An all-digital frequency synchronization scheme for OFDM systems

Zhenhong Li, Aarne Mämmelä

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    10 Citations (Scopus)

    Abstract

    The main purpose of this paper is to study the frequency synchronization problem in OFDM systems. A new frequency synchronization method is achieved by means of an all-digital synchronization loop including acquisition and tracking modes. The frequency offset is estimated only once per frame. The acquisition algorithm is based on periodically inserted reference symbols, and the tracking algorithm on the cyclic prefix of the OFDM symbols. The algorithm performance is assessed in an AWGN channel with a low SNR value and in the presence of a timing inaccuracy. The simulations show that the algorithm is accurate and the suggested frequency synchronization scheme works well.
    Original languageEnglish
    Title of host publicationProceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications
    Subtitle of host publicationPIMRC '97
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages327-331
    Volume2
    ISBN (Print)0-7803-3871-5
    DOIs
    Publication statusPublished - 1997
    MoE publication typeNot Eligible
    Event8th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC '97 - Helsinki, Finland
    Duration: 1 Jul 19974 Jul 1997
    Conference number: 8

    Conference

    Conference8th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC '97
    Abbreviated titlePIMRC '97
    CountryFinland
    CityHelsinki
    Period1/07/974/07/97

    Fingerprint

    Orthogonal frequency division multiplexing
    Synchronization

    Keywords

    • Frequency synchronization
    • Frequency estimation
    • Tracking loops
    • OFDM
    • Phase estimation
    • AWGN channels
    • Timing
    • Research and development
    • Data communication
    • Degradation

    Cite this

    Li, Z., & Mämmelä, A. (1997). An all-digital frequency synchronization scheme for OFDM systems. In Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97 (Vol. 2, pp. 327-331). IEEE Institute of Electrical and Electronic Engineers . https://doi.org/10.1109/PIMRC.1997.630922
    Li, Zhenhong ; Mämmelä, Aarne. / An all-digital frequency synchronization scheme for OFDM systems. Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. Vol. 2 IEEE Institute of Electrical and Electronic Engineers , 1997. pp. 327-331
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    title = "An all-digital frequency synchronization scheme for OFDM systems",
    abstract = "The main purpose of this paper is to study the frequency synchronization problem in OFDM systems. A new frequency synchronization method is achieved by means of an all-digital synchronization loop including acquisition and tracking modes. The frequency offset is estimated only once per frame. The acquisition algorithm is based on periodically inserted reference symbols, and the tracking algorithm on the cyclic prefix of the OFDM symbols. The algorithm performance is assessed in an AWGN channel with a low SNR value and in the presence of a timing inaccuracy. The simulations show that the algorithm is accurate and the suggested frequency synchronization scheme works well.",
    keywords = "Frequency synchronization, Frequency estimation, Tracking loops, OFDM, Phase estimation, AWGN channels, Timing, Research and development, Data communication, Degradation",
    author = "Zhenhong Li and Aarne M{\"a}mmel{\"a}",
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    Li, Z & Mämmelä, A 1997, An all-digital frequency synchronization scheme for OFDM systems. in Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. vol. 2, IEEE Institute of Electrical and Electronic Engineers , pp. 327-331, 8th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC '97, Helsinki, Finland, 1/07/97. https://doi.org/10.1109/PIMRC.1997.630922

    An all-digital frequency synchronization scheme for OFDM systems. / Li, Zhenhong; Mämmelä, Aarne.

    Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. Vol. 2 IEEE Institute of Electrical and Electronic Engineers , 1997. p. 327-331.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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    AB - The main purpose of this paper is to study the frequency synchronization problem in OFDM systems. A new frequency synchronization method is achieved by means of an all-digital synchronization loop including acquisition and tracking modes. The frequency offset is estimated only once per frame. The acquisition algorithm is based on periodically inserted reference symbols, and the tracking algorithm on the cyclic prefix of the OFDM symbols. The algorithm performance is assessed in an AWGN channel with a low SNR value and in the presence of a timing inaccuracy. The simulations show that the algorithm is accurate and the suggested frequency synchronization scheme works well.

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    KW - Phase estimation

    KW - AWGN channels

    KW - Timing

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    KW - Data communication

    KW - Degradation

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    Li Z, Mämmelä A. An all-digital frequency synchronization scheme for OFDM systems. In Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications : PIMRC '97. Vol. 2. IEEE Institute of Electrical and Electronic Engineers . 1997. p. 327-331 https://doi.org/10.1109/PIMRC.1997.630922