公开(公告)号：US11245455B2

公开(公告)日：2022-02-08

申请号：US17025389

申请日：2020-09-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eunsung Jeon ,  Minki Ahn ,  Sungsoo Kim ,  Joonsuk Kim ,  Jinyong Lee

IPC: H04B7/06 ,  H04L25/02

Abstract: A method of operating a wireless communication apparatus configured to support adaptive beamforming of a base station, the method including receiving a sounding packet from the base station through a plurality of sub-carriers, generating first channel information corresponding to first sub-carriers among the plurality of sub-carriers based on the sounding packet, performing an interpolation operation using the first channel information to generate second channel information corresponding to second sub-carriers among the plurality of sub-carriers, generating first beamforming feedback including the first channel information and the second channel information, and transmitting the first beamforming feedback to the base station.

公开(公告)号：US10979122B2

公开(公告)日：2021-04-13

申请号：US16825185

申请日：2020-03-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eunsung Jeon ,  Wookbong Lee ,  Sungsoo Kim ,  Joonsuk Kim ,  Minki Ahn

IPC: H04B7/06 ,  H04B17/336 ,  H04W16/28

Abstract: A method of operating a wireless communication apparatus, the method comprising: estimating a first channel using a sounding packet received from a base station to obtain an estimated first channel, the sounding packet including a plurality of first streams, generating a diagonal matrix and a beam steering matrix by performing singular value decomposition (SVD) on the estimated first channel, generating state information of a plurality of second channels respectively corresponding to a plurality of second streams generated by applying the beam steering matrix to the plurality of first streams using the diagonal matrix, and transmitting beamforming feedback based on the state information to the base station.

公开(公告)号：US20200091970A1

公开(公告)日：2020-03-19

申请号：US16189156

申请日：2018-11-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wook Bong Lee ,  Tianyu Wu ,  Eunsung Jeon ,  Sungsoo Kim

IPC: H04B7/0417 ,  H04B7/06 ,  H04B17/336

Abstract: A method in a wireless station in communication with an access point over a communication channel includes receiving a channel estimation matrix; determining a beamforming matrix using the channel estimation matrix, the beamforming matrix being generated for a plurality of down-sampled feedback indices; the beamforming matrix including beamforming weights for one or more antennas associated with the access point, each beamforming weight being a complex value including an amplitude and a phase; setting the phase of the beamforming weight for a last antenna associated with the last feedback index of the beamforming matrix to zero and rotating the phase of each beamforming weight for each of the other antennas; performing smoothing of the beamforming matrix for each feedback index by normalizing each column vector of the beamforming matrix; compressing the smoothed beamforming matrix; and providing the smoothed beamforming matrix as output.