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Sparse graph code : ウィキペディア英語版
Sparse graph code
A Sparse graph code is a code which is represented by a sparse graph.
Any linear code can be represented as a graph, where there are two sets of nodes - a set representing the transmitted bits and another set representing the constraints that the transmitted bits have to satisfy. The state of the art classical error-correcting codes are based on sparse graphs, achieving close to the Shannon limit. The archetypal sparse-graph codes are Gallager's low-density parity-check codes.
== External links ==

* (The on-line textbook: Information Theory, Inference, and Learning Algorithms ), by David J.C. MacKay, discusses sparse-graph codes in Chapters 47-50.
*(Encyclopedia of Sparse Graph Codes )
* (Iterative Error Correction: Turbo, Low-Density Parity-Check, and Repeat-Cccumulate Codes )

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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