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Maximum likelihood carrier frequency offset estimation algorithm with adjustable frequency acquisition region
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DOI：10.1016/j.jfranklin.2018.01.028.png)
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This study presents a simple yet effective carrier frequency offset (CFO) estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems. At the transmitter, the proposed algorithm uses null subcarriers to render the OFDM signal periodic in the time domain. At the receiver, these periodic time samples become CFO-bearing signals, which can be adopted to develop the maximum likelihood (ML) CFO estimation algorithm accordingly. In addition to providing reliable and efficient CFO estimation, the proposed algorithm has an adjustable acquisition region linearly proportional to the order of the null subcarrier insertion scheme. (C) 2018 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.
Keyword:
INTERFERENCE SELF-CANCELLATION
OFDM SYSTEMS
CFO ESTIMATION
SCHEME
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3.7
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6.4K
被引数:
1.5W
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A Subspace-Based CFO Estimation Algorithm for General ICI Self-Cancellation Precoded OFDM Systems
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