System and a method for signal processing

Details System and a method for signal processing System and a method for signal processing

2011-05-24

2011-05-24

Nguyen, Hieu P (Department: 2817)

Amplifiers

Hum or noise or distortion bucking introduced into signal...

C375S296000

Reexamination Certificate

active

07948310

ABSTRACT:
A system for processing an input signal, the system including: (a) a hardware memory module configured to store a lookup table; and (b) a signal processing module, configured to process the input signal to provide a second signal, and to transmit the second signal to a power amplifier that is characterized by non-linearity and which is adapted to amplify the second signal to provide an amplified signal; wherein the signal processing module is configured to process the input signal in response to at least one filtering parameter to provide the second signal so as to at least partly compensate for the non-linearity of the amplifier; wherein the at least one filtering parameter is retrieved from the lookup table using a first, a second, and a third lookup table indexes, wherein the first index is responsive to a magnitude of the input signal at a first moment, the second index is responsive to a magnitude of the input signal at a second moment, and the third index is responsive to phases of the input signal at the first and the second moments.

REFERENCES:
patent: 7333559 (2008-02-01), Song et al.
patent: 7479828 (2009-01-01), Benedict

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