PAPR reduction of wavelet-OFDM systems using pilot symbols

ANOH, Kelvin, IKPEHAI, Augustine, RABIE, Khaled, ADEBISI, Bamidele and POPOOLA, Wasiu (2018). PAPR reduction of wavelet-OFDM systems using pilot symbols. In: 2018 IEEE international symposium on power line communications and its applications (ISPLC 2018). IEEE, 129-134.

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    Wavelet transform is at the heart of IEEE 1901 power line communication standard which uses orthogonal frequency-division multiplexing (OFDM) scheme. Examples of wavelets used in designing wavelet-based OFDM (WOFDM) have been shown as possessing lower peak-to-average power ratio (PAPR) than the conventional fast Fourier transform (FFT)-based OFDM. In this study, we investigate 29 different orthogonal wavelets that can be used in designing WOFDM in terms of PAPR and sidelobes behaviour of the filters that enable these wavelets. Our WOFDM model shows that most orthogonal wavelets with increasing filter coefficient lengths achieve better PAPR. In addition, we also demonstrate a method of pilot-assisted OFDM (PA-OFDM) processing to further reduce the PAPR of the WOFDM systems. This technique achieves PAPR reduction with no added complexity and no extra bandwidth cost.

    Item Type: Book Section
    Additional Information: 2018 IEEE International Symposium on Power Line Communications and its Applications (ISPLC), 8-11 April 2018, Manchester UK
    Uncontrolled Keywords: Wavelets; OFDM; PAPR; pilot assisted OFDM; power line communication; sidelobes
    Identification Number:
    Page Range: 129-134
    SWORD Depositor: Symplectic Elements
    Depositing User: Symplectic Elements
    Date Deposited: 13 Feb 2019 16:39
    Last Modified: 13 Feb 2019 16:39

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