The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2009
Filed:
Jan. 03, 2005
Dong-hyun Kim, Suwon-si, KR;
Dong-won Shin, Suwon-si, KR;
Dong-Hyun Kim, Suwon-si, KR;
Dong-Won Shin, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A polynomial predistortion apparatus and method for compensating for a nonlinear distortion characteristic of a power amplifier is provided. The apparatus and method comprise an adaptation controller for determining polynomial coefficients by calculating an inverse nonlinear distortion characteristic of the power amplifier, and calculating complex predistortion gains for all possible amplitudes of an input signal using the determined polynomial coefficients; and a predistorter for receiving an input signal which is a combination of complex-modulated previous baseband input signal samples and current input signal samples, predistorting the input signal using the complex predistortion gains output from the adaptation controller, and outputting the predistorted input signal to the power amplifier.