Backward Error Correction Wikipedia
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citations to reliable sources. Unsourced material may be challenged and removed. (August 2008) (Learn how and when to remove this template message) In information theory and coding theory with applications in computer science and
Forward And Backward Error Correction
telecommunication, error detection and correction or error control are techniques that enable reliable hamming distance error correction delivery of digital data over unreliable communication channels. Many communication channels are subject to channel noise, and thus errors may be forward error correction wiki introduced during transmission from the source to a receiver. Error detection techniques allow detecting such errors, while error correction enables reconstruction of the original data in many cases. Contents 1 Definitions 2 History
Error Correction Code Wiki
3 Introduction 4 Implementation 5 Error detection schemes 5.1 Repetition codes 5.2 Parity bits 5.3 Checksums 5.4 Cyclic redundancy checks (CRCs) 5.5 Cryptographic hash functions 5.6 Error-correcting codes 6 Error correction 6.1 Automatic repeat request (ARQ) 6.2 Error-correcting code 6.3 Hybrid schemes 7 Applications 7.1 Internet 7.2 Deep-space telecommunications 7.3 Satellite broadcasting (DVB) 7.4 Data storage 7.5 Error-correcting memory 8 See also 9 References 10 Further reading
Error Correction And Detection
11 External links Definitions[edit] The general definitions of the terms are as follows: Error detection is the detection of errors caused by noise or other impairments during transmission from the transmitter to the receiver. Error correction is the detection of errors and reconstruction of the original, error-free data. History[edit] The modern development of error-correcting codes in 1947 is due to Richard W. Hamming.[1] A description of Hamming's code appeared in Claude Shannon's A Mathematical Theory of Communication[2] and was quickly generalized by Marcel J. E. Golay.[3] Introduction[edit] The general idea for achieving error detection and correction is to add some redundancy (i.e., some extra data) to a message, which receivers can use to check consistency of the delivered message, and to recover data determined to be corrupted. Error-detection and correction schemes can be either systematic or non-systematic: In a systematic scheme, the transmitter sends the original data, and attaches a fixed number of check bits (or parity data), which are derived from the data bits by some deterministic algorithm. If only error detection is required, a receiver can simply apply the same algorithm to the received data bits and compare its output with the received check bits; if the values
sent by the receiver indicating that it has correctly received a data frame or packet) and timeouts (specified periods of error correction code time allowed to elapse before an acknowledgment is to be received)
Error Correction Techniques
to achieve reliable data transmission over an unreliable service. If the sender does not receive an error detection and correction in computer networks acknowledgment before the timeout, it usually re-transmits the frame/packet until the sender receives an acknowledgment or exceeds a predefined number of re-transmissions . The types of https://en.wikipedia.org/wiki/Error_detection_and_correction ARQ protocols include Stop-and-wait ARQ Go-Back-N ARQ Selective Repeat ARQ / Selective Reject All three protocols usually use some form of sliding window protocol to tell the transmitter to determine which (if any) packets need to be retransmitted. These protocols reside in the Data Link or Transport Layers of the OSI model. https://en.wikipedia.org/wiki/Automatic_repeat_request A number of patents exist for the use of ARQ in live video contribution environments. In these high throughput environments negative acknowledgements are used to drive down overheads. Examples[edit] This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2012) (Learn how and when to remove this template message) The Transmission Control Protocol uses a variant of Go-Back-N ARQ to ensure reliable transmission of data over the Internet Protocol, which does not provide guaranteed delivery of packets; with Selective Acknowledgement (SACK), it uses Selective Repeat ARQ. The ITU-T G.hn standard, which provides a way to create a high-speed (up to 1 Gbit/s) local area network using existing residential wiring (power lines, telephone lines, and coaxial cables), uses Selective Repeat ARQ to ensure reliable transmission over noisy media. ARQ systems were widely used on shortwave radio to ensure reliable delivery
of 6 total. C ► Capacity-achieving codes (1 P) ► Capacity-approaching codes (5 P) ► Checksum algorithms (2 C, 27 P) ► Cyclic redundancy checks (4 https://en.wikipedia.org/wiki/Category:Error_detection_and_correction P) H ► Hash functions (3 C, 15 P) M ► Message https://www.scribd.com/document/145654486/Wiki-Error-Detection-and-Correction authentication codes (15 P) Pages in category "Error detection and correction" The following 122 pages are in this category, out of 122 total. This list may not reflect recent changes (learn more). Error detection and correctionA Acknowledgement (data networks) Alternant code AN codes Automated quality control error correction of meteorological observations Automatic repeat requestB BCH code BCJR algorithm Berger code Berlekamp–Massey algorithm Berlekamp–Welch algorithm Binary Golay code Binary Reed-Solomon Bipolar violation Burst error-correcting codeC Casting out nines Certifying algorithm Check digit Chien search Chipkill Coding gain Coding theory Concatenated error correction code Confidential incident reporting Constant-weight code Convolutional code Coset leader Cosine error effect Cross-interleaved Reed–Solomon codingD backward error correction Data Integrity Field Data scrubbing Detection error tradeoff Drop-out compensator Dual modular redundancyE Echo (computing) Enumerator polynomial Error concealment Error correction mode Error correction model Error floor Error-correcting codes with feedback EXIT chart Expander codeF File verification Folded Reed–Solomon code Forney algorithm Forward error correction Forward–backward algorithmG Generalized minimum-distance decoding Go-Back-N ARQ Group code recordingH Hadamard code Hagelbarger code Hamming code Hamming(7,4) Hash calendar Hash function Hash list Header check sequence Homomorphic signatures for network coding Hybrid automatic repeat requestI IPv4 header checksum ISO 7064 Iterative Viterbi decodingJ Justesen codeK K-independent hashingL Latin square Lexicographic code List decoding Locally decodable code Locally testable code Long code (mathematics) Longitudinal redundancy check Low-density parity-check code Luhn algorithmM Majority logic decoding Maximum likelihood sequence estimation Memory ProteXion Merkle tree Message authentication Message authentication code Multidimensional parity-check codeP Parity bit Parvaresh–Vardy code Pearson hashing Polar code (coding theory) Preparata code Pseudo bit error ratioR Rank error-correcting code Redundant array of independent memory Reed–Muller code Reed–Solomon error correction Remote error indication Repeat-accumulate code Repetition code Residual bit error rateS Sanity c
allUploadSign inJoinBooksAudiobooksComicsSheet Music You're Reading a Free Preview Pages 2 to 10 are not shown in this preview. Buy the Full Version Wiki Error Detection and CorrectionUploaded by moturakError Detection And CorrectionCode3 viewsDownloadEmbedSee MoreCopyright: Attribution Non-Commercial (BY-NC)List price: $0.00Download as PDF, TXT or read online from ScribdFlag for inappropriate content Documents similar to Wiki Error Detection and CorrectionApril 2013Dirty paper code design using nested trellisNoiseless Data Compression With Low-Density Parity-CheckUm Interfacepart3 description descriptionchapter02 system error codesYaerSapPS Attendance AdministrationEXECUTIVE COMMUNICATIONReal Image Use Case 5-2-12ch1_ScopeStatement Decision Testing Coverage Istqb Foundation Exam Exercise Book SampleBus CommSan Francisco Ruby User GroupIssues to be resolved in Torrents - Future Revolutionised File Sharing Wimax Based OfdmDecoding GsmAuthenticationprod_white_paper0900aecd8056b325.pdfUntitledGSM SystemNEC3_PSCMtech C&C 2007-0811.00-Pharmatex-2008-HKTenor_GW_to_Cisco_GWEmergency Local Control Guide 070501Rotary Code of Policies April 2016Books similar to Wiki Error Detection and CorrectionMission Critical Windows 2000 Server AdministrationHyper-V Network Virtualization CookbookHow to Use Evernote in 15 Minutes –An Unofficial Step by Step Guide for BeginnersCentOS 6 Linux Server CookbookCheck Point NGX R65 Security AdministrationBooks about Error Detection And CorrectionQuantum Information Processing and Quantum Error CorrectionData Reconciliation and Gross Error DetectionArchitecture Design for Soft ErrorsOFDM for Optical CommunicationsDigital Signal ProcessingError Coding for Arithmetic ProcessorsEssentials of Error-Control Coding TechniquesFailure-Tolerant Computer DesignDocuments about Error Detection And CorrectionStragent et. al. v. IntelAs 3956.1-1991 Information Processing Systems - 130 Mm Optical Disk Cartridge Write Once for Information InteCare & Handling of CDs & DVDsUnderlying Trends and International Price Transmission of Agricultural Commodities Federal Transfers and Fiscal Discipline in IndiaNY B33 Fire Fighting Procedures Fdr- Entire Contents- 1-1-97 Vol 1 Bk 5- HIgh Rise Office Bldgs 395UT Dallas Syllabus for mis6316.0g1.09f taught by S