Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1997-04-21
1999-11-09
Tu, Trinh L.
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
714788, H03M 1300, G06F 1110
Patent
active
059833840
ABSTRACT:
Turbo-coding in a communications system involves coding/decoding information in stages in order to avoid retransmission of a full L-bit packet upon occurrence of a packet error. In addition to a set of code bits generated by an encoder using a turbo-coding scheme, a punctured set of code bits is generated and stored in transmitter memory. The original set of code bits is transmitted as an L-bit data packet to a receiver which stores received data samples corresponding to the original set of code bits. The receiver decodes the data packet using a turbo-decoder and determines whether the data packet has been received in error. If so, the received data samples are maintained in memory, and a request for more information is made. Some or all of the punctured information is then forwarded from the transmitter to the receiver. A second stage of turbo-decoding combines the new data samples with the stored original received data samples such that there is a high likelihood that decoding is correct at this point, but additional stages of decoding may be used.
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"The TURBO Coding Scheme," Jakob Dahl Andersen, Report IT-146 ISSN 0105-854, Jun. 1994, Institute of Telecommunication, Technical University of Denmark, pp. 1-42.
"Near Shannon Limit Error-Correcting Coding and Decoding: Turbo-Codes (1)," Claude Berrou, Alain Glavieux, Punya Thitimajshima, 1993 IEEE, pp. 1064-1070, Feb. 1993.
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Breedlove Jill M.
General Electric Company
Stoner Douglas E.
Tu Trinh L.
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