Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1998-04-29
2000-10-24
Moise, Emmanuel L.
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
714784, 714786, 370307, 370319, 370320, 455 133, H03M 1300
Patent
active
061382612
ABSTRACT:
The present invention provides a method for custom coding uplink signals and downlink beams in a satellite communications system. The method includes the step of applying, at a ground station (100), an outer code (102) to an uplink signal to produce an outer coded uplink signal. Next, the ground station (100) applies a selected reduced complexity inner code (104) to the outer coded uplink signal to produce a concatenated coded uplink signal. The ground station (100) transmits the concatenated coded uplink signal to a satellite (110). At the satellite (110), the inner code of the concatenated coded uplink signal is decoded (116) to produce an outer coded satellite data stream. Next, the satellite (110) applies a selected inner code (120) to a portion of the outer coded satellite data stream to produce a concatenated coded satellite data stream. The satellite (110) then transmits the concatenated coded satellite data stream in a downlink beam to a destination ground station (126).
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Display exhibits at the Cincinnati Fire Show Mar. 23, 1994 showing On/Off switch, dimmer, battery and liquid crystal.
Kchao Chamroeun
Perahia Eldad
Wilcoxson Donald C.
Moise Emmanuel L.
TRW Inc.
Yatsko Michael S.
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