Maha Cherif Dakhli

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The combination of Multiple-Input Multiple-Output (MIMO) with Multi-Carrier Code Division Multiplexing Access (MC-CDMA) is a promising technique for achieving high performance with very high data rates in 4G broadband wireless communications. Nevertheless, Nonlinearity of High-Power Amplifier (HPA) plays a crucial role in the performance of MIMO MC-CDMA(More)
We propose a Non-Linear (NL) distortion compensator based on Neural Network (NN) accompanied with MMSE (Minimum Mean Square Error) which corrects the nonlinearity introduced by HPA (High Power Amplifier). The neural network consists on a feed-forward Multi-Layer Perceptron (MLP) associated with Levenberg-Marquardt learning algorithm. In this paper, the(More)
This paper proposes a Nonlinear Distortion Cancellation (NDC) scheme of the nonlinearity HPA (High Power Amplifier) in the V-BLAST MIMO MC-CDMA (Vertical Bell Laboratories Layered Space-Time Multiple-Input Multiple-Output Multi-Carrier Code Division Multiplexing Access) systems over Rayleigh fading channel. The compensation of the nonlinearities effects in(More)
The combination of Multiple Input Multiple Output (MIMO) with Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for high performance with very high data rates in 4G broadband wireless communications. However, the non-linearities caused by the High Power Amplifier (HPA) degrade the performance of MIMO-OFDM systems. In this paper, we(More)
Cognitive Radio (CR) Technology has emerged for the future of wireless communications, its key parameters of interest are frequency, power and modulation techniques. The Spectrum Sensing is an important task to determine the availability of the vacant channels. In Multicarrier Communication using Digital Signal Processing Techniques, Filter Bank Multi(More)