A blind maximum likelihood carrier frequency offset correction approach for OFDM systems over multipath fading channels

    Authors

    Y. Liu;W. B. Mikhael

    Comments

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    Abbreviated Journal Title

    Circuits Syst. Signal Process.

    Keywords

    carrier frequency offset; independent component analysis; maximum; likelihood; orthogonal frequency division multiplexing; SYNCHRONIZATION; Engineering, Electrical & Electronic

    Abstract

    In orthogonal frequency division multiplexing (OFDM) systems, carrier frequency offset (CFO) destroys the orthogonality between subcarriers and hence introduces intercarrier interference. In this paper, a maximum likelihood CFO correction (ML-CFOC) approach is proposed to compensate for the deleterious effects of CFO. The ML-CFOC method exploits the independence between the desired signals and is based on a novel simplified independent component analysis algorithm. The proposed ML-CFOC approach is successfully implemented for OFDM systems over multipath fading channels without requiring training sequences. Computer simulations are given to illustrate the optimal performance of the ML-CFOC.

    Journal Title

    Circuits Systems and Signal Processing

    Volume

    26

    Issue/Number

    1

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    43

    Last Page

    54

    WOS Identifier

    WOS:000245421300003

    ISSN

    0278-081X

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