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. 02, 2013
Filed:
Jun. 11, 2012
Christian Mazzucco, Milan, IT;
Maurizio Mattivi, Milan, IT;
Sergio Bianchi, Milan, IT;
Francesco Lenoci, Milan, IT;
Christian Mazzucco, Milan, IT;
Maurizio Mattivi, Milan, IT;
Sergio Bianchi, Milan, IT;
Francesco Lenoci, Milan, IT;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
A signal processing apparatus for processing an input signal (x) has an adaptive predistorter, an amplifier and a down-converter. The amplifier is configured to amplify a processed signal (y') to obtain an amplified signal (y″). The down-converter is configured to multiply a version of the processed signal (y′) with a version of the amplified signal (y″), one of the signal versions being phase shifted, to obtain a first down-converted signal (z, z′), and to multiply the processed signal (y′) with the amplified signal (y″) to obtain a second down-converted signal (z, z′). The predistorter is configured to predistort the input signal (x) according to a predistortion characteristic to obtain the processed signal (y′), the predistorter being further configured to adapt the predistortion characteristic based on the first down-converted signal (z, z′) and the second down-converted signal (zz′).