BIPOLAR CODING

DOCID: 3927964UNCLASSIFIEDBipolar Coding and Baseband RecoveryBYI IUnclassifiedIt is sometimes desirable to code a digital baseband (random binary)signal in a three-level digital representation. For example, directrecording of a binary waveform on conventional longitudinal headtape machines is unacceptable because of the poor low frequency re-sponse of these recorders below 200 cps and the predominance of lowfrequency energy in random binary data. Bipolar coding, as will beshown, removes the req...