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serious reword (confusing SISO with turbo principle; not really "fuzzy logic"; "probabilistic" not really the correct term here"); rm MDPC link, as zillions of codes use soft decoding |
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A '''soft-in soft-out (SISO) decoder''' is a type of decoder used with [[error correcting code]]s. "Soft-in" refers to the fact that the incoming data may take on values other than 0 or 1, in order to indicate reliability. "Soft-out" refers to the fact that each [[bit]] in the decoded output also takes on a value indicating reliability.
Examples include the [[BCJR algorithm]] and the [[soft output Viterbi algorithm]].
== See also ==
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