Pulse or digital communications – Spread spectrum
Reexamination Certificate
2008-01-01
2008-01-01
Vo, Don N. (Department: 2611)
Pulse or digital communications
Spread spectrum
Reexamination Certificate
active
07315564
ABSTRACT:
A system, method, and computer program product for removing “narrowband” interference from a broader spectrum containing a UWB signal, in a receiver of the UWB signal. The RFI is extracted from a broader spectrum to remove interference from the UWB signal, by employing an impulse response in a radio front-end of the UWB receiver that is matched with an incoming wavelet employed as part of a UWB signal to be received, matching the impulse response to the wavelet and its time-shifted and inverted versions, passing the wavelet unscathed through the receiver, and excising narrowband signals (continuous tones). Exemplary embodiments for the RFI extraction mechanism include a transmission line circuit, an active transmission line circuit, and an adaptable, controllable phase delay circuit.
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Freescale Semiconductor Inc.
Vo Don N.
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