OFDM blind carrier offset estimation: ESPRIT

Author

Tureli, Ufuk ; Liu, Hui ; Zoltowski, Michael D.

Author_Institution

Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA

Volume

48

Issue

9

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

1459

Lastpage

1461

Abstract

In orthogonal frequency-division multiplex (OFDM) communications, the loss of orthogonality due to the carrier-frequency offset must be compensated before discrete Fourier transform-based demodulation can be performed. This paper proposes a new carrier offset estimation technique for OFDM communications over a frequency-selective fading channel. We exploit the intrinsic structure information of OFDM signals to derive a carrier offset estimator that offers the accuracy of a super resolution subspace method, ESPRIT

Keywords

OFDM modulation; blind equalisers; cellular radio; demodulation; discrete Fourier transforms; fading channels; parameter estimation; synchronisation; ESPRIT; OFDM blind carrier offset estimation; carrier-frequency offset; cellular communications; digital broadcasting; discrete Fourier transform-based demodulation; equalizer; frequency-selective fading channel; intrinsic structure information; multicarrier modulation; multipath channels; orthogonal frequency-division multiplex communications; orthogonality; radio receiver; super resolution subspace method; Bandwidth; Demodulation; Frequency division multiplexing; Frequency estimation; Frequency-selective fading channels; Multipath channels; OFDM modulation; Receivers; Signal resolution; Wireless sensor networks;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.870011

Filename

870011