What is Error Correcting Code?
Whenever we send data over a media there is some chance to experience some errors. These errors have to correct otherwise we actual information will be changed. For this reason Error Correcting Code has been introduced which deals with detection of errors and correction of errors by introducing redundancies within the actual message bits.
The error-correcting codes are nothing but the addition of some extra bits to the actual message bits so that the receiver must properly decode the actual message signal from the encoded one and with the help of those extra bits receiver can able to sure that there is no error or some errors.
There are two techniques for error control coding, namely
Importance of Error correcting Codes:
Different kinds of channels are prone to different kinds of noise, which corrupt the data being transmitted. The noise could be caused by lightning, human errors, equipment malfunction, voltage surge etc.
Error control codes are used for accurate transfer of information from one place to another, storing data and reading it from storage. The basic idea behind error correcting codes is to add some redundancy in the form of extra symbol to a message prior to its transmission through a noisy channel. This redundancy is added in a controlled manner.
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