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:
Aug. 09, 2005
Filed:
Dec. 03, 2002
Yoshiaki Doi, Tokyo, JP;
Yoshiaki Doi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A power calculating and amplitude limitation judging portioncalculates the power value x of the digital quadrature baseband signal I, Q from a transmission data generator, and compares the power value x with a power threshold value y set by a threshold value setting portionto judge whether amplitude limitation is needed or not. An amplitude maximum limiting portionsubjects the quadrature baseband signal from the transmission data generatorto the amplitude maximum value limitation based on the judgment result in the power calculating and amplitude limitation judging portion. Thereafter, the digital quadrature baseband signal which has been subjected to the amplitude maximum value limitation by the amplitude maximum value limiting portionis subjected to the distortion compensation using complex multiplication based on the distortion compensation data by a non-linear distortion compensation calculator