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Wireless Personal Communications
Published in: Wireless Personal Communications 4/2015

01-02-2015

Iterative Blind Carrier Frequency Offset Estimation Based on Orthogonal Projection Approach Under Single Data Block for Interleaved OFDMA Uplink

Authors: Ann-Chen Chang, Chih-Chang Shen

Published in: Wireless Personal Communications | Issue 4/2015

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Abstract

In this letter, an iterative approach based on the orthogonal projection (OP) criterion is presented to estimate carrier frequency offset (CFO) for interleaved orthogonal frequency division multiple access (OFDMA) uplink systems. The proposed estimator includes the center-symmetric trimmed correlation matrix and OP technique. It doesn’t require eigen-decomposition and only needs single OFDMA data block. To reduce computation complexity, the proposed estimator iteratively searches for the correct CFO vector by minimizing the objective function using a first-order Taylor series approximation of the CFO vector with the one initially given. Computer simulation is also provided for illustrating the effectiveness of the proposed iterative blind CFO estimator.
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Metadata
Title
Iterative Blind Carrier Frequency Offset Estimation Based on Orthogonal Projection Approach Under Single Data Block for Interleaved OFDMA Uplink
Authors
Ann-Chen Chang
Chih-Chang Shen
Publication date
01-02-2015
Publisher
Springer US
Published in
Wireless Personal Communications / Issue 4/2015
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-014-2092-5

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