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May 7, 2017 · Introduction In telecommunication and information theory, forward error correction (FEC) is a system of error control for data transmission, whereby the sender adds redundant data to its messages, also known as an error correction code. This allows the receiver to detect and correct errors (within some bound) without the need to ask the sender ...
Sep 15, 2014 · 100 likes | 205 Views. Forward Error Correction. FEC Basic Idea. Send redundant data Receiver uses it to detect/correct errors Reduces retransmissions/ NAKs Useful when RTT is high. Types of FEC. Two types of FEC Block codes (works on blocks/packets) Hamming codes, Reed-Solomon codes. Download Presentation. rate.
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May 20, 2012 · Introduction • Forward Error Correction (FEC) is a system that adds additional information to the data stream to correct any errors that are caused by the transmission system. • Data transmission systems, such as cable modems are not real time and can resend the data if it is not received correctly.
Error correction on a tree: Instanton approach Misha Chertkov (LANL) In collaboration with: V. Chernyak (Corning) M. Stepanov (UA, Tucson) B. Vasic (UA, Tucson) Thanks: I. Gabitov (Tucson/LANL) Submitted to Phys.Rev.Lett. Forward-Error-Correction (FEC). Channel Noise. * Coding. Low Density Parity Check codes (LDPC) - Tanner graph * Decoding.
Sep 24, 2014 · 100 likes | 322 Views. FORWARD ERROR CORRECTION (FEC) CODING IN THE GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS (GSM). Dai, Shuai (Jason) Sun, Chang (Fred) Zhuang, Fuxin (Henry) March 17, 2011. Stages of Channel Coding.
Title: Forward Error Correction 1 Forward Error Correction. Steven Marx ; CSC457 ; 12/04/2001; 2 Outline. What is FEC? Why do we need it? How does it work? Where is it used? 3 What is FEC? Send k packets ; Reconstruct n packets ; Such that we can tolerate k-n losses ; Called an (n, k) FEC code ; 4 What is FEC? (2) 5 Why FEC? Alternatives ; ARQ ...
