Frequency offset estimation in OFDM using sample covariance

Author

Levin, G. ; Wulich, D.

Author_Institution

Dept. of Electr. Eng. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Volume

2

fYear

1998

Firstpage

688

Abstract

We consider the performance of the parametric weighted least square (PWLS) algorithm for frequency offset estimation in orthogonal frequency-division multiplexing (OFDM). No training sequence or redundant information is needed. The correlation between symbols is achieved due to channel spreading, which is assumed to be a linear time invariant (LTI) filter with known impulse response. We show that the frequency estimator based on a PWLS algorithm may be used in a tracking mode of the OFDM receivers

Keywords

OFDM modulation; covariance analysis; filtering theory; frequency estimation; least squares approximations; receivers; signal sampling; OFDM receivers; PWLS algorithm; channel spreading; frequency offset estimation; impulse response; linear time invariant filter; orthogonal frequency-division multiplexing; parametric weighted least square algorithm; sample covariance; symbols correlation; tracking mode; AWGN; Baseband; Demodulation; Frequency estimation; Laboratories; Least squares approximation; Mathematical model; Nonlinear filters; OFDM; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1998. MILCOM 98. Proceedings., IEEE

Print_ISBN

0-7803-4506-1

Type

conf

DOI

10.1109/MILCOM.1998.722214

Filename

722214