Space Exploration Technologies Corp.

Torbjorn Larsson

Jeffrey C Strait

Chen Chen

Martin S McCormick

Ronald Gottula

Alazar Tamrat

Stephan O Roche

Philip J Treigherman

A modem is configurable on a satellite, user terminal or gateway generates a radio frequency (RF) signal using an orthogonal frequency division multiplexing (OFDM) protocol including a radio frame including one or more bursts. A burst of the one or more bursts includes a first portion including burst detection data, a second portion including channel characteristic estimation data, a third portion including payload data, and fourth and fifth portions including pilot data. The first portion in a time domain is included in the burst prior to the second, third, fourth, and fifth portions. The first portion can include a pseudo-random noise sequence inserted in the time domain. The same physical modem can be configured to transmit signals on an uplink or downlink between a user terminal and a satellite or on the uplink or downlink between the satellite and the gateway.

Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for satellite to gateway uplink and downlink communications

Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for same

Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for satellite to user terminal downlink communications

Configurable orthogonal frequency division multiplexing (OFDM) signal and transmitter and receiver for user terminal to satellite uplink communications

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Escondido, CA, United States of America

Torbjorn Larsson