Y. Himeur
ABSTRACT
This paper addresses the use of fast Fourier transform (FFT), discret wavelet transform (DWT) and wavelet packet transform (WPT) in OFDM based powerline communication (PLC), in order to combat multipath and impulsive noise effect over a powerline channel. For this purpose, we consider a specific PLC channel model under an impulsive noise environment and develop a secure and practical OFDM modulation method using a channel equalizer approach and a new chaotic interleaving system to combat the burst errors due to impulsive noise. Two kinds of noises have been considered namely asynchronous and cyclo-stationary impulsive noises. They have significant spectral components in the band used by PLC systems. By means of a methodology that combines FFT/DWT/WPT, chaotic interleaving and frequency-domain equalizer (FEQ) over OFDM modulation, more noise and multipath protection capability is obtained even in harmful scenarios, in which the noise terms have significant level in terms of amplitude and impulsive bursts probabilities.
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- Powerline communication performance using FFT/DWT/WPT-based OFDM systems and chaotic interleaving
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