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:
Nov. 13, 2012
Filed:
Feb. 11, 2009
Seung-il Jeong, Yongin-si, KR;
Byung-wook Kim, Yongin-si, KR;
Seung-Il Jeong, Yongin-si, KR;
Byung-Wook Kim, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A predistortion apparatus of a Digital Pre-Distortion (DPD) power amplifier in a wireless communication system is provided. A method for predistorting an input signal at the predistortion apparatus of the DPD power amplifier includes dividing one or more bits constituting the input signal into upper bits and lower bits; generating two successive address values using the upper bits; generating distortion values of the upper bits corresponding to the address values; calculating a distortion value of the lower bits; and calculating a distortion signal value corresponding to the input signal using the distortion values of the upper bits and the distortion bit of the lower bits. Hence, the time taken to update the LUT can be shortened, the cost can be lowered by the reduced memory capacity, and the power consumption can be decreased.