2D-DWT vs. FFT OFDM Systems in fading AWGN channels
Mushtaq Talib Al-Sharify, Al-Anssari Ali Ihsan, Nameer Hashim Qasim · Radioelectronics and Communications Systems · 2015
Wireless communication technology, which provides voice communication and high pick data rates for Orthogonal Frequency Division Multiplexing (OFDM) systems, have been investigated in the article. The Fast Fourier transform (FFT) and the 2D discrete wavelet transform (2D-DWT) were applied for this investigation. The design of scrambling system consists from three parts, namely from the transmitter, the receiver and the noisy channel. The efficiency results for two cases (normalized and non-normalized) of both transforms (FFT and 2D-DWT) in OFDM system were calculated using the program inMATLABsoftware. The comparison of systems in a fadingAWGNchannel was carried out.