The Information Processing Group is concerned with fundamental issues in the area of communications, in particular coding and information theory. Information theory establishes the limits of communications – what is achievable and what is not. Coding theory tries to devise low complexity schemes that approach these limits. The group is composed of four laboratories : Communication Theory Laboratory (LTHC) Information Theory Laboratory (LTHI) Laboratory for Information in Networked Systems (LINX) Laboratory for Statistical Mechanics of Inference in Large Systems (SMILS)