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The need for increased data rates has led towards the development of advanced broadband satellite systems able to achieve higher capacity for providing Internet and backbone services in remote areas. Aside of the more conventional geostationary orbit (GEO), Medium Earth Orbit (MEO) satellite constellations are envisaged due to their advantages in terms of shorter link path and low latency; MEO satellite...
In this paper, the performance of a Medium Earth Orbit (MEO) satellite trunking system operating in Ka-band in terms of capacity statistics is studied, taking into account sophisticated propagation and physical layer tools. First, the satellite system model is presented and some general considerations of the MEO constellation and network are given. Afterwards, a tool for generating atmospheric attenuation...
A wide variety of imperfections impact end‐to‐end performance in multiple‐carrier per transponder transparent satellite links. Analysis of the link architecture leads to the identification of the sources and characteristics of distortion experienced by a typical multi‐carrier signal. This paper introduces a new remote pre‐compensation technique that takes this analysis into account to compensate for...
In this work, we study the design of a precoder on the user downlink of a multibeam satellite channel. The variations in channel due to phase noise introduced by on-board oscillators and the long round trip delay result in outdated channel information at the transmitter. The phase uncertainty is modelled and a robust design framework is formulated based on availability and power constraints. The optimization...
The work presented in this paper aims at illustrating the improvements foreseen for the Payload Data Transmitter of Near Earth and Deep Space scientific missions. Taking advantage of technology evolution combined with innovative architectures and advanced digital signal processing, the paper shows how to increase dramatically the data return in severely power-constrained scenarios, typical of Deep...
Rapidly increasing requirements for Earth Observation (EO) data via Low Earth Orbit (LEO) satellites push operation of the corresponding systems to higher frequency bands and particularly the Ka band, where more spectrum is available but atmospheric effects combined with the motion of the LEO satellite form a new propagation environment. Unfortunately, due to the lack of available experimental data,...
The mobile satellite broadcasting arena is witnessing a constant increase in demand for improved transmission quality and higher number of services in order to remain on par with the corresponding terrestrial counterparts. A promising way forward in this regard is the migration from the conventional single polarization per beam to an advanced dual polarization per beam architecture for effective spectrum...
The paper carries out a preliminary assessment of how mobile satellite broadcasting (MSB) systems can increase their capacity potential with a high degree of flexibility and, at the same time, remain on par with wireless terrestrial counterparts. As argued in this work, a promising way forward in this regard is the migration from the conventional single polarization per beam to an advanced dual polarization...
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