OFDM systems design using harmonic wavelets

ANOH, Kelvin, IKPEHAI, Augustine, ADEBISI, Bamidele, RABIE, Khaled, POPOOLA, Wasiu and GACANIN, Haris (2019). OFDM systems design using harmonic wavelets. 2019 IEEE Wireless Communications and Networking Conference (WCNC).

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Official URL: https://ieeexplore.ieee.org/document/8885573
Link to published version:: https://doi.org/10.1109/WCNC.2019.8885573
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Abstract

Orthogonal frequency-division multiplexing (OFDM) is a popular multi-carrier technique used in many digital communication systems such as wireless fidelity (Wi-Fi), long term evolution (LTE) and power line communication systems. It can be designed using fast Fourier transform (FFT) or wavelet transform (WT). The major drawback in using WT is that it is computationally inefficient. In this study, we introduce a simple and computationally efficient WT, harmonic wavelet transform, for OFDM signal processing. The new WT uses the orthogonal basis functions of conventional FFT-OFDM except that it involves translation and dilation of the input signal; the new wavelets is referred to as harmonic wavelets (HW). When compared with pilot-assisted OFDM system in terms of reduction in the peak-to-average power ratio, the results show that HW-OFDM outperforms FFT-OFDM by 3 dB at 10−4 CCDF (complementary cumulative distribution function). Over Rayleigh fading channel with additive white Gaussian noise (AWGN), the bit error ratio of both FFT-OFDM and HW-OFDM perfectly matched, showing that the proposed HW-OFDM is better in terms of peak-to-average power ratio reduction.

Item Type: Article
Additional Information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. IEEE Wireless Communications and Networking Conference 15-19 April 2019, Marrakech, Morocco
Identification Number: https://doi.org/10.1109/WCNC.2019.8885573
SWORD Depositor: Symplectic Elements
Depositing User: Symplectic Elements
Date Deposited: 16 May 2019 08:27
Last Modified: 19 Nov 2019 15:15
URI: http://shura.shu.ac.uk/id/eprint/24595

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