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Justesen code

In coding theory, Justesen codes form a class of error-correcting codes that have a constant rate, constant relative distance, and a constant alphabet size.

An example of a Justesen code, Definition & Theorem

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An example of a Justesen code

4 related topics

Definition

2 related topics

Theorem

1 related topics

Overview

9 related topics

Key facts & relationships

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Alphabet size
2
Block length
n {\displaystyle n}
Distance
δ n {\displaystyle \delta n} where δ ≥ ( 1 − R − ϵ ) H 2 − 1 ( 1 2 − ϵ ) ∼ 0.11 ( 1 − R − ϵ ) {\displaystyle \delta \geq {\Big (}1-R-\epsilon {\Big )}H_{2}^{-1}{\big (}{\frac {1…
Message length
k {\displaystyle k}
Named after
Jørn Justesen
Notation
[ n , k / 2 , δ n ] 2 {\displaystyle \left[n,k/2,\delta n\right]_{2}} -code

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Overview

Definition

Theorem

An example of a Justesen code

Advanced semantic analysis

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Map overview Semantic statistics

Justesen code

Nodes21
Edges20
Triples48
Avg. degree1.9
Density0.095238
Components1

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Justesen code

Top relations

related to References · 22
Justesen code → Atri Rudra, Coding, Concatenated, Error-Correcting Codes, Essential Coding Theory, Forney, IEEE Trans, Inf, ISBN, Justesen, Lecture, Lock-gray-alt-2, Lock-green, Lock-red-alt-2, MacWilliams, North-Holland, Prof, Sloane, The Theory, Theory
related to An example of a Justesen code · 7
Justesen code → It, Justesen, Let, MacWilliams/MacWilliams, Reed-Solomon, The, Wonzencraft
related to Property of Justesen code · 4
Justesen code → As, Justesen, We, Wonzencraft
is a · 3
Justesen code → concatenated code C, concatenation of an, linear code containing all such c.The parameters of this code are length 2m N
related to Definition · 3
Justesen code → Given, More, The Justesen
Alphabet size · 1
Justesen code → 2
Block length · 1
Justesen code → n {\displaystyle n}
Distance · 1
Justesen code → δ n {\displaystyle \delta n} where δ ≥ ( 1 − R − ϵ ) H 2 − 1 ( 1 2 − ϵ ) ∼ 0.11 ( 1 − R − ϵ ) {\displaystyle \delta \geq {\Big (}1-R-\epsilon {\Big )}H_{2}^{-1}{\big (}{\frac {1…
Message length · 1
Justesen code → k {\displaystyle k}
Named after · 1
Justesen code → Jørn Justesen

Important terminology Word statistics

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Important terminology

code codes displaystyle distance justesen rate ensemble linear relative wozencraft constant delta -1 concatenation right length alphabet size varepsilon reed

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Justesen codeAlphabet size21.00infobox
Justesen codeBlock lengthn {\displaystyle n}1.00infobox
Justesen codeDistanceδ n {\displaystyle \delta n} where δ ≥ ( 1 − R − ϵ ) H 2 − 1 ( 1 2 − ϵ ) ∼ 0.11 ( 1 − R − ϵ ) {\displaystyle \delta \geq {\Big (}1-R-\epsilon {\Big )}H_{2}^{-1}{\big (}{\frac {1…1.00infobox
Justesen codeMessage lengthk {\displaystyle k}1.00infobox
Justesen codeNamed afterJørn Justesen1.00infobox
Justesen codeNotation[ n , k / 2 , δ n ] 2 {\displaystyle \left[n,k/2,\delta n\right]_{2}} -code1.00infobox
Justesen codeRate= R 2 = k 2 n {\displaystyle {\frac {R}{2}}={\frac {k}{2n}}}1.00infobox
Justesen codeTypeLinear block code1.00infobox
Justesen codeis aconcatenation of an0.90text
Justesen codeis aconcatenated code C0.90text
Justesen codeis alinear code containing all such c.The parameters of this code are length 2m N0.90text
in the construction of small-bias sample spaces.Justesen codes are derived as the code concatenation of a Reedinstance ofThese codes have important applications in computer science0.80text

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