Abstract: Over the next decade,Very High-Throughput Satellite (VHTS) will bring enough capacity to serve high speed internet and in-flight connectivity markets at scale, offering fiber-like services both in terms of price and speed. In this context, a generic VHTS mission utilizing Q/V-band feeder links and Ka-band user links is described. However, the rain attenuation on the feeder links becomes a limiting issue because of the higher frequencies. Toward this, an exploitation of multiple gateways (GWs) as a transmit diversity measure for overcoming severe propagation effects are being considered. Ground Application System (GAS) design of VHTS is illustrated including N+P GWs (N active and P redundant GWs) diversity, frequency plan, link budget and system capacity.

Key words: ground application system, Q/V-band, VHTS, gateway diversity, N+P scheme