Viterbi decoder with reduced bit in branching metering computation processing

Viterbi decoder with reduced bit in branching metering computation processing

  • CN 1,309,471 A
  • Filed: 12/20/2000
  • Published: 08/22/2001
  • Est. Priority Date: 12/20/1999
  • Status: Abandoned Application
First Claim
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1. path metric computational methods, it is by deriving path metric from the code word of convolution code with comparing from the symbol of the specified data of the conversion acquisition that is used for the received data that path metric calculates, and described method comprises the steps:

  • Described specified data is divided into symbol and tolerance and output;

    Determine whether the described symbol that separates is complementary with code word;

    According to coupling or unmatched result, when mating, they select and output " 0 ", when not matching, they select and export described tolerance;

    AndSelected output when symbol mates is added to when symbol does not match in the selected output, to be used to calculate path metric.

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