Ergodic Capacity of Cognitive Satellite-Terrestrial Relay Networks with Practical Limitations

Capacity Analysis of Hybrid Satellite–Terrestrial Systems with Selection Relaying

“…The performance analysis of the multiuser case of the HSTRN with fixed AF relaying was given in [24]. The ergodic capacity of the cognitive HSTRN was determined in [25] for the case where there is no direct link between the geostationary satellite and the destination. The outage analysis of the system with multiple terrestrial relays that apply threshold-based DF transmission protocols was given in [26] for the case without the direct link between the satellite and terrestrial user.…”

“…The closed-form outage probability expressions were presented in the paper [28] for the case when two remote terrestrial users mutually communicate via a LEO mega-constellation satellite system, where terrestrial, aerial, or satellite relays forward the information broadcasted by the satellite to the other satellite. In the papers [24][25][26][27][28], the analytical results were obtained via the use of the assumption that the link between the satellite and the terrestrial user is modeled with shadowed Rice fading, that the terrestrial link is modeled by Nakagami-m fading, and that the fading parameters in both the satellite and terrestrial link are integer valued. In the more recent papers [29][30][31][32], the performance analysis of the non-orthogonal multiple access (NOMA)-based satellite-terrestrial-integrated network was given, based on a channel model that incorporates the antenna array pattern and attenuation caused by rain, resulting in higher accuracy.…”

“…It is well known that relay employment can significantly increase the capacity and improve the link reliability of wireless communications systems [13][14][15][16]. Similar approaches were proposed for the satellite-terrestrial systems, and corresponding performances were provided in [17][18][19][20][21][22][23][24][25][26][27][28][29][30]. An overview of these papers is given in Section 1.…”