CTTC is organized in four divisions:

Communication Networks Division (CND)

CND aims at optimizing the network infrastructure end-to-end. This includes core, metro, and access, optical and wireless, transport and aggregation, fixed and mobile networks. Its research not only includes theoretical research, but also moves to a more practical stage by developing complete simulation frameworks and testbeds with the goal of transferring the technology to industry.

Communication Systems Division (CSD)

CSD activities are aligned with the following fields: communication theory, advanced signal and information processing, and radio resource management and intelligence in wireless networks. Its activities concern the next areas of technology: future cellular communications (LTE and beyond), large-scale communication, power line communications, positioning technologies, navigation systems and satellite communications.

Communication Technologies Division (CTD)

CTD aims to address the research to the most endeavoring challenges that future communications technologies will face: those of energy and bandwidth efficiency. CTD research has a strong experimental emphasis, achieved through the use of demonstrators and testbeds, and the focus is on component (subsystem) level and also on PHY and MAC layers.

Geomatics

This division deals with the study, acquisition, storage, organization, analysis, dissemination, management and use of geographically-referenced spatial information. Geomatic disciplines include, among others, cartography, photogrammetry, remote sensing, sensor calibration and orientation, geodesy, topography, geographic information systems, civil engineering and geomatic engineering.