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A Practical Simulation Tool for Predicting Spectral Regrowth in Communication Satellite Receivers

Authors:
Veli Yanikgonul
Murat Husnu Sazli
Lokman Kuzu
Mesut Gokten
Ahmet Fazil Yagli

Keywords: Intermodulation distortion; spectral regrowth; satellite communications

Abstract:
The intermodulation distortion phenomena caused by nonlinear characteristic of active RF equipments is a significant source of system impairment in satellite communications. Telecommunications signals are usually composed of more than one carrier modulated by information signal. When number of carriers passing through a nonlinear medium increases, which is the case in communications satellite receivers, the prediction of the intermodulation distortion becomes more and more complex. Considering the scarcity of frequency spectrum and other resources in orbit, satellite channel performances should delicately be examined in order to ensure efficient and uninterrupted communications through all channels and avoid any channel failure due to intermodulation phenomena. This paper presents a practical tool for calculating and simulating the effect of intermodulation signal distortion and C/I performances of the broadband satellite receivers placed at the communication satellite payload input section. With this tool, the effect of a collocated satellite system operating in an adjacent frequency band can also be easily calculated.

Pages: 6 to 11

Copyright: Copyright (c) IARIA, 2012

Publication date: April 29, 2012

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-194-6

Location: Chamonix, France

Dates: from April 29, 2012 to May 4, 2012