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Optimal erasure codes have the property that any k out of the n code word symbols are sufficient to recover the original message (i.e., they have optimal reception efficiency). Optimal erasure codes are maximum distance separable codes (MDS codes).
Singleton bound. In coding theory, the Singleton bound, named after Richard Collom Singleton, is a relatively crude upper bound on the size of an arbitrary block code with block length , size and minimum distance . It is also known as the Joshibound. [1] proved by Joshi (1958) and even earlier by Komamiya (1953) .
The first element of a CIRC decoder is a relatively weak inner (32,28) Reed–Solomon code, shortened from a (255,251) code with 8-bit symbols. This code can correct up to 2 byte errors per 32-byte block. More importantly, it flags as erasures any uncorrectable blocks, i.e., blocks with more than 2 byte errors.
In coding theory, fountain codes (also known as rateless erasure codes) are a class of erasure codes with the property that a potentially limitless sequence of encoding symbols can be generated from a given set of source symbols such that the original source symbols can ideally be recovered from any subset of the encoding symbols of size equal to or only slightly larger than the number of ...
Raptor codes are formed by the concatenation of two codes. A fixed rate erasure code, usually with a fairly high rate, is applied as a 'pre-code' or 'outer code'.This pre-code may itself be a concatenation of multiple codes, for example in the code standardized by 3GPP a high density parity check code derived from the binary Gray sequence is concatenated with a simple regular low density ...
Erasure (duo) Erasure ( / əˈreɪʒər /) is an English synth-pop duo formed in London in 1984, [1] [2] [3] consisting of lead vocalist and songwriter Andy Bell with songwriter, producer and keyboardist Vince Clarke, previously co-founder of the band Depeche Mode and a member of synth-pop duo Yazoo. From their fourth single, "Sometimes" (1986 ...
Erasure discography. Erasure are an English synth-pop duo that have released 19 studio albums, six live albums, nine compilation albums, seven box sets, 14 extended plays, 62 singles, 14 video albums and 50 music videos. Erasure consists of keyboardist Vince Clarke and singer Andy Bell . Erasure made their debut in 1985.
Multiservice tactical brevity code. March 2023 edition cover page of the Multi-Service Brevity Codes. Multiservice tactical brevity codes are codes used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words.