An iterative frequency estimator for feedforward frequency synchronization

Author

Brown, Tyler ; Wang, Michael

Author_Institution

Motorola Inc, Arlington Heights, IL, USA

Volume

3

fYear

2001

fDate

2001

Firstpage

1713

Abstract

A simple and accurate frequency estimator is proposed. It is applicable to receivers where feedforward frequency synchronization is used such as burst modems. The estimator has a significantly reduced threshold relative to existing phase-based algorithms and its performance is close to that of maximum likelihood estimation. In addition, the mean-squared error performance is within 0.7 dB of the Cramer-Rao bound at SNRs above threshold. Unlike other phase-based methods, the proposed algorithm´s performance is uniform across the frequency range (-π,π)

Keywords

digital radio; feedforward; frequency estimation; iterative methods; mean square error methods; modems; noise; radio receivers; synchronisation; Cramer-Rao bound; SNR; burst modems; digital communication receivers; feedforward frequency synchronization; iterative frequency estimator; maximum likelihood estimation; mean-squared error performance; phase-based algorithms; phase-based methods; Communication systems; Digital communication; Frequency estimation; Frequency synchronization; Gaussian noise; Low pass filters; Maximum likelihood estimation; Modems; Phase estimation; Signal sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944987

Filename

944987