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:
Oct. 26, 2004
Filed:
Apr. 12, 2000
Harri Posti, Oulu, FI;
Nokia Corporation, Espoo, FI;
Abstract
A multi-carrier transmitting apparatus and method is described, wherein a plurality of carrier signals are combined in the digital domain and supplied to a D/A converting means ( ) for converting the combined digital carrier signals into an analog signal to be transmitted. The frequency characteristic of the D/A converting means ( ) is compensated by scaling means ( to ) for pre-scaling individual ones of said plurality of carrier signals before being combined and supplied to D/A converting means ( ). The pre-scaling may be performed by multiplying digital data, representing the carrier signals, by corresponding frequency-dependent digital scaling words. Thereby, the need for signal processing intensive digital filters or non-ideal analog filters can be prevented. In case a digital power control is provided, the scaling word can be combined with a power control word.