Narrow-band detections of a received signal

Details Narrow-band detections of a received signal Narrow-band detections of a received signal

2006-06-19

2010-06-08

Tran, Tuan A (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

C455S339000, C455S334000, C455S192100, C455S192200, C455S296000, C375S229000, C375S232000, C375S343000, C375S344000, C375S346000, C375S350000

Reexamination Certificate

active

07734274

ABSTRACT:
The frequency of an RF signal to be transmitted is modulated at the transmitting unit, and the modulation information is used by the receiving unit to filter out any unwanted noise. The modulation information may be used to retrieve associated filter coefficients that are used by the receiver to filter out the noise. Accordingly, for each transmit frequency, a multitude of filter coefficients stored in a memory are applied by the receiver to filter out the noise. The filtering operation may be performed after the received signal is downconverted from an RF to an audio signal.

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International Search Report PCT/US06/23709, Apr. 2005.

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