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. 13, 2006
Filed:
Jun. 14, 2001
Mikko Huttunen, Espoo, FI;
Mikko Huttunen, Espoo, FI;
Nokia Corporation, Espoo, FI;
Abstract
A method for defining correction parameters used in transmitter linearization executed by a predistortion method and a transmitter comprising: sampling means () for sampling the signal (OUT) coming out of the transmitter, a predistorter () for predistorting the signal to be sent (I_IN, Q_IN) to compensate the nonlinearity of the transmitter, the transmitter also comprising: categorization means () for categorizing into predefined classes signal samples (FB) taken from the signal (OUT) coming out of the transmitter, comparison means () for comparing the signal samples (FB) with the corresponding ideal signal values (REF), and definition means (), responsive to said comparison means (), for defining amplitude and preferably phase correction parameters for each class in question, whereby the predistorter is arranged to use said correction parameters when predistorting the signal being transmitted.