An improved frequency offset estimator for OFDM applications

Citation
M. Morelli et U. Mengali, An improved frequency offset estimator for OFDM applications, IEEE COMM L, 3(3), 1999, pp. 75-77
Citations number
5
Categorie Soggetti
Information Tecnology & Communication Systems
Journal title
IEEE COMMUNICATIONS LETTERS
ISSN journal
10897798 → ACNP
Volume
3
Issue
3
Year of publication
1999
Pages
75 - 77
Database
ISI
SICI code
1089-7798(199903)3:3<75:AIFOEF>2.0.ZU;2-5
Abstract
An effecient algorithm has been proposed by Schmidl and Cox for carrier fre quency estimation in orthogonal frequency-division multiplexing systems. Th e scheme is based on the transmission of a training symbol composed of two identical halves in the time domain. In this paper we extend this algorithm by considering a training symbol composed of L>2 identical parts, This mak es it possible to achieve re better accuracy at the cost of some increase i n computational load. The estimation range can be made as large as desired without the need of a second training symbol, as required by the Schmidl an d Cox method.