Alignment Jitter Accumulation in a Chain of Processing Node Regenerators

Yoshitaka TAKASAKI  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.10   pp.1712-1716
Publication Date: 1990/10/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section PAPER (Special Issue on Communication Theory and Its Applications)
Category: Transport System

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It is shown that significant accumulation of alignment jitter can result if there exists any delay difference between signal and timing paths in respective regenerators in a chain. This phenomenon of extra alignment jitter accumulation is analyzed by using Chapman model. Dependence of accumulation on timing extrator Q and delay difference is predicted through the theoretical analyses. Results of computer simulation are found to be in good agreement with theory. It is also revealed by the simulation that additional accumulation can be entailed, which is explained in terms of jitter fine structures. Methods for alleviating extraaccumulations and desigh considerations for time cross hair budget are also discussed.