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Codes in general are often denoted by the letter C, and a code of length n and of rank k (i.e., having n code words in its basis and k rows in its generating matrix) is generally referred to as an (n, k) code. Linear block codes are frequently denoted as [n, k, d] codes, where d refers to the code's minimum Hamming distance between any two code ...
2. ^ Grey areas indicate non-assigned code points Template documentation [ view ] [ edit ] [ history ] [ purge ] {{ Unicode chart Linear A }} provides a list of Unicode code points in the Linear A block.
Examples of block codes are Reed–Solomon codes, Hamming codes, Hadamard codes, Expander codes, Golay codes, Reed–Muller codes and Polar codes. These examples also belong to the class of linear codes, and hence they are called linear block codes. More particularly, these codes are known as algebraic block codes, or cyclic block codes ...
Formally, a parity check matrix H of a linear code C is a generator matrix of the dual code, C ⊥. This means that a codeword c is in C if and only if the matrix-vector product Hc ⊤ = 0 (some authors [1] would write this in an equivalent form, cH ⊤ = 0.) The rows of a parity check matrix are the coefficients of the parity check equations. [2]
Linear block code Polynomial code Cyclic code BCH code Reed–Solomon code: Block length: n = q − 1: Message length: k: Distance: n − k + 1: Alphabet size: q = p m (p prime) Notation [n, k, n − k + 1] q-code: Algorithms; Berlekamp–Massey Euclidean et al. Properties; Maximum-distance separable code
Hence the rate of Hamming codes is R = k / n = 1 − r / (2 r − 1), which is the highest possible for codes with minimum distance of three (i.e., the minimal number of bit changes needed to go from any code word to any other code word is three) and block length 2 r − 1.
In coding theory, Hamming(7,4) is a linear error-correcting code that encodes four bits of data into seven bits by adding three parity bits. It is a member of a larger family of Hamming codes, but the term Hamming code often refers to this specific code that Richard W. Hamming introduced in 1950.
Indeed I designed the box with block codes in mind. Maybe this infobox should really be an infobox for block codes. I've added the box only to block codes so far, and I do not plan to add it to non-block codes. As types I've always chosen linear block code, but I am not sure this is the best thing to do. Having a mechanism to display the ...
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