Hughes Electronics Corporation

Hughes Network Systems, LLC

J Mark Steber

Richard Clewer

Bala Subramaniam

Neal David Becker

Yezdi F Antia

Yogesh Sethi

Kumud Patel

Nimesh Ambeskar

Walter Robert Kepley, Iii

Hanhui Zhang

Dan Hantz

Richard Sims

Walter Robert Kepley

A method and a satellite gateway for minimizing an impact of a noise floor variation in a spot beam satellite system. A demodulator processes digitized signals from multiple channels. Digitized signals are automatically gain controlled by respective automatic gain control components associated with respective channels. Automatic gain controlled digitized signals are downconverted and provided to a burst processor. The burst processor processes each downconverted signal and provides, with respect to each downconverted signal, an automatic gain control estimate, a code rate, and an inroute number to a processor component. The processor component determines an average automatic gain control value for each inroute, provides automatic gain control references to the respective automatic gain control components, and periodically sends noise map information to satellite terminals served by the satellite gateway. In some embodiments, the automatic gain control values are biased according to corresponding code rates.

Inroute automatic gain control detection of outroute interference

An apparatus for providing automatic gain control for use in a satellite terminal of a satellite communication system capable of transmitting a plurality of different modes of data. The apparatus includes a demodulator circuit having an analog to digital converter; a first variable attenuator having an attenuation value set on the basis of a measured power level of a predetermined data signal; and a second variable attenuator having an attenuation value set on the basis of the mode of data being received by the satellite terminal, where each of the data modes have a corresponding predetermined attenuation value associated therewith which is utilized as the attenuation value of the second variable attenuator when the satellite terminal receives the data mode.

Method and system for adaptive equalization for receivers in a wide-band satellite communications system

Method and system for automatic gain control in a satellite communications system

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Frederick, MD, United States of America

J Mark Steber