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. 03, 2023
Filed:
Aug. 30, 2022
Nec Corporation, Tokyo, JP;
Osaka University, Suita, JP;
The Doshisha, Kyoto, JP;
Takanobu Doi, Tokyo, JP;
Kazushi Muraoka, Tokyo, JP;
Naoto Ishii, Tokyo, JP;
Takumi Takahashi, Osaka, JP;
Shinsuke Ibi, Kyoto, JP;
Abstract
A wireless receiving apparatus generates an N'×B′ weight matrix W whose columns are orthogonal to each other by decomposing an estimated N′×M′ channel matrix into the N′×B′ weight matrix W and a B′×M′ matrix containing two or more non-zero matrix elements in each column, where B′ is an integer less than or equal to N′-1 and greater than or equal to M′. Alternatively, the wireless receiving apparatus generates a combination of an N′×B′ sub-weight matrix Wand at least one second sub-weight matrix, where the product of the sub-weight matrix Wwith the at least one second sub-weight matrix is equal to the weight matrix W. The wireless receiving apparatus performs receive beamforming on received signals of N′ receiving antennas using the weight matrix W or the sub-weight matrix W. The wireless receiving apparatus then performs a BP algorithm using receive-beamformed signals.