Abstract
As demands on the network continue to grow, it is increasingly important to upgrade the existing infrastructure in order to offer higher bandwidth and service level guarantees to users. Next generation networks (NGNs) represent a fully IP-based architecture that is able to support different technologies. In this context, the satellite networks are considered a fundamental part for future hybrid architectures. In this scenario, knowing satellite channel propagation characteristics in order to be able to design a communication system to respond to new user needs is of fundamental importance. Many papers in the literature show channel models in different satellite scenarios both for fixed and mobile applications; however, to the best of our knowledge, nobody presents an overview on different satellite models based on Markov chains. This paper wants to present a comprehensive review of the most recent developments in satellite channel communications related to mobile services and, in particular, for the land mobile satellite systems. The work presents all different types of Markov models, from single-state to multi-state models, that have been proposed in the literature from the early 1980s.
Highlights
Satellite platforms have been and continue to be a fundamental piece of telecommunications networks due to their ability to cover large geographical areas with their footprints and to their native broadcast nature, despite their development costs
The fast growth of telecommunications and the next generation networks (NGNs) networks based on a hybrid/ multi-layer architecture make the study of satellite platforms of fundamental importance for the development of a network architecture that is able to satisfy the requests of new users’ applications
The performance of land mobile satellite (LMS) communication systems depends on several factors, including operating frequency, elevation angles, geographic location, climate, etc
Summary
Satellite platforms have been and continue to be a fundamental piece of telecommunications networks due to their ability to cover large geographical areas with their footprints and to their native broadcast nature, despite their development costs. In the context of generation networks (NGNs), satellite systems represent a fundamental architectural component composing the overall future hybrid/multi-layer architecture These networks are able to satisfy the constant need of high bandwidth by new applications offering new typologies of services for fixed and mobile users, guaranteeing, with their appliance, the quality of service (QoS) requirement through IP mechanisms such as Multi-Protocol Label Switching (MPLS), integrated services, and differentiated services. Negative meteorological conditions such as rain, ice, clouds, and, in general, gas absorption, give rise to a series of phenomena whose study is of fundamental importance in order to be able to deploy satellite networks with optimal performance In this scenario, being conscious of the propagation characteristics of the satellite channel, so as to be able to design a communication system for responding to the new user needs, is of fundamental importance.
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