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. 03, 2012
Filed:
Aug. 11, 2006
Bjoern Jelonnek, Ulm, DE;
Gunter Wolff, Ulm, DE;
Bjoern Jelonnek, Ulm, DE;
Gunter Wolff, Ulm, DE;
Nokia Siemens Networks GmbH & Co. KG, Munich, DE;
Abstract
A method for clipping a baseband input signal filters the complex baseband input signal with a function Hfor forming a filtered first signal. To form a clipped signal in the baseband the filtered first signal is multiplied by a scaling factor. By a signal analysis of the filtered first signal signal overshoots are predicted from which the scaling factor is determined for the baseband clipping. The filter function His calculated as the quotient from a frequency response Hof a transmission filter used one the one hand and from an error frequency response Hon the other hand, with the error frequency response Hbeing determined in such a way that the error spectrally shaped with H, which arises for the limitation of the baseband signal, a frequency-dependent tolerance is not exceeded. Subsequently the clipped signal is filtered with the error frequency response Hfor forming a filtered second signal.