HAPs are employed as a group of base stations in terrestrial communication systems.
InP technology allows direct digital synthesis of high-frequency signals, simplifying the system design and reducing the number of discrete components required in advanced satellite, aircraft and terrestrial communication systems.
The MgO/GaN structures are also found to be quite radiation-resistant, making them attractive for satellite and terrestrial communication systems requiring a high tolerance to high energy (40 MeV) protons.
In comparison to terrestrial communication, SATCOM systems have the advantages of larger bandwidth and wider coverage, for providing the huge amount of data services in the emerging fifth generation (5G) networks, such as hybrid satellite-terrestrial communication systems [5, 6].
Most of the previous literature on the channel measurement and characterization is focused on terrestrial cellular communication systems.
CCSR has a long standing track record of being a major academic research group in the field of wireless communications within Europe and historically it has a unique research approach on both satellite as well as terrestrial mobile communication systems.
Integrated terrestrial and satellite communication system is a paradigm that has been addressed for many years and that is at the fore front of the research and development activity within the satellite community.
Operational in 1998, Iridium linked existing terrestrial communications systems, including faxes, pagers, computers, and telephones.
Following the theoretical analysis presented early on, the effect of dispersion due to atmospheric pressure and temperature on a terrestrial free-space optical communication system is investigated.
