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{{Short description|Signal coding technique}}
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.▼
{{confuse|Puncturing (topology)}}
▲In [[coding theory]], '''puncturing''' is the process of removing some of the [[Parity bit|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.]]
Puncturing is used in [[UMTS]] during the rate matching process. It is also used in [[Wi-Fi]], Wi-SUN, [[GPRS]]
Puncturing is often used with the [[Viterbi algorithm]] in coding systems.
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==See also==
* [[Singleton bound]], an upper bound in coding theory
==References==
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