Viterbi trellis coding methods and apparatus for a direct access

Details Viterbi trellis coding methods and apparatus for a direct access Viterbi trellis coding methods and apparatus for a direct access

1991-10-15

1994-07-05

Beausoliel, Jr., Robert W.

Excavating

G06F 1110

Patent

active

053274407

ABSTRACT:
Viterbi trellis coding methods and Viterbi detector apparatus are provided for detecting trellis coded data. A systolic array Viterbi detector recursively calculates path metrics and partial sums of metric update equations to determine codeword sequences having minimum mean squared error for Viterbi-type maximum-likelihood data detection. The systolic array Viterbi detector is arranged to eliminate redundant calculations and simplify hardware requirements. Modified butterfly trellis geometries and rotating state metrics arrangements are provided for simplifying the Viterbi detector.

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