verilog code for soft output viterbi decoder

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cmangaraju

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viterbi decoder verilog code

hi ,
i am doinga project on soft output viterbi decoder, i have a cofusion between soft viterbi and hard viterbi,
will , replacing hamming distance by euclidean distance become soft output viterbi decoder. please send me some material regarding this.
 

in FPGA ，the computational complexity of euclidean distance is largee than Manhattan Distance
so i think Manhattan Distance will be a better choice
concerning the soft viterbi,you will need quantitate the code
1 1--(-4,-4) use 3bit
0 0--(3,3)
 
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