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2D-DWT vs. FFT OFDM systems in fading AWGN channels

Al-Shuraifi Mushtaq, Al-Anssari Ali Ihsan, Nameer Qasim

Abstract


Wireless communication technology provides voice communication and high pick data rates for orthogonal frequency division multiplexing (OFDM) system have been investigated. Fast Fourier transform (FFT) and 2D discrete wavelet transform (2D DWT) were applied for this investigation. The design of scrambling system consists parts “transmitter, receiver and noisy channel”. The results in two cases (normalized and non-normalized) of both system (FFT and 2D DWT) efficiency in OFDM system was calculated through Matlab program.


Keywords


OFDM; FFT; 2D DWT; AWGN; flat fading channel; frequency-selective fading channel

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References


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DOI: http://dx.doi.org/10.3103/S0735272715050052

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