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- Centre National de la Recherche ScientifiqueFR6 papers
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5 papers · 1 filter
About Multichannel Speech Signal Extraction and Separation Techniques
Adel Hidri, Souad Meddeb, Hamid Amiri
The extraction of a desired speech signal from a noisy environment has become a challenging issue. In the recent years, the scientific community has particularly focused on multich…
A Full Performance Analysis of Channel Estimation Methods for Time Varying OFDM Systems
Zaier Aida, Ridha Bouallegue
In this paper, we have evaluated various methods of time-frequency-selective fading channels estimation in OFDM system and some of them improved under time varying conditions. So,…
Multiuser Detection in Asynchronous Multibeam Communications
Helmi Chaouech, Ridha Bouallegue
This paper deals with multi-user detection techniques in asynchronous multibeam satellite communications. The proposed solutions are based on successive interference cancellation a…
Multiuser Detection and Channel Estimation for Multibeam Satellite Communications
Helmi Chaouech, Ridha Bouallegue
In this paper, iterative multi-user detection techniques for multi-beam communications are presented. The solutions are based on a successive interference cancellation architecture…
Channel Estimation Study for Block - Pilot Insertion in OFDM Systems under Slowly Time Varying Conditions
Aida Zaier, Ridha Bouallegue
In this paper, we propose a study of performance of the channel estimation using LS, MMSE, LMMSE and Lr-LMMSE algorithms in OFDM (Orthogonal Frequency Division Multiplexing) system…