analyzed and optimality issues are addressed. Closed-form expressions for the Cramer-Rao bound are developed under the Gaussian assumption. Extensions of the algorithm to staggered modulation (e.g., OQPSK) are studied. In this case, synchronization generally requires fourth-order cyclic statistics.

Keywords

Rician channels; correlation methods; frequency estimation; higher order statistics; optimisation; quadrature phase shift keying; synchronisation; Cramer-Rao bound; Gaussian assumption; OQPSK; Rician channel; algorithm; blind carrier recovery; blind symbol clock; closed-form expressions; cyclic correlation; discrete-time signal model; estimator performance; fourth-order cyclic statistics; frequency offset estimation; nondata aided symbol clock; optimality; staggered modulation; synchronization; time-selective fading channels; time-selective fading communication channels; Additive noise; Autocorrelation; Bandwidth; Clocks; Colored noise; Delay effects; Fading; Frequency estimation; Frequency synchronization; Matched filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems, and Computers, 1999. Conference Record of the Thirty-Third Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-5700-0

Type

conf

DOI

10.1109/ACSSC.1999.832330

Filename

832330