Open AccessPerformance of FFT-OFDM versus DWT-OFDM under Compressive Sensing
Author(s) -
Zainab Hdeib Al-Shably,
Zahir M. Hussain
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1804/1/012087
Subject(s) - quadrature amplitude modulation , orthogonal frequency division multiplexing , phase shift keying , electronic engineering , baseband , amplitude and phase shift keying , fast fourier transform , wavelet , computer science , qam , modulation (music) , mathematics , algorithm , telecommunications , bandwidth (computing) , engineering , physics , bit error rate , acoustics , artificial intelligence , channel (broadcasting)
In this work, we present a comparative study on the performance of Fourier-based OFDM (FFT-OFDM) and wavelet-based OFDM (DWT-OFDM) under compressive sensing (CS). Transmission over FFT-OFDM and DWT-OFDM, which has been made under different baseband modulation schemes such as Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Key (QPSK), Quadrature amplitude modulation (16QAM) and (64QAM) has been considered. From numerical simulation results, it is observed that the Wavelet-based OFDM system outperforms Fourier based OFDM when the Quadrature Amplitude Modulation is 16QAM and 64QAM within the signal to noise ratios range 30 to 40 dB. Although CS is more efficient in compression than classical compression techniques, it introduces more errors over OFDM transmission. Future directions of this work are also suggested.