公开(公告)号：US20180183501A1

公开(公告)日：2018-06-28

申请号：US15389608

申请日：2016-12-23

Applicant: Facebook, Inc.

Inventor： Qi Qu ,  Sam Padinjaremannil Alex ,  Ali YAZDAN PANAH ,  Abhishek Tiwari ,  Yan Yan ,  Hongyu Zhou ,  Pratheep Bondalapati

IPC: H04B7/0456 ,  H04L5/00 ,  H01Q1/28

CPC classification number: H04B7/0456 ,  H01Q1/288 ,  H04B7/06 ,  H04B7/08

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, preprocessing, by the transmitter, streams of symbols for each transmitting antenna for transmission based on 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.

公开(公告)号：US20190013845A1

公开(公告)日：2019-01-10

申请号：US16110397

申请日：2018-08-23

Applicant: Facebook, Inc.

Inventor： Qi Qu ,  Sam Padinjaremannil Alex ,  Ali YAZDAN ,  Abhishek Tiwari ,  Yan Yan ,  Hongyu Zhou ,  Pratheep Bondalapati

IPC: H04B7/0456 ,  H01Q1/28 ,  H04B7/06 ,  H04B7/08

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.

公开(公告)号：US10686511B2

公开(公告)日：2020-06-16

申请号：US15995523

申请日：2018-06-01

Applicant: Facebook, Inc.

Inventor： Hongyu Zhou ,  Qi Qu ,  Sam Padinjaremannil Alex

IPC: H04B7/06 ,  H04B7/0408 ,  H04W72/12 ,  H04W72/08 ,  H01Q3/26 ,  H04B1/04 ,  H04W16/10 ,  H04W72/04 ,  H04B1/00 ,  H01Q3/24 ,  H01Q3/46

Abstract: Apparatuses, methods, and systems for simultaneous communication through multiple beams of a wireless node, are disclosed. One apparatus includes a node, that includes a beamforming network, an antenna array, and a controller. The beamforming network operates to receive a plurality of communication signals and generate a plurality of delayed signals. The antenna array generates an antenna pattern that includes a plurality of beams, wherein the plurality of beams is divided into a plurality of groups. The controller operates to control simultaneous communication of the node with a plurality of transceivers, including the node communicating with a first transceiver through a selected beam of a first group of beams and simultaneously the node communicating with another transceiver through a corresponding beam of another group of beams.

公开(公告)号：US20180375550A1

公开(公告)日：2018-12-27

申请号：US15995523

申请日：2018-06-01

Applicant: Facebook, Inc.

Inventor： Hongyu Zhou ,  Qi Qu ,  Sam Padinjaremannil Alex

IPC: H04B7/0408 ,  H04B7/06 ,  H04W72/12

Abstract: Apparatuses, methods, and systems for simultaneous communication through multiple beams of a wireless node, are disclosed. One apparatus includes a node, that includes a beamforming network, an antenna array, and a controller. The beamforming network operatates to receive a plurality of communication signals and generate a plurality of delayed signals. The antenna array generates an antenna pattern that includes a plurality of beams, wherein the plurality of beams are divided into a plurality of groups. The controller operate to control simultaneous communication of the node with a plurality of transceivers, including the node communicating with a first transceiver through a selected beam of a first group of beams and simultaneously the node communicating with another transceiver through a corresponding beam of another group of beams.

公开(公告)号：US10084518B2

公开(公告)日：2018-09-25

申请号：US15389608

申请日：2016-12-23

Applicant: Facebook, Inc.

Inventor： Qi Qu ,  Sam Padinjaremannil Alex ,  Ali Yazdan Panah ,  Abhishek Tiwari ,  Yan Yan ,  Hongyu Zhou ,  Pratheep Bondalapati

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/08 ,  H01Q1/28

CPC classification number: H04B7/0456 ,  H01Q1/288 ,  H01Q21/28 ,  H04B7/06 ,  H04B7/08

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, preprocessing, by the transmitter, streams of symbols for each transmitting antenna for transmission based on 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.