Towards airborne Connectivity: Multi-Layered Networks for Optical Backhaul

#STEM #smart #system #csulb

Global coverage to address the significant portion of the global population that remains unconnected or
under-connected is expected to be achieved through the deployment of non-terrestrial networks (NTNs), which
encompass a range of technologies such as High-Altitude Platform Stations (HAPSs), Satellites (GEO, MEO, LEO), and
Unmanned Aerial Vehicles (UAVs). In the realm of cutting-edge wireless technologies such as 6G and beyond, the goal is
to seamlessly integrate NTN nodes into terrestrial networks. Currently, there are isolated deployment examples, such as
LEO mega-constellations. This presentation focuses on the design of a multi-layer airborne backhaul network, utilizing
HAPSs and rotary-wing UAVs to establish free space optical (FSO) backhaul connections with ground-based stations.
HAPS fleets operate in circular tracks at stratospheric altitudes. Conversely, rotary-wing UAVs operate at medium and
lower altitudes, complementing HAPSs. The airborne backhaul architecture requires careful design to ensure
uninterrupted connectivity with ground-based stations, eliminating coverage gaps. The presentation outlines a
systematic approach for designing FSO-based airborne backhaul systems, detailing the process of determining the
appropriate number of airborne layers, HAPS tracks, HAPS units per track, the number of UAVs at lower altitudes, the
operating altitude for middle-layer UAVs, and the number of laser sources per airborne node based on a given coverage
area.This presentation will cover the importance of signal processing in the IT section, applications, future prospects as
well as what you need to succeed in the subfield of electrical engineering. It will also cover how classical implementation
of SP or DSP can be vastly improved by complementing it with ML modules.