公开(公告)号：US10574313B2

公开(公告)日：2020-02-25

申请号：US15540129

申请日：2016-04-23

Applicant: Skylark Wireless, LLC

Inventor： Clayton Wells Shepard ,  Evan J. Everett ,  Ashutosh Sabharwal ,  Lin Zhong

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0452

Abstract: Technique for full-duplex transmission in many-antenna multi-user (MU) multiple-input multiple-output (MIMO) systems is presented in this disclosure. An estimate of a self-interference channel between a plurality of transmit antennas and a plurality of receive antennas is first obtained. A precoder for self-interference reduction is generated based on minimizing a self-interference power related to the self-interference channel that is present at the plurality of receive antennas. Transmission data are modified using the precoder by projecting the transmission data onto a defined number of singular vectors of the self-interference channel that correspond to the defined number of smallest singular values of the self-interference channel. Data are received in full-duplex mode via the plurality of receive antennas simultaneously with transmitting the modified transmission data.

公开(公告)号：US10455608B2

公开(公告)日：2019-10-22

申请号：US15539997

申请日：2016-04-23

Applicant: Skylark Wireless, LLC

Inventor： Clayton Wells Shepard ,  Lin Zhong ,  Abeer Javed ,  Hang Yu

IPC: H04W72/14 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/06 ,  H04B7/0417 ,  H04W56/00 ,  H04W68/02 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W48/00

Abstract: Disclosed embodiments include methods for control channel design in many-antenna multi-user (MU) multiple-input multiple-output (MIMO) wireless systems. A beacon comprising an identifier of a many-antenna base station is encoded into a base sequence. A plurality of synchronization sequences is generated based on the encoded base sequence and a set of orthogonal beam sequences. The many-antenna base-station transmits, using a plurality of antennas, the plurality of synchronization sequences in a plurality of beam directions associated with the set of orthogonal beam sequences for synchronization and associated with users without knowledge of channel state information (CSI).

公开(公告)号：US20180006690A1

公开(公告)日：2018-01-04

申请号：US15540129

申请日：2016-04-23

Applicant: Skylark Wireless, LLC

Inventor： Clayton Wells Shepard ,  Evan J. Everett ,  Ashutosh Sabharwal ,  Lin Zhong

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0452

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0615 ,  H04B7/0617

Abstract: Technique for full-duplex transmission in many-antenna multi-user (MU) multiple-input multiple-output (MIMO) systems is presented in this disclosure. An estimate of a self-interference channel between a plurality of transmit antennas and a plurality of receive antennas is first obtained. A precoder for self-interference reduction is generated based on minimizing a self-interference power related to the self-interference channel that is present at the plurality of receive antennas. Transmission data are modified using the precoder by projecting the transmission data onto a defined number of singular vectors of the self-interference channel that correspond to the defined number of smallest singular values of the self-interference channel. Data are received in full-duplex mode via the plurality of receive antennas simultaneously with transmitting the modified transmission data.

公开(公告)号：US20180338321A1

公开(公告)日：2018-11-22

申请号：US15539997

申请日：2016-04-23

Applicant: Skylark Wireless, LLC

Inventor： Clayton Wells Shepard ,  Lin Zhong ,  Abeer Javed ,  Hang Yu

IPC: H04W72/14 ,  H04W56/00 ,  H04B7/0452 ,  H04B7/0417 ,  H04W72/04 ,  H04W68/02

CPC classification number: H04W72/14 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/046 ,  H04B7/0617 ,  H04B7/0695 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2692 ,  H04W48/00 ,  H04W56/001 ,  H04W68/02 ,  H04W72/0446

Abstract: Disclosed embodiments include methods for control channel design in many-antenna multi-user (MU) multiple-input multiple-output (MIMO) wireless systems. A beacon comprising an identifier of a many-antenna base station is encoded into a base sequence. A plurality of synchronization sequences is generated based on the encoded base sequence and a set of orthogonal beam sequences. The many-antenna base-station transmits, using a plurality of antennas, the plurality of synchronization sequences in a plurality of beam directions associated with the set of orthogonal beam sequences for synchronization and associated with users without knowledge of channel state information (CSI).