Predistortion apparatus, system, and method

Details Predistortion apparatus, system, and method Predistortion apparatus, system, and method

2009-06-16

2010-10-12

Nguyen, Patricia (Department: 2817)

Amplifiers

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

C330S107000, C330S278000

Reexamination Certificate

active

07812669

ABSTRACT:
The present invention discloses a predistortion apparatus, a predistortion system and a predistortion method. The predistorter comprises a modular value calculating section, for performing modular arithmetic on an information source input signal inputted from an information source; an orthogonal lookup table value acquiring section, for searching N stored lookup tables orthogonal to one another, finding out corresponding output of each lookup table in accordance with the modular value of the information source input signal, and acquiring N lookup table values, wherein N is an integer greater than 1; a multiplying section, for multiplying the N lookup table values acquired by the orthogonal lookup table value acquiring section with N amplitude adjustment factors to obtain N amplitude adjustment values, and multiplying the N lookup table values with N phase adjustment factors to obtain N phase adjustment values; and a summating section, for summating the N amplitude adjustment values to obtain an amplitude predistortion value, and summating the N phase adjustment values to obtain a phase predistortion value.

REFERENCES:
patent: 5959500 (1999-09-01), Garrido
patent: 6240278 (2001-05-01), Midya et al.
patent: 6600792 (2003-07-01), Antonio et al.
patent: 6731168 (2004-05-01), Hedberg et al.
patent: 6907025 (2005-06-01), Demir et al.
patent: 6934341 (2005-08-01), Sahlman
patent: 7613251 (2009-11-01), Shako et al.
patent: 2005/0195030 (2005-09-01), Okazaki et al.

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