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. 15, 2021
Filed:
Nov. 17, 2017
Nokia Shanghai Bell Co., Ltd., Shanghai, CN;
Nokia Shanghai Bell Co., Ltd., Shanghai, CN;
Abstract
The objective of the present invention is to provide a method and apparatus for reducing PAR of beamforming output signals. A method for reducing PAR of beamforming output signals, wherein input base band data is for N ports and number of beamforming output pipes is M; wherein the method comprises the following steps: building a correlation matrix of the input base band data of the N ports; determining adjusting weight vector for the input data of each port in time domain based on the correlation matrix and wbeing the beamforming weight vector of the total N beams for the k-th output pipe, to minimize the correlation of the input base band data of the N ports; adjusting the phase of the input data of each port in time domain based on the adjusting weight vector before beamforming. The present invention enables a reduction on PAR of the beamforming output signals and then improves LTE and 5G power control performance.