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. 21, 2003
Filed:
May. 26, 1999
Telefonaktiebolaget LM Ericsson(publ), Stockholm, SE;
Abstract
Apparatus and method for reducing the range of a transmission signal comprising a plurality of digitally represented complex communication signals, including means for estimating the magnitude of each of the plurality of complex communication signals, based on the complex components, means for determining at least one scaling factor based on the plurality of determined amplitudes and means for reducing the amplitude of the respective complex signal components. The system is accommodated to operate at very high frequency and may advantageously be provided with a circuit determining the amplitude of each of the complex signals using the CORDIC algorithm. The system may further be provided with means for scaling the magnitude of each of the complex components in a coarse scaling step and a fine scaling step. The system allows to effectively reduce the amplitude of the transmission signal eliminating the need for larger and more expensive amplifiers.