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Line 18: ==How it works== ECC is accomplished by adding [[redundancy (information theory)\|redundancy]] to the transmitted information using an algorithm. A redundant bit may be a ~~complex~~complicated function of many original information bits. The original information may or may not appear literally in the encoded output; codes that include the unmodified input in the output are '''[[systematic code\|systematic]]''', while those that do not are '''non-systematic'''. A simplistic example of ECC is to transmit each data bit 3 times, which is known as a (3,1) [[repetition code]]. Through a noisy channel, a receiver might see 8 versions of the output, see table below.

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