Communications systems

Mesures des puissances radio

The research of the Communication Systems Department's research lecturers is structured around three major subjects:

  • Signal processing
  • Internet of things
  • Microelectronic components and nanotechnologies

They work in internationally renowned research institutes: IEMN and CRIStAL.

Their active participation in research projects, carried out jointly with national and international professional and academic partners, enables the school to provide continuously updated specialized training in telecommunications.

Research subjects

Signal processing

  • Statistical estimation methods: Estimate the dynamic characteristics of a large number of unknown objects based on detected noise from various sensors. Applications: Targeting tracking, detection and tracking of multiple persons in complex video scenes, group target tracking models (plane formations, convoys…).

  • Robust and secure transmission of information using graphic code: Blind restoration (statistical methods) and optimized detection (probabilistic decoding); study of a reliable model for authentication via the printing of graphic codes (statistical modeling of the printing/acquisition-coding of a channel being eavesdropped illegally). Applications: Protecting documents using 2D graphic codes (combat product counterfeiting or the fraudulent use of documents…).

Internet of things

Compared to classic communication systems, the complexity of dense networks of communicating things is due to the density of sensors, their need for low power consumption and their capacity for self-organization.

An ultra-wideband impulse radio network transposed to ultra high frequency (60 GHz) is being studied as part of a cross-functional study of sensor networks: modeling of the channel and multiple cases of access interference; impact of hardware characteristics on multi-hop transmissions.

Possible applications: Telecommunications for transportation, digital communications and RF software-defined radio.

Microelectronic components and nanotechnologies

  • Meta-materials, "left-handed" materials for microwave-to-millimeter wave applications (highly selective compact filters, antennas and ultra-compact RFID Tags) and applications for THz frequencies (negative and zero refraction, focusing of a quasi-optical beam, rotation of the plane of polarization).

  • Microelectronic and microwave-frequency devices: study of components based on the periodic structuring of dielectric strips by metallic patterns with dimensions smaller than the operating bandwidth. This study aims to define an artificial material with unique properties (obtaining negative effective permeability and permittivity values, for example).

  • Nanometric components (diodes and transistors) and systems (molecular memory, switches, etc.) based on organic and molecular architectures.

  • The potential of nanophotonics to perform the switching function at a 1550 nm optical telecommunications bandwidth. The basic component for performing this function is an optical microguide (InP network) that presents considerable lateral confinement obtained by deep etching in the material.

  • Design, manufacture and characterization of micro-fluidic microsystems intended for environment control and biological analysis. Specifically, to study the liquid/surface interactions and create superhydrophobic surfaces using biomimetics. Applications: Self-cleaning surfaces, molecular analysis by mass spectrometry for silica nano-wire or by the plasmon resonance technique.



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