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The term coding has the following meanings: - In communications systems, the altering of the characteristics of a signal to make the signal more suitable for an intended application, such as optimizing the signal for transmission, improving transmission quality and fidelity, modifying the signal spectrum, increasing the information content, providing error detection and/or correction, and providing data security (Note: A single coding scheme usually does not provide more than one or two specific capabilities. Different codes have different sets of advantages and disadvantages.)
- In communications and computer systems, implementing rules that are used to map the elements of one set onto the elements of another set, usually on a one-to-one basis
- The digital encoding of an analog signal and, conversely, decoding to an analog signal
- Computer programming
- The process of classification of information (vs. use of "free text" e.g. in Medical Informatics)
Source: Federal Standard 1037CFederal Standard 1037C entitled Telecommunications: Glossary of Telecommunication Terms is a U. Federal Standard, issued by the General Services Administration pursuant to the Federal Property and Administrative Services Act of 1949, as amended. This docu
1 See also
- CodeFor other senses of the word "code", see code (disambiguation). In communications, a code is a rule for converting a piece of information (for example, a letter, word, or phrase) into another form or representation, not necessarily of the same sort. In co
- Entropy coding
2 External links
- The on-line textbook: Information Theory, Inference, and Learning Algorithms, by David MacKay , contains chapters on data-compression codes (including symbol codes such as Huffman codes, and arithmetic code s); hash codes (which are used for verifying data integrity and for rapid information recall); error-correcting codes (including elementary error-correcting codes, the theoretical limits of error-correction, and the latest state-of-the-art error-correcting codes, including low-density parity-check codeIn information theory, a low-density parity-check code (LDPC code is a code that uses a sparse parity-check matrix. This sparse matrix is randomly generated, subject to the sparsity constraints. These codes are among the state of the art codes (2004).s, turbo codeTurbo codes are a class of recently-developed high-performance error correction codes finding use in deep-space satellite communications and other applications where designers seek to achieve maximal information transfer over a limited-bandwidth communicas, and digital fountain code s).
