Viasat, Inc.

Robert Arthur Fitting

Mark J Miller

Aniruddha Das

Disclosed in one embodiment is the use of a terrestrial media access control (MAC) chip or circuit in a satellite modem. The satellite modem comprises a satellite receiver, a satellite transmitter, an adaptor, and a terrestrial MAC chip. The adapter translates between the satellite physical layer and the physical layer of the terrestrial MAC chip. Protocols, messaging and signaling is spoofed for the terrestrial MAC chip such that it can be integrated into a satellite system. The received satellite signal is filtered so select one or more sub-channels that are fed to the terrestrial MAC chip. The terrestrial MAC chip could use a variety of physical layers, for example, Data Over Cable Service Interface Specifications (DOCSIS) or World Interoperability for Microwave Access (WiMAX).

DOCSIS MAC chip adapted

Nonlinearity characterization that transmits bursts of information where symbols vary by a value Delta. The bursts can be bursts of a constant power, followed by another burst of a different constant power. An alternative burst system uses interleaved power symbols, where some symbols in a single burst are at the first power and others are at the second power. The signal-to-noise ratio of the two groups of symbols is estimated, and the difference is used to determine whether or not to reduce the amount of saturation in the transmitter.

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Carlsbad, CA, United States of America

Robert Arthur Fitting