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Backward Error Control

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re-send information. Backward Error Correction is used in situations where some of the transmitted data has been lost or corrupted during transit and the transmitting device must resend the information in order for the receiving

Backward Error Correction

device to understand the transmission. Backward Error Correction is the opposite of “Forward Error backward error analysis Correction”, in which a transmitting device simply sends redundant information to make up for any potential errors. How Backward Error backward error recovery Correction Works Backward Error Correction is dependent on a number of protocols and algorithms, such as parity bits, cyclic redundancy checks, and longitudinal redundancy checks, but relies on the same procedure. As usual, a transmitting device

Forward And Backward Error

will send data to a receiving device. The receiving device will then run checks to ensure that all of the information is present, readable, and makes sense. If the received information does not make sense, is not all there, or cannot be read for any reason, the receiving device will send a request to the transmitting device to resend that data. Applications Backward Error Correction is often used instead of

Relative Backward Error

Forward Error Correction because it requires less bandwidth. However, because Backward Error Correction requires the receiving device to receive a signal before it requests redundant information, it requires more time than Forward Error Correction and may even use more bandwidth for individual transfers due to constant messaging between the two devices. While Forward Error Correction is usually preferred on systems that are prone to errors, such as long-distance communications systems, Backward Error Correction is ideal for systems that rarely have errors or only handle small amounts of data. Follow Us! Rate this article: ★ ★ ★ ★ ★ Backward Error Correction (BEC), 4.67 / 5 (3 votes) You need to enable JavaScript to vote Mail this article Print this article Last updated 11 March, 2016. Related Posts Ka Band The Ka band uplink uses frequencies between 27.5GHz and 31Ghz and the downlink uses frequencies ... VSAT (Very Small Aperture Terminal) VSAT (Very Small Aperture Terminal) is basically a two-way satellite ground station with a less ... Azimuth Azimuth is a measurement at an angle used in the spherical coordinate system. To find ... Search for: ReferenceSoftware Tutorials Unit Conversion Practice Tests Web Tools Site Index Audio-Video Databases Electronics File Compression File Conversion Gaming Graphics Hardware Internet IT Management Macintosh Microsoft Window

control. There are different communications media with different quality of service (QOS). Consequently, there are several error detection and control normwise backward error schemes for different signal conditions. Some fundamental methods have existed

Difference Between Forward And Backward Error Correction

for decades. In addition, there are also new methods that can take advantage of the nature error detection and correction of the signal type. These methods can be used to ensure reliable or adequate communications and faster data transfer rates which are used in today's innovative http://www.tech-faq.com/backward-error-correction-bec.html applications. 1. Error sources No errors can occur in the ideal transmission medium. However, none of the transmission media is ideal. The signal representing the data is always subject to various error sources. As the signal propagates along the transmission media its amplitude decreases. This phenomenon is called as the signal attenuation. The http://www.tml.tkk.fi/Studies/Tik-110.300/1998/Essays/error_detection.html signal cannot be detected if it is too weak. In addition, as the length of the medium increases the waveform also changes during the transmission. This phenomenon is called as the delay distortion. The signal cannot be recognized if it is too distorted. Furthermore, the transmission media can also be a subject to interference resulting from other cables or signals caused by electromagnetic radiation. The medium itself may also cause constant white noise. All transmission errors increase as the length of the transmission medium inreases. [6] 2 Error bursts In practice, data communications systems are designed so that the transmission errors are within acceptable rate. Under normal circumstanced there are only few errors. However, it is possible that the signal conditions can be sometimes so weak that sometimes the signal cannot be received at all. It is also possible that sometimes the interference signal is stronger than the signal to be transmitted. Consequently, the data sent dur

to the emerging field of microfluidics. The book shows you how to take advantage of the performance benefits of microfluidics and serves as your instant reference for state-of-the-art technology and applications in this cutting-edge...https://books.google.com.ph/books/about/Telecommunications_Technology_Handbook.html?id=ZO9RWurSS0IC&utm_source=gb-gplus-shareTelecommunications Technology HandbookMy libraryHelpAdvanced Book SearchGet https://books.google.com/books?id=ZO9RWurSS0IC&pg=PA89&lpg=PA89&dq=backward+error+control&source=bl&ots=mcbQz3gzv0&sig=8ru5jtWD7tBh8CnoAaTS-lCrIFw&hl=en&sa=X&ved=0ahUKEwjYv72x0q_PAhVL6YMKHfygB7YQ6AEIUDAG print bookNo eBook availableArtech HouseAmazon.comNational BookstorePowerbooksFind in a libraryAll sellers»Shop for Books on Google PlayBrowse the world's largest eBookstore and start reading today on the web, tablet, phone, or ereader.Go to Google Play Now »Telecommunications Technology HandbookDaniel MinoliArtech House, 2003 - Technology & Engineering - 785 pages 0 Reviewshttps://books.google.com.ph/books/about/Telecommunications_Technology_Handbook.html?id=ZO9RWurSS0ICLook to this authoritative, new resource for a comprehensive backward error introduction to the emerging field of microfluidics. The book shows you how to take advantage of the performance benefits of microfluidics and serves as your instant reference for state-of-the-art technology and applications in this cutting-edge area. It offers you practical guidance in choosing the best fabrication and enabling technology for a specific microfluidic application, and shows backward error correction you how to design a microfluidic device. This forward-looking resource identifies and discusses the broad range of microfluidic applications including, fluid control devices, gas and fluid measurement devices, medical testing equipment, and implantable drug pumps. You get simple calculations, ready-to-use data tables, and rules of thumb that help you make design decisions and determine device characteristic Preview this book » What people are saying-Write a reviewWe haven't found any reviews in the usual places.Selected pagesTitle PageTable of ContentsIndexReferencesContentsIII1 IV6 V10 VI12 VIII15 XI23 XII28 XIII30 CI311 CII328 CIII335 CIV339 CV342 CVI355 CVII363 CVIII368 MoreXIV34 XV38 XVI41 XVII44 XVIII46 XIX47 XX51 XXI53 XXII55 XXIV57 XXV59 XXVI66 XXVII68 XXVIII69 XXIX73 XXX77 XXXI84 XXXII86 XXXIII87 XXXIV92 XXXV95 XXXVI96 XXXVII99 XXXVIII100 XXXIX110 XL112 XLII113 XLIII115 XLIV116 XLV117 XLVI120 XLVII121 XLVIII122 XLIX123 L129 LII133 LIII135 LIV141 LV143 LVI148 LVII159 LVIII160 LIX161 LX164 LXI170 LXII172 LXIII175 LXIV176 LXV179 LXVI182 LXVII185 LXVIII193 LXIX195 LXX196 LXXI197 LXXII207 LXXIII208 LXXV214 LXXVI215 LXXVII216 LXXVIII220 LXXIX221 LXXX222 LXXXI223 LXXXIII232 LXXXIV233 LXXXVII236 LXXXVIII238 LXXXIX240 XC241 XCI243 XCII245 XCIII246 XCIV251 XCV25

 

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