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:
Aug. 10, 2010
Filed:
Nov. 22, 2005
John M. Cioffi, Atherton, CA (US);
Iker Almandoz, Palo Alto, CA (US);
Georgios Ginis, San Francisco, CA (US);
John M. Cioffi, Atherton, CA (US);
Iker Almandoz, Palo Alto, CA (US);
Georgios Ginis, San Francisco, CA (US);
Adaptive Spectrum And Signal Alignment, Inc., Redwood, CA (US);
Abstract
A set of complex rotations are used to implement a unitary 'Q' matrix in which each complex rotation is a set of real rotations, where the minimum number of real rotations to perform the complex rotation is three, and where the minimum number of angles to characterize the real rotations is two. The index-angle sets for each successive rotation can be provided by a complex rotor calculation unit, which may be collocated with the complex rotor computational unit, located in a controller such as a DSL optimizer, or located in any other suitable device or apparatus that has performed the QR factorization upon supplied matrix MIMO transfer functions for the vectored channel.