Report: Parallel Scrambling Techniques for Digital Multiplexers
DooWhan Choi · AT&T Technical Journal · 1986
Scrambling of a digital bit stream is required in order to reduce interference (by randomizing a bit stream), to provide a high transition rate, and to suppress static pattern-dependent jitter.1,2Two fundamental scrambling techniques, self- and frame-synchronous scrambling, are widely used in transmission systems. Self-synchronous scrambling has an error multiplication effect and may not work properly for consecutive input of zeros and ones.3For a certain periodic input, the scrambled sequence has a periodicity the same as that of the input.1