Call-Off Order 2

The objective of this work item is to develop tools and techniques relevant to measuring the properties of hybrid paths that include a satellite segment (LEO or GEO). These techniques enable satellite segments to benefit from transport-layer enhancements, such as path selection, currently under study in the context of Path Aware Networking.

This work item is performed by the University of Aberdeen and CNR-ISTI.

In contrast to the current design where satellite communications and satellite remote sensing are designed separately and operated on orthogonal resources, the objective of this project is to design satellite networks for the joint purpose of communication and remote sensing.

This work item is performed by Imperial College London and the University of Luxembourg.

This working item aims at reviewing the main trends and evolutions in communication and signal processing techniques applied over fibre optics, identifying the most promising ones that could bring a benefit to space-based optical communications. The identified techniques shall be assessed over a realistic optical satellite channel by means of numerical simulations.

This work item is performed by the University of Luxembourg, University of Parma and DLR.

With the advent of LEO/MEO/GEO mega-constellations, multiple satellite visibility will provide a new dimension to enhance the connectivity and performance indicators of the communication network. To materialise this vision and leverage multi-connectivity, this work item aims to investigate novel radio resource management techniques suitable for the emerging system scenarios addressing multiple satellites with multiple routing options in space.  This activity will also aim to investigate the benefit of graph signal processing to optimize jointly diverse resources and different constraints applicable to radio resource management for the selected system scenarios.

This work item aims at performing a short term propagation experiment in EHF bands, namely in Q/V (40/50 GHz) and/or W down- and up-link (75/85 GHz) bands.  Given the short term nature of the experiment, most probably it needs to be focused on clear sky effects (e.g. scintillations), as measuring precipitation in a statistical significant manner requires long term collection of data. New inventive and pragmatic ideas that employ even terrestrial-based measurements in order to extrapolate with confidence the conclusions to Earth-space slant paths are sought for. For example, employing a transmitter on a hill or mountain to mimic a low elevation satellite link. 

This work item is performed by RAL-Space and the National Technical University of Athens.

This work item aims at studying and characterizing the effect of beam squinting on the end to end physical layer performance of the forward link of HTS systems. Performance optimization techniques shall also be developed and simulated.

This work item is performed by the University of Bradford.

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