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Turbo coding is an iterated soft-decoding scheme that combines two or more relatively simple convolutional codes and an interleaver to produce a block code that can perform to within a fraction of a decibel of the Shannon limit.
Error-correcting codes are used in lower-layer communication such as cellular network, high-speed fiber-optic communication and Wi-Fi, [11] [12] as well as for reliable storage in media such as flash memory, hard disk and RAM. [13] Error-correcting codes are usually distinguished between convolutional codes and block codes:
The DVB-S2 selection committee made decoder complexity estimates for the turbo code proposals using a much less efficient serial decoder architecture rather than a parallel decoder architecture. This forced the turbo code proposals to use frame sizes on the order of one half the frame size of the LDPC proposals. [citation needed]
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GOtv is a pay television terrestrial service in sub-Saharan Africa owned by broadcaster MultiChoice and launched on 5 September 2011. [1] It mainly consists of African and international programming. [ 2 ] [ 3 ] [ 4 ]
Platco Digital OpenView HD and eMedia Investments groups launch it first free to air satellite decoder on onces off fee to purchase Set-top box on 15 October 2013 and channels e.tv and SABC of terrestrial channel to direct-to-home (DTH) Satellite openview HD. Along with (DTT) Terrestrial migration go digital decoder on 1 October 2015.
Reed & Solomon (1960) described a theoretical decoder that corrected errors by finding the most popular message polynomial. The decoder only knows the set of values to and which encoding method was used to generate the codeword's sequence of values. The original message, the polynomial, and any errors are unknown.
A codec is a computer hardware or software component that encodes or decodes a data stream or signal. [1] [2] [3] Codec is a portmanteau of coder/decoder. [4] In electronic communications, an endec is a device that acts as both an encoder and a decoder on a signal or data stream, [5] and hence is a type of codec. Endec is a portmanteau of ...