THESE Spectrum Sharing between MS & MSS FH

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The growing demand for wireless connectivity is driving increasing pressure on the radio frequency spectrum leading to the need for more efficient spectrum use and coexistence strategies between different services. An immediate concern arises in the coordination between heritage Geostationary Satellite Orbit and the rapidly growing Low Earth Orbit constellations operating at the same frequency band. Looking ahead an emerging research area focuses on frequency sharing between terrestrial mobile services (such as 5G and future 6G networks) and mobile satellite services (MSS) which operate in overlapping or adjacent frequency bands.

This topic explores how these systems can coexist without harmful interference enabling both to deliver high-performance communication capabilities. It involves studying propagation characteristics interference management dynamic spectrum access and coordination mechanisms between ground and space segments to ensure reliable efficient and equitable spectrum utilization in an increasingly congested radio environment. These aspects have been the focus of both emerging regulation as week as research. Regulators such as the ITU and national spectrum authorities are developing frameworks that support dynamic and coordinated spectrum use across satellite and terrestrial networks. On the research side stateof-the-art efforts are focusing on interference modelling cognitive radio techniques and advanced beamforming and power control algorithms to enable real-time coexistence between terrestrial and satellite systems. Emerging studies also explore the use of artificial intelligence and machine learning for adaptive spectrum management as well as network access and optimization across space and ground segments.

The project will include the following core activities:

1. Identify an emerging use case where frequency coordination across satellite and terrestrial networks is emerging as a priority

2. Develop a modelling framework for the associated use case that enables to predict interference

3. Investigate interference management techniques across radio digital and network technologies

Research field:

Telecommunication engineering

Electrical engineering

Aerospace engineering

Required skills:

Orbital analysis

Wireless communication systems

Numerical simulation programming (Matlab)

The Thesis will include 18 months at Thales Alenia Space in Toulouse followed by 18 months at the Heriot-Watt University United Kingdom Edinburgh and than a 6 months secondement University of the Bundeswehr Munich Germany.