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. 01, 2025
Filed:
Dec. 03, 2021
Nokia Solutions and Networks Oy, Espoo, FI;
Sivarama Venkatesan, West Orange, NJ (US);
Jaakko Eino Ilmari Vihriälä, Oulu, FI;
Olli Juhani Piirainen, Oulu, FI;
Markus Myllylä, Oulu, FI;
Nokia Solutions and Networks Oy, Espoo, FI;
Abstract
This specification relates to systems and methods for determining eigenvalues and eigenvectors of a covariance matrix, for example for use in eigen-beamforming in MIMO systems. According to a first aspect of this specification, there is describes a method comprising: receiving an input covariance matrix; and determining one or more eigenvalues and/or eigenvectors of the matrix iteratively using gradient ascent, wherein each iteration of the gradient ascent has a step size, μ, that maximises a Rayleigh quotient along the gradient.