News : DSYS
January 01 2023
Development of artificial intelligence algorithms for narrow-band localization
Narrowband (NB) radio signals are widely used in the context of low power, wide area (LPWA) networks, which are one of the key components of the Internet-of-Things (NB-IoT). However, because of their limited bandwidth, such signals are not well suited for accurate localization, especially when used in a complex environment like high buildings areas or […] >>
January 01 2023
Ultrasonic predictive maintenance
As part of the development of its research activities on sensor networks and predictive maintenance, the Autonomy and Sensor Integration Laboratory (DSYS/SSCE/LAIC) of CEA-LETI in Grenoble, France, is offering a thesis on “Ultrasound-based predictive maintenance”. Ultrasound emission is one of the first signs of ageing in an industrial system, before the appearance of vibrations, noise […] >>
January 01 2023
Modelling of device aging for energy conversion : toward predictive maintenance of power converters ?
The conversion of electrical energy is currently a major issue within our societies, whether to reduce losses, to allow the integration of a maximum of renewable energy from wind or solar power or to have cleaner mobility (electric vehicles, whatever their size, individual or collective), in industry as well as in the residential sector. The […] >>
January 01 2023
Inductor less DC/DC isolated converter
The aim of this thesis is to design high-efficiency power converters based on resonating piezoelectric transducers. A large part of the work is to develop the electrical cycle able to energetically maintain the piezoelectric resonator in resonance and ensure zero-voltage switching, for electrical energy transfer from the source to the piezoelectric resonator or from the […] >>
January 01 2023
Development of Smart Beamforming Architectures for 6G Telecommunication Systems
Over the past 20 years, wireless communication systems have continued to evolve and offer new services. Today, the success is such that the frequency bands below 10GHz are saturated and we are now turning to millimeter band frequencies. These frequencies offer the possibility to develop systems with higher data rates. However, they require beamforming to […] >>