Soft decision decoding with channel equalization

Details Soft decision decoding with channel equalization Soft decision decoding with channel equalization

H - Electricity

04

L

H04L 27/01 (2006.01) H04B 3/06 (2006.01) H04L 25/03 (2006.01)

Patent

CA 2066270

In a communications network having time-dispersed signals, there is provided a mechanism for soft decision decoding. It comprises: radio reception of a time-dispersed signal, at least partly equalizing those time-dispersal effects, recovering informa- tion contained in the signal, multiplying with that recovered information the absolute value of that at-least-partly-equalized signal (scaled by a number derived from channel conditions over a time during which at least part of the information to be recovered is distributed), and error-correcting the multiplied information by a Viterbi algorithm channel decoding scheme of error correction. Accordingly, soft decision information is generated from whithin the equalization process itself.

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