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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Arbitrarily varying channel ： ウィキペディア英語版 Arbitrarily varying channel An arbitrarily varying channel (AVC) is a communication channel model used in coding theory, and was first introduced by Blackwell, Breiman, and Thomasian. This particular channel has unknown parameters that can change over time and these changes may not have a uniform pattern during the transmission of a codeword. $\backslash textstyle\; n$ uses of this channel can be described using a stochastic matrix $\backslash textstyle\; W^n:\; X^n\; \backslash times$ $\backslash textstyle\; S^n\; \backslash rightarrow\; Y^n$, where $\backslash textstyle\; X$ is the input alphabet, $\backslash textstyle\; Y$ is the output alphabet, and $\backslash textstyle\; W^n\; (y\; |\; x,\; s)$ is the probability over a given set of states $\backslash textstyle\; S$, that the transmitted input $\backslash textstyle\; x\; =\; (x\_1,\; \backslash ldots,\; x\_n)$ leads to the received output $\backslash textstyle\; y\; =\; (y\_1,\; \backslash ldots,\; y\_n)$. The state $\backslash textstyle\; s\_i$ in set $\backslash textstyle\; S$ can vary arbitrarily at each time unit $\backslash textstyle\; i$. This channel was developed as an alternative to Shannon's Binary Symmetric Channel (BSC), where the entire nature of the channel is known, to be more realistic to actual network channel situations. ==Capacities and associated proofs== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arbitrarily varying channel」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.