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A Blind CFO Estimator Based on Smoothing Power Spectrum for OFDM Systems

IEEE Transactions on Communications(2009)

State Key Laboratory on Intelligent Technology and Systems

Cited 34|Views5
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.
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Key words
Carrier frequency offset (CFO),power spectrum,orthogonal frequency-division multiplexing (OFDM)
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