CYCLICAL OBSTRUCTION COMMUNICATION SYSTEM

摘要

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.

主权项

1. A method for receiving data at a terminal via an intermittently obstructed channel in a communication system, the method of comprising:
tracking symbol characteristics of a signal received via the intermittently obstructed channel using one or more tracking loops; demodulating the signal according to the tracked symbol characteristics to obtain demodulated data samples; decoding the demodulated data samples using a forward error correction code to obtain a series of corrected data packets; identifying a blockage event for the intermittently obstructed channel; and suppressing tracking for at least one tracking loop of the one or more tracking loops during the blockage event.