A Blind Feedforward Frequency Offset Estimator for OFDM Systems in Multipath Channels

Author

Fusco, Tilde ; Tanda, Mario

Author_Institution

Dipartimento di Ingegneria Elettronica e delie Telecomunicazioni, Univ. di Napoli Federico II

fYear

2006

fDate

2-5 July 2006

Firstpage

1

Lastpage

5

Abstract

In this paper we consider the problem of blind feedforward carrier-frequency offset (CFO) estimation for orthogonal frequency division multiplexing (OFDM) systems in multipath channels. Specifically, by exploiting the least-squares approach a closed-form blind CFO estimator is derived. The proposed algorithm does not require the knowledge of the channel impulse response and/or the insertion of virtual subcarriers. Computer simulation results show that the derived CFO estimator can outperform previously proposed blind CFO synchronization algorithms

Keywords

OFDM modulation; frequency estimation; least squares approximations; multipath channels; OFDM systems; blind feedforward frequency offset estimator; channel impulse response; least-squares approach; multipath channels; orthogonal frequency division multiplexing; Computer simulation; Dispersion; Feedback; Frequency estimation; Frequency synchronization; Intersymbol interference; Maximum likelihood estimation; Multipath channels; OFDM modulation; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 2006. SPAWC '06. IEEE 7th Workshop on

Conference_Location

Cannes

Print_ISBN

0-7803-9710-X

Electronic_ISBN

0-7803-9711-8

Type

conf

DOI

10.1109/SPAWC.2006.346381

Filename

4153869