System and method for digital interference cancellation

Details System and method for digital interference cancellation System and method for digital interference cancellation

2009-05-01

2011-11-08

Choe, Henry (Department: 2817)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S318000

Reexamination Certificate

active

08055235

ABSTRACT:
A system and method for receiving a signal, comprising an input adapted to receive a radio frequency signal having a strong interferer; a signal generator, adapted to produce a representation of the interferer as an analog signal generated based on an oversampled digital representation thereof; and a component adapted to cancel the strong interferer from radio frequency signal based on the generated analog signal to produce a modified radio frequency signal substantially absent the interferer. The system typically has a nonlinear component that either saturates or produces distortion from the strong interferer, which is thereby reduced. The system preferably employs high speed circuits which digitize and process radio frequency signals without analog mixers.

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