Abstract
A PSK signal is received and digitized in a limiter (26) to substantially remove the signals amplitude characteristics. A phase detector (44) receives the digital data and based upon transitions in the data between high and low states provides phase estimates. The phase estimates are converted by a data decoder (50) into binary data representing the symbols transmitted to form the PSK signal. A number of overlapping windows of digital data are used to determine phase estimates. A unique word detector (52) receives binary data from the data decoder (50) and using a correlation technique identifies one set of windows which substantially maximizes synchronization of the demodulator with the received PSK signal. After the synchronizing window has been identified an automatic frequency controller (46) monitors any frequency drift of the PSK signal and corrects the phase estimates.
A PSK signal is received and digitized in a limiter (26) to substantially remove the signals amplitude characteristics. A phase detector (44) receives the digital data and based upon transitions in the data between high and low states provides phase estimates. The phase estimates are converted by a data decoder (50) into binary data representing the symbols transmitted to form the PSK signal. A number of overlapping windows of digital data are used to determine phase estimates. A unique word detector (52) receives binary data from the data decoder (50) and using a correlation technique identifies one set of windows which substantially maximizes synchronization of the demodulator with the received PSK signal. After the synchronizing window has been identified an automatic frequency controller (46) monitors any frequency drift of the PSK signal and corrects the phase estimates.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 3G | 08/04/2007 | ISLD-200704-002 | BROADCOM CORP | No | Family Member | ||||
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| US5524127A | 3G | 08/04/2007 | ISLD-200704-002 | BROADCOM CORP | Yes | Basis Patent | ||||
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Technologies
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.