Pulse or digital communications – Repeaters – Testing
Patent
1990-10-09
1994-01-18
Kuntz, Curtis
Pulse or digital communications
Repeaters
Testing
375119, H04L 2706
Patent
active
052805018
ABSTRACT:
Bit synchronization is achieved by identifying potential bit sample points and assigning corresponding weight values as a function of signal noise vulnerability. The greater the possibility of error due to signal noise, the smaller the assigned weight value. The bit sample points associated with the largest accumulated weight value are taken as the appropriate data sample points for extracting information from the data signal. For a duobinary signal, zero crossings are identified as potential bit sample points and assigned a weight value corresponding to signal slope thereat. The number of possible bit sample points associated with each actual bit sample point is limited to a finite set by phase locking the carrier signal to the data rate.
REFERENCES:
patent: 3409831 (1968-11-01), Walker
patent: 4370748 (1983-01-01), Janc et al.
patent: 4403333 (1983-09-01), Gupta
Galbi Elmer
Ghebretinsae T.
Kuntz Curtis
Seiko Epson Corp.
Seko Corp.
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