Maximum-likelihood frequency recovery for OFDM signals transmitted over multipath fading channels

Author

Chiavaccini, Eugenio ; Vitetta, Giorgio M.

Author_Institution

Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Italy

Volume

52

Issue

2

fYear

2004

Firstpage

244

Lastpage

251

Abstract

In this paper, a novel feedback frequency synchronizer for orthogonal frequency-division multiplexing signals transmitted over multipath fading channels is described. Its derivation is based on maximum-likelihood estimation techniques and assumes an approximate statistical knowledge of the communication channel. The performance of the proposed algorithm is assessed by computer simulation, and is compared with that provided by other synchronization algorithms and with Cramer-Rao bounds.

Keywords

OFDM modulation; approximation theory; fading channels; maximum likelihood estimation; multipath channels; synchronisation; Cramer-Rao bounds; OFDM signals; computer simulation; feedback frequency synchronizer; maximum-likelihood estimation; maximum-likelihood frequency recovery; multicarrier modulation; multipath fading channels; orthogonal frequency division multiplexing; statistical knowledge approximation; AWGN; Communication channels; Fading; Feedback; Frequency division multiplexing; Frequency estimation; Frequency synchronization; Maximum likelihood detection; Maximum likelihood estimation; OFDM;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2003.822706

Filename

1269972