Method and apparatus for interference mitigation by removing...

Details Method and apparatus for interference mitigation by removing... Method and apparatus for interference mitigation by removing...

2011-08-16

2011-08-16

Le, Lana N (Department: 2618)

Telecommunications

Transmitter

Noise or interference elimination

C455S296000, C455S302000

Reexamination Certificate

active

08000660

ABSTRACT:
Elimination of intermodulation interference in a wireless communication system by removing a portion of the spectrum of transmitted signals. According to a received indication of an occurrence of intermodulation interference experienced by a narrowband receiver, mappings are performed between the predetermined narrowband channel frequency on which the narrowband receiver operates and the occupied channel frequencies of at least one broadband transmit signal. Narrowband candidate frequency ranges that linearly combine into frequencies that overlap the predetermined narrowband channel frequency are determined based on the mappings. The narrowband candidate frequency ranges that potentially contribute to the intermodulation interference are then selectively filtered by at least one notch filter until the intermodulation interference is substantially eliminated.

REFERENCES:
patent: 7734311 (2010-06-01), Satou
patent: 2005/0032485 (2005-02-01), Bachman et al.

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