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:
Mar. 27, 2007
Filed:
Feb. 24, 2006
Miia Karjalainen, Oulu, FI;
Samu Saarinen, Oulu, FI;
Kauko Heinikoski, Kempele, FI;
Teemu Tolonen, Oulu, FI;
Juha Ylinen, Oulu, FI;
Jani Suonperä, Oulu, FI;
Risto Lehtinen, Mouans-Sartoux, FR;
Miia Karjalainen, Oulu, FI;
Samu Saarinen, Oulu, FI;
Kauko Heinikoski, Kempele, FI;
Teemu Tolonen, Oulu, FI;
Juha Ylinen, Oulu, FI;
Jani Suonperä, Oulu, FI;
Risto Lehtinen, Mouans-Sartoux, FR;
Nokia Corporation, Espoo, FI;
Abstract
A transmitter compensates for the non-linearities within a transmission chain. The transmitter includes, for instance, a first forming device for forming, on the basis of at least one set of signal properties, at least one state expansion vector comprising quantities characterizing a signal. The transmitter includes a modifier for modifying the signal characterizing quantities of at least one state expansion vector with the at least one time-domain compensation parameter vector and with the at least one frequency-domain compensation parameter vector to form a pre-distorted signal. The transmitter includes a second forming device for forming a feedback signal from an output signal of a transmission chain. The transmitter includes an adapter for adapting at least one time-domain compensation parameter vector for adapting at least one frequency-domain compensation parameter vector based on a residual error between a transmit signal and the feedback signal.