1. Introduction aux techniques de transmission

Des origines des télécommunications aux communications numériques actuelles, un parcours rapide autour de la notion de transmission, la notion de liaison sans fil, des notions de théorie de l'information et la notion de modulation et de codage.

2. Réseaux de points: une introduction

Un réseau de points (lattice) est constitué de centres de sphères empilées possédant une structure de groupe. Utilisés en mathématiques pour les travaux sur les corps finis, les groupes et les formes quadratiques, mais aussi en chimie, où les cristallographes les emploient afin de modéliser le comportement de certains composés chimiques, ils servent également en communications numériques à construire des modulations tant sur le canal à bruit additif blanc gaussien (ou canal AWGN) que sur les canaux à évanouissements (Rice, Rayleigh).

3. Bit interleaved coded modulations for multiple-input multiple-output channels: an introduction

Presentation of the notion of BICM and MIMO channels, and their possible combination.

1. JPEG 2000: an introduction

Presentation of the JPEG 2000 standard.

2. Motion JPEG 2000: an introduction

A few facts on Motion JPEG 2000.

3. H.264/AVC: an introduction

Presentation of the H.264/AVC standard.

4. Unequal Error Protection for JPEG 2000

Unequal error protection relies on the assumption that there are more important and less important bit-stream elements, either in terms of visibility or in terms error resilience features in the decoder. We propose here a strategy to apply UEP to JPEG 2000 streams.

5. Flux vidéo et diffusion sur IP, application à un lien mobile : réflexions et approches Slides in French

Slides of a course given during several years at ESIEE engineering school, on the principles of multimedia signals and the issue of its transmission over a wireless (error-prone) channel.

1. HF communications: an introduction

HF frequencies have been used for more than a century due to their extremely interesting property of being able to propagate beyond line-of-sight. Nowadays, in the era of satellite and optical fiber networks, they still are used, in particular for military/security applications and by radio amateurs.

2. Wideband HF communications: towards a new era

Since 2010's, lots of research has been carried out on the possibility to improve existing HF standards and systems. This led to the invention of new solutions, all based on a wider band use, whether contiguous or not, but also on new strategies in terms of link establishment and management.