In information theory, a soft-decision decoder is a kind of decoding methods – a class of algorithm used to decode data that has been encoded with an error correcting code. Whereas a hard-decision decoder operates on data that take on a fixed set of possible values (typically 0 or 1 in a binary code), the inputs to a soft-decision decoder may take on a whole range of values in-between. This extra information indicates the reliability of each input data point, and is used to form better estimates of the original data. Therefore, a soft-decision decoder will typically perform better in the presence of corrupted data than its hard-decision counterpart.[1]
soft, decision, decoder, information, theory, soft, decision, decoder, kind, decoding, methods, class, algorithm, used, decode, data, that, been, encoded, with, error, correcting, code, whereas, hard, decision, decoder, operates, data, that, take, fixed, possi. In information theory a soft decision decoder is a kind of decoding methods a class of algorithm used to decode data that has been encoded with an error correcting code Whereas a hard decision decoder operates on data that take on a fixed set of possible values typically 0 or 1 in a binary code the inputs to a soft decision decoder may take on a whole range of values in between This extra information indicates the reliability of each input data point and is used to form better estimates of the original data Therefore a soft decision decoder will typically perform better in the presence of corrupted data than its hard decision counterpart 1 Soft decision decoders are often used in Viterbi decoders and turbo code decoders References Edit Proakis John 2001 Digital communications 4th ed McGraw Hill pp 457 460 ISBN 0 07 118183 0 See also EditForward error correction Soft in soft out decoder This article related to telecommunications is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Soft decision decoder amp oldid 878043295, wikipedia, wiki, book, books, library,
