The transmission of signals in a hybrid satellite-terrestrial system (HSTS) in the presence of co-channel interference (CCI) is considered in this study. Specifically, we examine the problem of amplify-and-forward (AF)-based relaying in a hybrid satellite-terrestrial link, where the relay node is operating in the presence of a dominant co-channel interferer. It is assumed that direct connection...

Title of dissertation: MULTICAST COMMUNICATION SUPPORT OVER SATELLITE NETWORKS Gün Akkor, Doctor of Philosophy, 2005 Dissertation directed by: Professor John S. Baras Department of Electrical and Computer Engineering In this dissertation, we focus on providing multicast communication support over satellite networks. We investigate the possible performance enhancements in terms of the throughput...

This paper is focused upon implementation aspects of a real-time simulator applicable to narrowband land mobile satellite channels. The satellite channel is mainly affected by shadowing. If a direct signal component exists (line of sight (LOS) conditions), the channel is in a so-called good/clear state and the probability density function (pdf) of the signal amplitude is Rician distributed. The...

Channel modeling of unmanned aerial vehicles (UAVs) from wireless communications has gained great interest for rapid deployment in communication. The UAV channel its own distinctive characteristics compared to satellite and cellular networks. Many proposed techniques consider formulate the UAVs as a classification problem, where key is extract discriminative features signal. For this issue, we ...

In this paper, we describe our work on developing and evaluating detailed OPNET simulation models of an enhanced Very Small Aperture Terminal (VSAT) satellite Internet gateway and an enhanced satellite hub based on Cerona SkySPAN technology with capacity and latency optimizations in the return channel so as to allow significantly higher number of users and a better user experience. The Cerona S...

Abstract The requests of broadband coverage area and the expected user demand is satisfied by satellite industry using multiple spot beams high throughput satellites with fixed multi-beam pattern footprint planning. technology core high-throughput technology, means to efficiently reuse spectrum a full-frequency scheme. In order study channel capacity limit systems, Wiener-Gaussian access model ...

Low-Earth Orbit (LEO) satellite systems are intended to have an important part of the future generation of mobile telecommunication systems. They aim to provide diierent services to various populations of users. Each class of users requires a certain Quality of Service (QoS) and thus a given part of the shared channel resource. In this paper, LEO satellite systems based on an earth-xed cell con...

Within this thesis, the satellite broadcast scenario of geostationary satellites is reviewed. The densely crowded geostationary arc in the common broadcast frequencies may create significant interference from adjacent satellites (ASI). The possible use of multiple-input receivers and of interference processing techniques is analyzed in this specific context. In addition the synchronization prob...

The KnightSat II is the University of Central Florida’s entry in the sixth iteration of the University Nanosatellite Program. The principle objective of the satellite is to deploy a gossamer sail, which will dramatically increase the aerodynamic drag acting on the satellite and reduce the time it will take to deorbit. A prototype sail and deployment system has been successfully built and tested...

A new nonlinear equalizer for digital transmission over a nonlinear satellite channel with a PSK modulation is presented in this paper. The nonlinear channel under consideration is assumed to have a Volterra series representation. By considering the channel equalization as a fixed point problem and taking advantage of the properties of a contraction m a p ping, we show that the transmitted data...