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:
Apr. 03, 2012
Filed:
Dec. 20, 2007
Wan Jong Kim, Coquitlam, CA;
Kyoung Joon Cho, Coquitlam, CA;
Jong Heon Kim, Yongsan-Gu, KR;
Shawn Patrick Stapleton, Burnaby, CA;
Wan Jong Kim, Coquitlam, CA;
Kyoung Joon Cho, Coquitlam, CA;
Jong Heon Kim, Yongsan-Gu, KR;
Shawn Patrick Stapleton, Burnaby, CA;
Dali Systems Co. Ltd., George Town Grand Cayman, KY;
Abstract
An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers, to reduce the computational complexity and numerical instability for desired linearity performance with memory effects compensation for wideband transmitter systems.