Pulse or digital communications – Synchronizers
Patent
1997-11-18
2000-10-17
Chin, Stephen
Pulse or digital communications
Synchronizers
370503, H04L 700
Patent
active
061342831
ABSTRACT:
An improved techniques for synchronizing transmissions and receptions of a data transmission system utilizing time division duplexing is disclosed. The improved synchronization techniques utilize the time-varying nature of the energy of the received data to obtain synchronization. In one embodiment, the improved synchronization technique uses the output signals from a multicarrier modulation unit (FFT unit) and thus provides the ability to avoid frequency tones that are susceptible to RF interference. The improved synchronization techniques can also utilize crosstalk interference levels to obtain synchronization. Remote receivers in the data transmission system are able to synchronize to central transmitters, central receivers in the data transmission system are able to synchronize to remote transmitters, and central transmitters are able to synchronize with one another.
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Bingham John A. C.
Sands Nicholas P.
Amati Communications Corporation
Chin Stephen
Fan Chieh M.
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