Selective mapping technique using sliding weighting factor in frequency domain

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

    Abstract

    The orthogonal frequency-division multiplexing (OFDM) became the most important technology of the wireless broadband communications system because it achieves high data transmission and is robust to the frequency selective fading channel. However, the major disadvantage of this technology is a high peak-to-average power ratio (PAPR) because it causes signal distortion and high energy consumption. Thus, a new PAPR reduction technique is proposed in this paper. The proposed selective mapping technique (SLM) uses a phase rotation as well as a sliding amplitude weighting factor in frequency domain to generate statistically independent OFDM symbols group. Some subcarrier with high frequency produces many peak points in time domain so that it causes high PAPR. Thus, the basic principle of the proposed scheme is that some subcarrier with low frequency is given to a high amplitude weighting factor and some subcarrier with high frequency is given to a low amplitude weighting factor. In addition, the performance of the proposed SLM is evaluated with computer simulations
    Original languageEnglish
    Title of host publicationProceedings
    Subtitle of host publicationIEEE Vehicular Technology Conference
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Print)978-146736337-2
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA4 Article in a conference publication
    EventIEEE 77th Vehicular Technology Conference, VTC Spring 2013 - Dresden, Germany
    Duration: 2 Jun 20135 Jun 2013
    Conference number: 77

    Conference

    ConferenceIEEE 77th Vehicular Technology Conference, VTC Spring 2013
    Abbreviated titleVTC Spring 2013
    CountryGermany
    CityDresden
    Period2/06/135/06/13

    Keywords

    • Etc
    • FFT
    • OFDM
    • PAPR
    • Selective Mapping Technique
    • wireless communication

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