Single-cycle, soft decision, compare-select operation using dual

Details Single-cycle, soft decision, compare-select operation using dual Single-cycle, soft decision, compare-select operation using dual

1997-11-25

2000-02-22

Baker, Stephen M.

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

H03M 1312

Patent

active

060292679

ABSTRACT:
In accordance with the invention, a method of generating a soft symbol confidence level for use in decoding a received digital signal includes calculating a difference between two potential next state accumulated costs to provide a soft symbol confidence level. Simultaneously with calculating the difference between two potential next state accumulated costs, performing a compare-select operation to identify one of the two potential next state accumulated costs as an extremum of the two present state accumulated costs.

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Joeressen et al., "High-Speed VLSI Architectures for Soft-Output Viterbi Decoding", Int. Conf. on Appl. Specific Array Proc., Aug. 1992, pp. 373-384.

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