Título
Interference analysis in low earth orbit satellite systems
Autor
Elsa Yolanda Torres Torres
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
The LEO satellite systems will play an important role in the future personal communications
networks because of their several advantages over GEO and MEO satellite systems.
The extensive frequency reuse in a LEO Satellite System, in order to enhance the capacity,
produces cochannel interference no matter what kind of multiple access scheme it is based
on. On previous work, the carrier-to-interference ratio has been analyzed on a satellite
placed only at the equator and only for the uplink case at co-rotation orbits. Therefore, it
is important to evaluate the analysis for an upper latitude because the population is more
concentrated around +40° of latitude. The downlink case is also relevant to analyze in order
to know the level of the desired signal over the interference, as well as the counter-rotating
orbits. The present thesis analyzes and evaluates different scenarios for FDMA and CDMA
at two different latitudes at co and counter rotating orbits. It also shows the variation of
the carrier-to-interference ratio and the outage probability over different frequency reuse
schemes for uplink and downlink. Also an exponential model is proposed and included for the spot-beam antenna gain.
Editor
Instituto Tecnológico y de Estudios Superiores de Monterrey
Fecha de publicación
1 de mayo de 2002
Tipo de publicación
Tesis de maestría
Recurso de información
Formato
application/pdf
Idioma
Inglés
Repositorio Orígen
Repositorio Institucional del Tecnológico de Monterrey
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