公开(公告)号：US20210281303A1

公开(公告)日：2021-09-09

申请号：US17188135

申请日：2021-03-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eun Sung JEON ,  Wook Bong LEE ,  Min Ki AHN ,  Sung Soo KIM ,  Joon Suk KIM

IPC: H04B7/06

Abstract: A beam transmitting device improves performance of a communication channel. The beam transmitting device includes a controller configured to transmit a null data packet (NDP) and receive channel information; and a smoothing circuit configured to smooth a plurality of beamforming vectors in the channel information. The smoothing circuit includes a weight calculator configured to calculate a common phase factor using two adjacent beamforming vectors among the plurality of beamforming vectors, and a moving average filter configured to perform the smoothing using the common phase factor.

公开(公告)号：US20200007204A1

公开(公告)日：2020-01-02

申请号：US16233628

申请日：2018-12-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eun Sung JEON ,  Min Ki AHN ,  Wook Bong LEE ,  Sung Soo KIM ,  Joon Suk KIM

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0417 ,  H04L1/00 ,  H04L5/00

Abstract: A method for wireless communications includes: receiving a sounding packet from an access point; determining a rank of a channel matrix corresponding to a communications channel; and when the rank of the channel matrix is a full rank: selecting at least one of a plurality of pieces of codebook information previously stored in a memory, as beamforming information, transmitting the beamforming information to the access point, and applying channel smoothing to a communications channel provided by the access point.