Report presents theoretical study of performance of all-digital data-transition-tracking loop (DTTL). Equations derived to analyze effects of few samples per symbol period and of noncommensurate sampling and symbol rates. Noise and frequency response taken into account. Effects upon variance of phase error and on mean time to lose lock quantified through computer simulations. Because of phase ambiguity, digital DTTL performs poorly when number of samples per symbol period is small.
Performance Of Digital Data-Transition-Tracking Loop
NASA Tech Briefs ; 16 , 9
1992-09-01
Miscellaneous
No indication
English
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