Viasat, Inc.

Changping Li

John Hai O'Neill

Brian T Sleight

Donald C Wilcoxson

Daniel Chester

Donald Wesley Becker

Nirmalkumar Velayudhan

Veena Padmanabhan

Arthur Senyue Loh

Vitaliy Sivetsiy

Techniques for improving data rates at mobile terminals that are subject to periodic channel interruptions in a beyond-line-of-sight communication system are disclosed, including improved encoding and decoding systems that identify blockages and modify receiver operation during blockages to reduce data errors. In certain embodiments, encoding, symbol mapping, interleaving, and use of unique periodic identifiers function to enable a series of packets that may be received in a blockage impaired channel with reduced errors.

Cyclical obstruction communication system

Embodiments provide methods, systems, and apparatuses for adaptive coding, spreading, and modulating over a satellite communication channel. In some embodiments, a method of adaptive coding, sampling, and modulating over a satellite communication channel may include providing multiple data frames. At least one modcode partition may be provided for each data frame. The modcode partitions may represent modulation, coding, spreading, and/or frame size information for respective data frames. Each data frame and the respective modcode partition may be combined to form a modcode data unit. Multiple superframes may be formed. Each superframe may include a first known sequence and multiple subframes. Each subframe for a respective superframe may include a portion of a respective modcode data unit. Multiple superframes may be transmitted across a wireless channel.

Mobile satellite communication

Growing community of inventors

Carlsbad, CA, United States of America

Changping Li