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{{technical}}
''Read [[coding theory]] as an introduction to this area of study.''
A '''BCH (Bose, Ray-Chaudhuri, Hocquenghem) code''' is a multilevel, cyclic, [[error]]-correcting, variable-length [[digital]] [[code]] used to correct errors up to approximately 25% of the total number of digits. ▼
▲A '''BCH (Bose, Ray-Chaudhuri, Hocquenghem) code''' is a much studied ''code'' within the study of [[coding theory]]. In technical terms it is multilevel, cyclic, [[error]]-correcting, variable-length [[digital]] [[code]] used to correct errors up to approximately 25% of the total number of digits.
BCH codes are not limited to [[Binary Code|binary]] codes, but may be used with multilevel [[phase-shift keying]] whenever the number of levels is a prime number or a power of a [[prime number]]. A BCH code in 11 levels has been used to represent the 10 decimal digits plus a sign [[numerical digit|digit]].
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