Over the last decades, wireless communications have evolved in order to support an ever-increasing throughput thanks to higher bandwidth, spatial multiplexing, and improved implementation of advanced communication schemes. Currently this is peaking on the cellular side with upcoming 5G networks and on the local access side with WiFi solutions based on IEEE 802.11 standards, operating in traditional (below 6 GHz) as well as mm-wave bands (28, 60 GHz).
While those standards can deliver a high throughput of multiple Gbit/s, several applications require further improvements in throughput, reliability of the link and power-efficiency of the related architectures. Target applications include high-speed short-distance data download, AR/VR equipment for real-time high-resolution set-ups, wireless access to the home, and network fronthaul/backhaul links. Imec is investigating solutions relying on the wide bandwidth available at RF frequencies above 100 GHz, in combination with large antenna arrays.
In order to reach these goals, different ideas should be investigated from the theoretical side and validated through simulations. They include the following (a sub-selection will be made during the thesis):
- Alternative waveforms and modulations, allowing simplified communication algorithms
- Combination between digital pre-equalization (transmitter side) and post-equalization (receiver side)
- Robust communication in NLOS, multi-user and mobile environments
- Joint optimization between analog and digital precoding for hybrid architectures
- Sensitivity to analog non-idealities occurring at high frequencies
The student is expected to have a strong knowledge of wireless communication theory, especially concerning multiple-antenna systems, and related algorithms. He/she will investigate those options based on performance simulations in Matlab while simultaneously considering the system power consumption.
Type of project: Combination of internship and thesis
Duration: 6 months
Required degree: Master of Engineering Science
Required background: Electrotechnics/Electrical Engineering, Electromechanical engineering
Supervising scientist(s): For further information or for application, please contact: Claude Desset (Claude.Desset@imec.be)
Imec allowance will be provided for students studying at a non-Belgian university.