Family of error-correcting codes that encode data in blocks
In coding theory, block codes are a large and important family of error-correcting codes that encode data in blocks.
There is a vast number of examples for block codes, many of which have a wide range of practical applications. The abstract definition of block codes is conceptually useful because it allows coding theorists, mathematicians, and computer scientists to study the limitations of all block codes in a unified way.
Such limitations often take the form of bounds that relate different parameters of the block code to each other, such as its rate and its ability to detect and correct errors.
Examples of block codes are Reed–Solomon codes, Hamming codes, Hadamard codes, Expander codes, Golay codes, and Reed–Muller 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, because they can be generated using boolean polynomials.
Algebraic block codes are typically hard-decoded using algebraic decoders.[jargon]
The term block code may also refer to any error-correcting code that acts on a block of bits of input data to produce bits of output data . Consequently, the block coder is a memoryless device. Under this definition codes such as turbo codes, terminated convolutional codes and other iteratively decodable codes (turbo-like codes) would also be considered block codes. A non-terminated convolutional encoder would be an example of a non-block (unframed) code, which has memory and is instead classified as a tree code.
In coding theory, blockcodes are a large and important family of error-correcting codes that encode data in blocks. There is a vast number of examples...
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a fixed-length code, or a blockcode (though the term blockcode is also used for fixed-size error-correcting codes in channel coding). For example, ISO...
resembles the language Scratch. Blockly uses visual blocks that link together to make writing code easier, and can generate code in JavaScript, Lua, Dart, Python...
interleaved blocks. The message has 26 data bytes and is encoded using two Reed-Solomon codeblocks. Each block is a (255,233) Reed Solomon code (shortened...
distance of the code is also 2 k − 1 {\displaystyle 2^{k-1}} . In standard coding theory notation for blockcodes, the Hadamard code is a [ 2 k , k ,...
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"Chinese-sensitive code feature pattern detection method and system" United States Patent US10095903B2 by Ingenico Fujian Technology Co Ltd "Block decoding method...
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