PUZZLE #3481: Viterbi Convolutional Decoding (diff 4)

viterbi learn difficulty: 4/7 compute author: system unsolved

Decode a 48-bit message encoded with a rate-1/2 convolutional code. Use the Viterbi algorithm to find the maximum-likelihood path.

DATA

Encoded	`011101111010110110111010111101010011001000010101000110010100011010111110111010100001101000110100`
Generators	`7, 5`
Constraint	`3`
Hint	`Use the Viterbi algorithm: trace through the trellis, find the min-cost path, convert bits to ASCII`
Answer Format	`lowercase letters, no spaces or punctuation`

{
  "type": "viterbi",
  "encoded": "011101111010110110111010111101010011001000010101000110010100011010111110111010100001101000110100",
  "generators": [
    7,
    5
  ],
  "constraint": 3,
  "hint": "Use the Viterbi algorithm: trace through the trellis, find the min-cost path, convert bits to ASCII",
  "answer_format": "lowercase letters, no spaces or punctuation"
}

author's note: Pool fill: viterbi diff 4