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:
Dec. 12, 2023
Filed:
Jun. 28, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Satoru Emura, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
The transfer function estimation device includes: a correlation matrix computing unitcomputing a correlation matrix of N frequency domain signals y(f,l); a signal space basis vector computing unitobtaining M vectors v(f), . . . , v(f) from eigenvectors of the correlation matrix from highest in the order of corresponding eigenvalues; and a plural RTF estimation unitdetermining t(f), . . . , t(f) that satisfy the relationship of Expression (1), determining a matrix D(f) that is not a zero matrix and that makes u(f), . . . , u(f) defined by Expression (2) sparse in a time direction, determining c(f), . . . , c(f) that satisfy the relationship of Expression (3), and outputting c(f)/c(f), . . . , c(f)/c(f) as a relative transfer function, where j is an integer of 1 or more and not more than N.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile