Frequency offset estimation with fast acquisition in OFDM system

Zhongshan Zhang; Ming Zhao; Haiyan Zhou; Yuanan Liu; Jinchun Gao

doi:10.1109/LCOMM.2004.823423

Frequency offset estimation with fast acquisition in OFDM system

Zhongshan Zhang^*, Ming Zhao, Haiyan Zhou, Yuanan Liu, Jinchun Gao

^*Corresponding author for this work

Beijing University of Posts and Telecommunications

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

A new carrier frequency offset estimation scheme in orthogonal frequency-division multiplexing (OFDM) system is proposed. The carrier frequency offset estimation includes acquisition and tracking, and the acquisition range is as large as one half of overall signal bandwidth. The proposed tracking estimator is a maximum-likelihood estimator, and in AWGN channel, the Cramer-Rao lower bound is met at high signal-to-noise ratio (SNR); in multipath channel, the tracking algorithm works well at moderate SNR. Timing synchronization can be also performed during the course of acquisition.

Original language	English
Pages (from-to)	171-173
Number of pages	3
Journal	IEEE Communications Letters
Volume	8
Issue number	3
DOIs	https://doi.org/10.1109/LCOMM.2004.823423
Publication status	Published - Mar 2004
Externally published	Yes

Keywords

Frequency offset estimation
Multipath channel
Orthogonal frequency-division multiplexing (OFDM)

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10.1109/LCOMM.2004.823423

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AU - Zhang, Zhongshan

AU - Zhao, Ming

AU - Zhou, Haiyan

AU - Liu, Yuanan

AU - Gao, Jinchun

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AB - A new carrier frequency offset estimation scheme in orthogonal frequency-division multiplexing (OFDM) system is proposed. The carrier frequency offset estimation includes acquisition and tracking, and the acquisition range is as large as one half of overall signal bandwidth. The proposed tracking estimator is a maximum-likelihood estimator, and in AWGN channel, the Cramer-Rao lower bound is met at high signal-to-noise ratio (SNR); in multipath channel, the tracking algorithm works well at moderate SNR. Timing synchronization can be also performed during the course of acquisition.

KW - Frequency offset estimation

KW - Multipath channel

KW - Orthogonal frequency-division multiplexing (OFDM)

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VL - 8

SP - 171

EP - 173

JO - IEEE Communications Letters

JF - IEEE Communications Letters

IS - 3

ER -

Frequency offset estimation with fast acquisition in OFDM system

Abstract

Keywords

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