Hussein Hijazi

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In this paper, we propose a new algorithm for orthogonal frequency-division-multiplexing (OFDM) systems. The algorithm is based on particle fitering (PF) for joint carrier recovery and channel estimation in slow Rayleigh fading channel. The algorithm has been designed to work with both the parametric L-path channel model (with known path delays) and the(More)
Non-Binary LDPC codes are nowadays considered as a potential competitor of both binary LDPC and convolutional Turbo Codes, mainly when codes with short and moderate codeword lengths are used. However, the Non-Binary nature of these codes makes their decoding process suffers from high computational complexity. This paper deals with the reduction of this(More)
This paper introduces a Schematic Model of the Magnetic Coupling revolving in the NFC/RFID Systemusing a Computer Aided Design tool. Industry bodies are developing programs to improve NFC/RFID devices based on several specifications. Magnetic coupling is one of the most important factorsin near-field communication. Thus a Schematic Model is proposed, based(More)
This work deals with joint carrier recovery and channel estimation for orthogonal frequency-division-multiplexing (OFDM) systems over slow time-varying Rayleigh channel. In this paper, we propose a less complex algorithm based on a mixture PLL-based loop for estimating and tracking parameters in non-linear model. The algorithm can work with both the(More)
Universal-filtered multi-carrier (UFMC) aims at replacing orthogonal frequency-division multiplexing (OFDM) and enhances system robustness and performance in relaxed synchronization condition e.g. time-frequency misalignment. We proposed an algorithm based on expectation-maximization to jointly estimate the channel impulse response and the CFO that occurs(More)
This paper investigates a 2-bit binary representation of the reliability messages generated by the Variable Node (VN) processor of Non-Binary Low Density Parity Check (NB-LDPC) Decoder. The NB-LDPC family of error correcting codes, considered as a potential alternative to both binary LDPC and convolutional Turbo Codes, suffers from high computational(More)
In this paper, we investigate the decoding of short Non-Binary (NB)-LDPC codes of rate 1/2 using a non-iterative approach based on the Maximum-Likelihood (ML) principle. The traditional decoding algorithms used to decode the NB-LDPC codes are by nature iterative where the Variables Nodes (VN) and Check Nodes (CN) exchange data iteratively during, at least,(More)
Wireless communication is a emerging field of evolution in modern era of technology, and every day it is giving new technology to facilitate human being. The new facilities always need a QoS i. e. directly user satisfaction. For satisfaction of wireless users is to give efficient and reliable technology, so that sharing of information is made easier. In the(More)
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