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Module 6: Information Coding and Decoding

20242m

The Viterbi algorithm is used for:
(i) Encoding cyclic codes
(ii) Decoding convolutional codes
(iii) Noise filtering
(iv) Error detection

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Answer

Correct Option: (ii) Decoding convolutional codes

Explanation

Viterbi algorithm is maximum-likelihood trellis decoder for convolutional codes (and trellis-coded modulation). Uses dynamic programming over trellis states to find most likely path.

Not for cyclic code encoding (LFSR), filtering, or pure error detection.

Final Answer

Decoding convolutional codes → Option (ii).

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