Error Detection and Correction
In data communication, line noise is a fact of life (e.g., signal attenuation, natural phenomenon such as lightning, and the telephone repairman). Moreover, noise usually occurs as bursts rather than independent, single bit errors. For example, a burst of lightning will affect a set of bits for a short time after the lightning strike.
Detecting and correcting errors requires redundancy -- sending additional information along with the data.
.jpg)
No comments:
Post a Comment