An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture

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

    28 Citations (Scopus)
    130 Downloads (Pure)

    Abstract

    Cognitive Radio is a promising technology to utilize non-used parts of the spectrum that actually are assigned to licensed services. An adaptive OFDM based Cognitive Radio system has the capacity to nullify individual carriers to avoid interference to the licensed user. Therefore, there could be a considerably large number of zero-valued inputs/outputs for the IFFT/FFT in the OFDM transceiver. Due to the wasted operations on zero values, the standard FFT is no longer efficient. Based on this observation, we propose to use a computationally efficient IFFT/FFT as an option for OFDM based Cognitive Radio. Mapping this algorithm onto a reconfigurable architecture is discussed.
    Original languageUndefined
    Title of host publicationIEEE International Conference on Communications 2007 Cognet Workshop
    Place of PublicationGlasgow
    PublisherIEEE Communications Society
    Pages6522-6526
    Number of pages5
    ISBN (Print)1-4244-0353-7
    DOIs
    Publication statusPublished - 24 Jun 2007
    EventFirst IEEE CogNet Workshop, CogNet@ICC 2007: Towards Cognition in Wireless Networks - Glasgow, United Kingdom
    Duration: 24 Jun 200724 Jun 2007
    Conference number: 1

    Publication series

    Name
    PublisherIEEE Communication Society

    Conference

    ConferenceFirst IEEE CogNet Workshop, CogNet@ICC 2007
    Abbreviated titleCogNet@ICC
    CountryUnited Kingdom
    CityGlasgow
    Period24/06/0724/06/07

    Keywords

    • EWI-9550
    • METIS-242161
    • IR-67024

    Cite this

    Zhang, Q., Kokkeler, A. B. J., & Smit, G. J. M. (2007). An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture. In IEEE International Conference on Communications 2007 Cognet Workshop (pp. 6522-6526). [10.1109/ICC.2007.1079] Glasgow: IEEE Communications Society. https://doi.org/10.1109/ICC.2007.1079
    Zhang, Q. ; Kokkeler, Andre B.J. ; Smit, Gerardus Johannes Maria. / An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture. IEEE International Conference on Communications 2007 Cognet Workshop. Glasgow : IEEE Communications Society, 2007. pp. 6522-6526
    @inproceedings{f5ff13e55d544c3c80ace52eee788745,
    title = "An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture",
    abstract = "Cognitive Radio is a promising technology to utilize non-used parts of the spectrum that actually are assigned to licensed services. An adaptive OFDM based Cognitive Radio system has the capacity to nullify individual carriers to avoid interference to the licensed user. Therefore, there could be a considerably large number of zero-valued inputs/outputs for the IFFT/FFT in the OFDM transceiver. Due to the wasted operations on zero values, the standard FFT is no longer efficient. Based on this observation, we propose to use a computationally efficient IFFT/FFT as an option for OFDM based Cognitive Radio. Mapping this algorithm onto a reconfigurable architecture is discussed.",
    keywords = "EWI-9550, METIS-242161, IR-67024",
    author = "Q. Zhang and Kokkeler, {Andre B.J.} and Smit, {Gerardus Johannes Maria}",
    year = "2007",
    month = "6",
    day = "24",
    doi = "10.1109/ICC.2007.1079",
    language = "Undefined",
    isbn = "1-4244-0353-7",
    publisher = "IEEE Communications Society",
    pages = "6522--6526",
    booktitle = "IEEE International Conference on Communications 2007 Cognet Workshop",
    address = "United States",

    }

    Zhang, Q, Kokkeler, ABJ & Smit, GJM 2007, An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture. in IEEE International Conference on Communications 2007 Cognet Workshop., 10.1109/ICC.2007.1079, IEEE Communications Society, Glasgow, pp. 6522-6526, First IEEE CogNet Workshop, CogNet@ICC 2007, Glasgow, United Kingdom, 24/06/07. https://doi.org/10.1109/ICC.2007.1079

    An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture. / Zhang, Q.; Kokkeler, Andre B.J.; Smit, Gerardus Johannes Maria.

    IEEE International Conference on Communications 2007 Cognet Workshop. Glasgow : IEEE Communications Society, 2007. p. 6522-6526 10.1109/ICC.2007.1079.

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

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    Y1 - 2007/6/24

    N2 - Cognitive Radio is a promising technology to utilize non-used parts of the spectrum that actually are assigned to licensed services. An adaptive OFDM based Cognitive Radio system has the capacity to nullify individual carriers to avoid interference to the licensed user. Therefore, there could be a considerably large number of zero-valued inputs/outputs for the IFFT/FFT in the OFDM transceiver. Due to the wasted operations on zero values, the standard FFT is no longer efficient. Based on this observation, we propose to use a computationally efficient IFFT/FFT as an option for OFDM based Cognitive Radio. Mapping this algorithm onto a reconfigurable architecture is discussed.

    AB - Cognitive Radio is a promising technology to utilize non-used parts of the spectrum that actually are assigned to licensed services. An adaptive OFDM based Cognitive Radio system has the capacity to nullify individual carriers to avoid interference to the licensed user. Therefore, there could be a considerably large number of zero-valued inputs/outputs for the IFFT/FFT in the OFDM transceiver. Due to the wasted operations on zero values, the standard FFT is no longer efficient. Based on this observation, we propose to use a computationally efficient IFFT/FFT as an option for OFDM based Cognitive Radio. Mapping this algorithm onto a reconfigurable architecture is discussed.

    KW - EWI-9550

    KW - METIS-242161

    KW - IR-67024

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    BT - IEEE International Conference on Communications 2007 Cognet Workshop

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    Zhang Q, Kokkeler ABJ, Smit GJM. An Efficient FFT For OFDM Based Cognitive Radio On A Reconfigurable Architecture. In IEEE International Conference on Communications 2007 Cognet Workshop. Glasgow: IEEE Communications Society. 2007. p. 6522-6526. 10.1109/ICC.2007.1079 https://doi.org/10.1109/ICC.2007.1079