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:
May. 05, 2020
Filed:
Aug. 23, 2018
Facebook, Inc., Menlo Park, CA (US);
Qi Qu, Irvine, CA (US);
Sam Padinjaremannil Alex, Dublin, CA (US);
Ali Yazdan, San Francisco, CA (US);
Abhishek Tiwari, Woodland Hills, CA (US);
Yan Yan, Culver City, CA (US);
Hongyu Zhou, Canoga Park, CA (US);
Pratheep Bondalapati, Woodland Hills, CA (US);
Facebook, Inc., Menlo Park, CA (US);
Abstract
Apparatuses, methods, and systems for MIMO inter-stream interference cancellation are disclosed. One method includes determining a channel matrix between a plurality of transmitting antennas of a transmitter and a plurality of receiving antennas of a receiver, determining a plurality of channel propagation delays based on a propagation delay between each of the plurality of transmitting antennas and each of the plurality of receiving antennas, determining differences in the plurality of channel propagation delays, preprocessing, by the transmitter, streams of symbols for each transmitting antenna for transmission based on the differences in the plurality of channel propagation delays and based on the channel matrix, and transmitting, by the transmitter, the preprocessed symbol streams through the plurality of transmitting antennas.