Puncturing

Puncturing

In coding theory, puncturing is the process of removing some of the parity bits after encoding with an 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.

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.

Puncturing is used in UMTS during the rate matching process. It is also used in GPRS and EDGE.

Puncturing is often used with the Viterbi algorithm in coding systems.


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  • Puncturing — Puncture Punc ture, v. t. [imp. & p. p. {Punctured}; p. pr. & vb. n. {Puncturing}.] To pierce with a small, pointed instrument, or the like; to prick; to make a puncture in; as, to puncture the skin. [1913 Webster] …   The Collaborative International Dictionary of English

  • puncturing — n. perforating, creating holes; piercing with a stab object, stabbing; deflating by piercing; damaging, wounding; destroying, ruining punc·ture || pʌŋktʃə(r) n. hole, perforation; blowout, flat tire v. perforate, make a hole; pierce, stab… …   English contemporary dictionary

  • Electro-puncturing — Electro puncturation E*lec tro punc tu*ra tion, Electro puncturing E*lec tro punc tur*ing (?; 135), n. (Med.) See {Electropuncture}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Convolutional code — In telecommunication, a convolutional code is a type of error correcting code in which each m bit information symbol (each m bit string) to be encoded is transformed into an n bit symbol, where m/n is the code rate (n ≥ m) and the transformation… …   Wikipedia

  • Prick — Prick, v. t. [imp. & p. p. {Pricked}; p. pr. & vb. n. {Pricking}.] [AS. prician; akin to LG. pricken, D. prikken, Dan. prikke, Sw. pricka. See {Prick}, n., and cf. {Prink}, {Prig}.] 1. To pierce slightly with a sharp pointed instrument or… …   The Collaborative International Dictionary of English

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  • puncture — I. noun Etymology: Middle English, from Latin punctura, from punctus, past participle of pungere Date: 14th century 1. an act of puncturing 2. a hole, wound, or perforation made by puncturing 3. a minute depression II. verb (punctured; punctu …   New Collegiate Dictionary

  • Razer (Robot) — Razer is a contestant on the TV show Robot Wars. Despite suffering chronic mechanical problems in its first three years, it was the champion of the fifth UK series of Robot Wars and won the first two Robot Wars World Championships. They also got… …   Wikipedia

  • Body piercing — For other uses, see Piercing (disambiguation). Nipple piercings, vertical labret piercing and stretched ears Body piercing, a form of body modification, is the practice of puncturing or cutting a part of the human body, creating an opening in… …   Wikipedia

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