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:
Sep. 10, 2019
Filed:
Dec. 07, 2016
University of Southern California, Los Angeles, CA (US);
Alan E. Willner, Los Angeles, CA (US);
Yongxiong Ren, Los Angeles, CA (US);
Long Li, Los Angeles, CA (US);
Guodong Xie, Los Angeles, CA (US);
Yinwen Cao, Los Angeles, CA (US);
Zhe Wang, Los Angeles, CA (US);
Cong Liu, Los Angeles, CA (US);
Asher J. Willner, Los Angeles, CA (US);
UNIVERSITY OF SOUTHERN CALIFORNIA, Los Angeles, CA (US);
Abstract
A system includes a transmitter with multiple transmit devices each having an OAM multiplexer that converts multiple input signals into an OAM beam. Each transmit device outputs a coaxial group of orthogonal OAM beams. The system also includes a receiver that has multiple receive devices each having an OAM demultiplexer that receives the group of OAM beams from a corresponding transmit device. The OAM demultiplexer also converts the coaxial group of mutually orthogonal OAM beams into a plurality of received signals corresponding to input signals represented by the OAM beams. The receiver also includes a MIMO processor that has an equalizer that determines a transfer function corresponding to crosstalk of each of the plurality of received signals. The MIMO processor also reduces the crosstalk of each of the plurality of received signals based on the transfer function and updates the transfer function.