WINSEM2016-17_CSE1004_ELA_2227_3_15BCE0375_1.pdf

WINSEM2016-17_CSE1004_ELA_2227_3_15BCE0375_1.pdf - ERROR...

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ERROR DETECTION & CORRECTION USING CRC NAME: SINGU SAI VARUN TEJA CHOWDARY REG.NO: 15BCE0375 SLOT: L9+L10 FACULTY: JAISANKAR N TASK: ERROR DETECTION & CORRECTION USING CRC DESCRIPTION: A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents. On retrieval, the calculation is repeated and, in the event the check values do not match, corrective action can be taken against data corruption. CRCs are so called because the check (data verification) value is a redundancy (it expands the message without adding information) and the algorithm is based on cyclic codes. CRCs are popular because they are simple to implement in binary hardware, easy to analyze mathematically, and particularly good at detecting common errors caused by noise in transmission channels. Because the check value has a fixed
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