Viterbi detector for digital signal

Details Viterbi detector for digital signal Viterbi detector for digital signal

1988-01-25

1989-07-11

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 43, 375101, H04L 100

Patent

active

048478717

ABSTRACT:
A plurality of assumed detection value series correspond to combinations of a plurality of Viterbi detection series and a plurality of assumed detection values. The Viterbi detection series correspond to possible survived paths. The assumed detection values correspond to a current input value. A data series corresponds to intersymbol interference. Assumed input amplitude values are determined in accordance with the assumed detection value series and the data series. Differences between the assumed input amplitude values and the current input value are calculated. Likelihoods corresponding to degrees of sureness of survived path branches are calculated on the basis of the calculated differences. One of the possible survived paths is selected in accordance with the calculated likelihoods. A detection value is generated in accordance with the selected survived path.

REFERENCES:
patent: 4536878 (1985-08-01), Rattlingourd et al.
patent: 4710746 (1987-12-01), Shimada et al.

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