How Forward Error-correcting Codes Work
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(Discuss) Proposed since January 2015. In telecommunication, information theory, and coding theory, forward error correction (FEC) or channel coding[1] is forward error correction techniques a technique used for controlling errors in data transmission over forward error correction tutorial unreliable or noisy communication channels. The central idea is the sender encodes the message in a forward error correction example redundant way by using an error-correcting code (ECC). The American mathematician Richard Hamming pioneered this field in the 1940s and invented the first error-correcting code in
Forward Error Correction Ppt
1950: the Hamming (7,4) code.[2] The redundancy allows the receiver to detect a limited number of errors that may occur anywhere in the message, and often to correct these errors without retransmission. FEC gives the receiver the ability to correct errors without needing a reverse channel to request retransmission of data, but at forward error correction pdf the cost of a fixed, higher forward channel bandwidth. FEC is therefore applied in situations where retransmissions are costly or impossible, such as one-way communication links and when transmitting to multiple receivers in multicast. FEC information is usually added to mass storage devices to enable recovery of corrupted data, and is widely used in modems. FEC processing in a receiver may be applied to a digital bit stream or in the demodulation of a digitally modulated carrier. For the latter, FEC is an integral part of the initial analog-to-digital conversion in the receiver. The Viterbi decoder implements a soft-decision algorithm to demodulate digital data from an analog signal corrupted by noise. Many FEC coders can also generate a bit-error rate (BER) signal which can be used as feedback to fine-tune the analog receiving electronics. The noisy-channel coding theorem establishes bounds on the theoretical maximum information transfer rate of a channel with some given noise level. So
Day Code Generation Code generation is a mechanism where a compiler takes the source code as an input and converts it into machine code. This machine code is actually executed by the system. Code generation is generally considered backward error correction the last phase of compilation, although there are multiple intermediate steps performed before the
Forward Error Correction Rate
final executable is produced. These... Read more Newest Terms Digital Multimeter Digital Pen Digital Filter Burn-In Digital Control Data Link Data Key
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infrastructure View All Enterprise mobile app strategy Application development Networking Enterprise mobility management View All App delivery and modernization EMM tools Mobile security Strategy and policy Applications and infrastructure View All http://searchmobilecomputing.techtarget.com/definition/forward-error-correction Enterprise mobile app strategy Data and infrastructure Application development Networking Mobile Device Platforms and Technologies View All Apple iOS BlackBerry Google Android Microsoft Windows Wearables and emerging tech Topics Archive View All 802.11 J2ME Linux Managing Mobile Users Mobile Access Mobile and Wireless Services and Protocols Mobile Deployments Mobile Devices Mobile E-mail and Calendaring Mobile forward error Security Mobile Unified Communications Mobile VoIP Open Source Mobile Platforms PocketPC Short-Range Technologies Supply Chain Management Symbian Unified Messaging Wireless Networking Please select a category Enterprise mobility management Applications and infrastructure Mobile Device Platforms and Technologies Section Get Started News Get Started Evaluate Manage Problem Solve Sponsored Communities Home Data and infrastructure Network hardware forward error correction forward error correction (FEC) Definition forward error correction (FEC) Posted by: Margaret Rouse WhatIs.com Share this item with your network: Sponsored News How to Backup All You Want Without Consequences –SimpliVity Got Containers? You’ll Need a Way to Monitor Them –Splunk See More Vendor Resources Delivering Breakthrough Performance with 802.11ac –Ixia Application Acceleration for Satellite-Based Enterprise Services –Blue Coat Forward error correction (FEC) is a method of obtaining error control in data transmission in which the source (transmitter) sends redundant data and the destination (receiver) recognizes only the portion of the data that contains no apparent errors. Because FEC does not require handshaking between the source and the destination, it can be used for broadcasting of data to many destinations simultaneously from a single source. Download this free guide Download: Is your organization's mobile data secure? Today's IT admins face the challenging task of managing the countless amount of mobile devices that connect to enterprise networks every day. Find out how to