Baseband predistortion device and method

Details Baseband predistortion device and method Baseband predistortion device and method

2009-06-29

2010-10-12

Nguyen, Patricia (Department: 2817)

Amplifiers

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

C330S107000, C330S278000

Reexamination Certificate

active

07812670

ABSTRACT:
The present invention discloses a baseband predistorter and baseband predistortion method. The baseband predistorter comprising: an address generator for calculating an address of a phase basic lookup table and an address of an amplitude basic lookup table; a parameter determining unit for determining a phase translational amount, an amplitude translational amount, a phase curvature adjustment amount and an amplitude curvature adjustment amount; a phase translating unit for changing the address in accordance with the phase translational amount; an amplitude translating unit for changing the address in accordance with the amplitude translational amount; a phase basic lookup table searching section for determining a corresponding phase output; an amplitude basic lookup table searching section, for determining a corresponding amplitude output; a phase curvature adjusting section, for adjusting the phase output; and an amplitude curvature adjusting section, for adjusting the amplitude output.

REFERENCES:
patent: 6266517 (2001-07-01), Fitzpatrick et al.
patent: 6882217 (2005-04-01), Mueller
patent: 6985033 (2006-01-01), Shirali et al.
patent: 7068984 (2006-06-01), Mathe et al.
patent: 7362818 (2008-04-01), Smith et al.
patent: 7741906 (2010-06-01), Summerfield

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