DocumentCode
1137877
Title
A blind CFO estimator based on smoothing power spectrum for OFDM systems
Author
Wu, Lu ; Zhang, Xian-Da ; Li, Pei-Sheng ; Su, Yong-Tao
Author_Institution
Dept. of Autom., Tsinghua Univ., Beijing, China
Volume
57
Issue
7
fYear
2009
fDate
7/1/2009 12:00:00 AM
Firstpage
1924
Lastpage
1927
Abstract
Carrier frequency offset (CFO) estimation is a critical problem in orthogonal frequency-division multiplexing (OFDM) systems. This letter proposes a blind CFO estimator based on smoothing the signal power spectrum. A closed-form CFO estimate is also presented, which greatly reduces the computational complexity of the proposed method. Analysis and simulation results show that the proposed estimator is very effective for OFDM systems.
Keywords
OFDM modulation; computational complexity; smoothing methods; OFDM; blind carrier frequency offset estimator; computational complexity; orthogonal frequency-division multiplexing systems; signal power spectrum smoothing; Analytical models; Bandwidth; Computational complexity; Computational modeling; Discrete Fourier transforms; Frequency division multiplexing; Frequency estimation; Information science; OFDM; Power smoothing; Carrier frequency offset (CFO), power spectrum, orthogonal frequency-division multiplexing (OFDM);
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOMM.2009.07.070067
Filename
5165383
Link To Document