Method and implemention of a traceback-free parallel viterbi...

Details Method and implemention of a traceback-free parallel viterbi... Method and implemention of a traceback-free parallel viterbi...

2005-06-07

2005-06-07

Tse, Young T. (Department: 2637)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S262000, C375S265000, C714S795000, C714S796000

Reexamination Certificate

active

06904105

ABSTRACT:
The traceback operation for a Viterbi algorithm can be minimized by producing optimal path values for each state in the trellis, and updating the optimal path values at each state for each symbol. The optimal path value can be used to quickly determine the output values for the system without requiring a traceback which would typically require a memory read for each transmitted symbol.

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patent: 6438181 (2002-08-01), Setlur et al.
patent: 6637004 (2003-10-01), Mizuno et al.
patent: 6680986 (2004-01-01), Hemmati
Andrew J. Viterbi, “Error Bounds for Convolutional Codes and an Asymptotically Optimum Decoding Algorithm”, Published in IEEE Transactions on Information Theory, vol. IT-13, pp. 260-269, in Apr. 1967.

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