Signal and communications
Research topics
The Signal and Communication group works in the following research domains:
> Statistical signal processing for communications. The first area of our research activities concerned blind estimation techniques for radio spectrum monitoring. We pursued our works in blind source separation, concentrating more than, in the past, on digital communication applications. Finally, we significantly developed our activity on random matrices and their use in digital communications and signal processing. In particular, we generalized some existing mathematical results to more complex models in order to provide more realistic models in our applicative contexts.
> Wavelets and image processing. Different contexts of the use of wavelet representations have been considered: compression, vision (disparity estimation) and restoration. However, our efforts mainly focused on image restoration, for which variational approaches have been proposed, using recently developed convex analysis tools. In the particular case of image denoising, it appeared preferable to adopt alternative nonlinear estimation approaches based on Stein’s principle. The interest of frame analyses was also emphasized by concentrating on dual-trees and oversampled filter banks introducing a reduced redundancy.
> Information theory.
Different aspects of information theory have been tackled: contributions have been brought to non-extensive statistics, introduced in statistical physics by C. Tsallis in 1988. We also studied conditions for the extension of some uncertainty inequalities such as Bialynicki-Birula's and Mycielski's ones. Finally, studies of maximal Rényi entropy laws under constraints and their interpretations constitute one of our main activities.
Research topics :: Team members :: Projects & Contracts
Team members
Head of the research group
NAJIM Jamal - Bât Copernic - 4B044 - - mail
CNRS Researchers
NAJIM Jamal - Bât Copernic - 4B044 - - mail
Researchers
BERCHER Jean-François - 4B039 Copernic - 01 60 95 72 88 - mail
CHEVREUIL Antoine - 4B044 Copernic - 01 60 95 72 78 - mail
CHOUZENOUX Emilie - - - mail
LOUBATON Philippe - 4B041 Copernic - 01 60 95 72 93 - mail
PESQUET Jean-Christophe - 4B037 Copernic - 01 60 95 77 39 - mail
ZAIDI Abdellatif - Copernic 4B044 - 0160957278 - mail
PhDs
ABBOUD Feriel - Bâtiment copernic - 4B046 - 01 60 95 72 88 - mail
HILTUNEN Sonja - Bâtiment Copernic - 4B048 - - mail
MARNISSI Yosra - Bâtiment Copernic - 4B046 - 01 60 95 72 88 - mail
MOUSSA Mohamed Ali - Bâtiment Copernic - 4B048 - 01 60 95 77 42 - mail
PHAM Gia-Thuy - Bât. Copernic - 4B048 - 01 60 95 77 42 - mail
PHAM Mai Quyen - 4B046 Copernic - - mail
PIRAYRE Aurélie - Bâtiment COPERNIC - 4B046 - 01 60 95 72 88 - mail
REPETTI Audrey - 4B046 Copernic - - mail
CDD
EL GHECHE Mireille - 4B050 Copernic - - mail
Projects & Contracts
| Period | Type | Name | Link |
| 200?-200? | ANR | ACI NIM MULTIM | |
| 200?-200? | ANR | Optimed. Algorithmes d'optimisation décomposés pour les problèmes d'imagerie médicale de grande taille. Programme ARA Masse de Données |
Research topics :: Team members :: Projects & Contracts