Frequency domain notching with dummy subchannels

Details Frequency domain notching with dummy subchannels Frequency domain notching with dummy subchannels

2007-10-02

2007-10-02

Odom, Curtis (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C455S501000

Reexamination Certificate

active

10651157

ABSTRACT:
System and method for reducing interference to existing devices. A preferred embodiment comprises specifying a frequency range for a set of dummy signals, specifying a clipping function to ensure that the set of dummy signals do not exceed a maximum power constraint, incorporating a least squares solution for computing the set of dummy signals into the clipping function, and iterating the clipping function until a terminating condition is reached. The use of the clipping function limits the magnitude of the dummy signals, to ensure that dummy signals do not exceed a maximum power constraint.

REFERENCES:
patent: 6035000 (2000-03-01), Bingham
patent: 6332042 (2001-12-01), Kondo et al.
patent: 2003/0193970 (2003-10-01), Kim et al.
patent: 2004/0240574 (2004-12-01), Piirainen et al.
“Interim Guidelines for Examination of Patent Applications for Patent Subject Matter Eligibility”.

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