Joint Power Allocation and User-Pairing in Multi-Beam Hybrid Satellite Terrestrial Networks

In this paper Non-Orthogonal Multiple Access(NOMA) is used at beam level as well as at ground users. The goal is to provide high throughput to the beam-edge users when full frequency reuse is considered. To increase connectivity satellite is used. In this view the system model is designed in such a way that users which are not connected to the base stations are the primary users for the satellite. Terrestrial networks are also present in the system model which cause interference. Considering all these facts, a new scheme is proposed to cater the beam-edge users which are facing the issue of interference from neighbouring beam as well as from terrestrial. In this paper, it is also shown that the data rate can also be increased by optimal power allocation and user-pairing for the beam-edge users. A comparison based study with [1] is also implemented in this paper.