Content deleted Content added
m →top: http→https for Google Books and Google News using AWB |
Added picture: punctured QR code |
||
Line 1:
[[File:Extreme QR code to Wikipedia mobile page.png|thumb|alt=A QR code overprinted by the word 'Wikipedia'|This [[QR code]] is severely punctured to make room for text. The decoder recovers the punctured data from the surviving parity bits.]]
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.
| |||