Paper Info
Title
A Novel Cognitive Satellite Network With GEO and LEO Broadband Systems in the Downlink Case.
Abstract
With the development of satellite communication, the number of satellites in space continuously increases. However, the available spectrum resources are scarce. To address the spectrum scarcity, sharing the spectrum between different communication systems is a promising option. In this paper, a novel cognitive satellite network with geostationary earth orbit (GEO) and low earth orbit (LEO) broadband systems is studied in the downlink case. First, we present a general interference analysis model and simplify it by transforming the spatial dimension into the time dimension according to the satellite motion. Based on the interference analysis, an optimization algorithm with beamhopping and adaptive power control techniques is proposed, which can simultaneously enhance the spectral efficiency and protect the primary system. The system performance of the coexistence scenario is evaluated in terms of the system throughput. Numerical results demonstrate that the spectrum-sharing method between GEO and LEO systems is feasible, and the cognitive network can achieve a high spectral efficiency. Furthermore, the factors that affect the system in the spectral coexistence scenario are analyzed.
Year
DOI
Venue
2018
10.1109/ACCESS.2018.2831218
IEEE ACCESS
Keywords
Field
DocType
Cognitive satellite network,broadband satellite communication,dual satellite coexistence,beamhopping,adaptive power control
Satellite,Spectrum management,Computer science,Communications system,Real-time computing,Spectral efficiency,Communications satellite,Telecommunications link,Distributed computing,Geostationary orbit,Cognitive network
Journal
Volume
ISSN
Citations 
6
2169-3536
1
PageRank 
References 
Authors
0.36
0
5
Name
Order
Citations
PageRank
Chuang Wang111.03
Dongming Bian2218.58
Shengchao Shi3153.01
Xu, J.42316.58
Gengxin Zhang52913.80