Multi-resolution Viterbi decoding technique

Details Multi-resolution Viterbi decoding technique Multi-resolution Viterbi decoding technique

2005-09-20

2005-09-20

Lamarre, Guy (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S796000

Reexamination Certificate

active

06948114

ABSTRACT:
A method for decoding an encoded signal. A first step generates a plurality of first precision state metrics for a decoder trellis in response to a plurality of first precision branch metrics. A second step generates a plurality of second precision state metrics for a selected subset of the first precision state metrics in response to a plurality of second precision branch metrics. A third step replaces the selected subset of first precision state metrics with the second precision state metrics. A fourth step stores the first precision state metrics and the second precision state metrics.

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“Error Bounds for Convolutional Codes and an Asymptotically Optimum Decoding Algorithm”, By Andrew J. Viterbi, IEEE Transactions on Information Theory, vol. IT-13, Apr. 1967, pp. 260-269.
AHA Application Note—“Soft Decision Thresholds and Effects on Viterbi Performance”, Jul. 1995, p. 1-8.
“A Tutorial on Convolutional Coding with Viterbi Decoding”, By Chip Fleming of Spectrum Applications, Updated Nov. 27, 2001 31 pages.

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