Punctured code: Difference between revisions

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In [[coding theory]], '''puncturing''' is the process of removing some of the parity bits after encoding with an [[error correction and detection|error-correction code]]. This has the same effect as encoding with an error-correction code with a higher rate, or less redundancy. However, with puncturing the same decoder can be used regardless of how many bits have been punctured, thus puncturing considerably increases the flexibility of the system without significantly increasing its complexity.

[[File:Punct.png|thumb|600px| Short illustration of the puncturing procedure.]]

In some cases, a pre-defined pattern of puncturing is used in an encoder. Then, the inverse operation, known as depuncturing, is implemented by the decoder.