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Example-2:<br />
Minimum-bandwidth pulse that<br />
satisfies the duobinary pulse criterion<br />
Differential Coding: For the controlled ISI method, a zero-valued sample implies transition, that is,<br />
if a digit is detected as 1, the previous digit is 0, or vice versa. This means that the digit interpreation is<br />
based on the previous digit. If a digit were detected wrong, the error would be tend to propagate.<br />
Differeantial coding eliminates this problem.
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