High data rate decoding method for coding signal processing chan

Details High data rate decoding method for coding signal processing chan High data rate decoding method for coding signal processing chan

1992-07-27

1994-01-25

Beausoliel, Jr., Robert W.

Excavating

H03M 1300

Patent

active

052822168

ABSTRACT:
A method for processing, in a signal processing channel, digital values corresponding to a digitized incoming analog signal representative of coded binary data. A state-dependent sequence detection algorithm includes two groups of appropriate functional expressions of digital sample values, which expressions are identical but offset one sample position from each other. During each iterating step with successive pairs of clock cycles, the value of each expression in the two groups of expressions is precomputed from a preselected number of sample values ahead of a then current sample value; preselected ones of these expression values are compared against an appropriate threshold, which is the same for corresponding expressions of each group, to provide respective binary decision outputs corresponding to each of the two groups; and the current state value then advances to two next successive state values. A pipelined configuration is utilized in which a different number of sample values, greater than said preselected number, is used ahead of the current sample value to allow sufficient time for precomputing said groups of expressions.

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