DocumentCode
1185078
Title
Modified nonlinear least square approaches to carrier frequency offset estimation in OFDM systems
Author
Ma, Yugang
Author_Institution
Singapore Res. Lab., SONY Electron. (S) Pte. Ltd., Singapore, Singapore
Volume
7
Issue
4
fYear
2003
fDate
4/1/2003 12:00:00 AM
Firstpage
177
Lastpage
179
Abstract
Two modified nonlinear least square (NLS) estimators for carrier frequency offset (CFO) in orthogonal frequency-division multiplexing (OFDM) systems are proposed. In the modified NLS CFO estimators, slot elements in an OFDM block symbol are weighted in terms of their received energies. Simulation results show that the proposed new estimators outperform the original one especially in a low signal-to-noise ratio range.
Keywords
OFDM modulation; frequency estimation; least squares approximations; noise; OFDM block symbol; OFDM systems; SNR; carrier frequency offset estimation; low signal-to-noise ratio; modified NLS CFO estimators; modified nonlinear least square estimators; orthogonal frequency-division multiplexing; received energy; simulation results; slot elements; AWGN; Additive white noise; Digital video broadcasting; Discrete Fourier transforms; Frequency division multiplexing; Frequency estimation; Gaussian noise; Least squares approximation; OFDM; Signal to noise ratio;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2003.811193
Filename
1195502
Link To Document