Symbol synchronizer using modified early/punctual/late gate technique
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 16, 1998
Grant Date -
N/A
app pub date -
Oct 13, 1994
filing date -
Oct 13, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus for synchronizing symbol timing for a QPSK demodulator. A matched filter pair outputs respective 'early-punctual-late' signals. The early and late signals are input to a symbol synchronizing estimator that produces an interpolation control signal used by the filters to synchronize the symbol timing to the sample timing. The punctual signal is output as an information bearing signal representing the received inphase and quadrature signals. The matched filters are interpolating matched filters. The symbol synchronizing estimator normalizes the early and late signals in a manner that allow the demodulator to 'flywheel' over signals having a low signal to noise ratio below a predetermined threshold.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully