公开(公告)号：US20240214244A1

公开(公告)日：2024-06-27

申请号：US18083059

申请日：2022-12-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ziming HE ,  Fei TONG

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/0222 ,  H04L25/0224 ,  H04L27/2657

Abstract: A communication device, including a receiver configured to receive a signal comprising a plurality of training symbols and a data symbol; and at least one processor configured to: select, from among the plurality of training symbols, a first training symbol and a second training symbol based on a first parameter and a second parameter; obtain a first symbol difference corresponding to the first training symbol, and a second symbol difference corresponding to the second training symbol; estimate a carrier frequency offset based on the first symbol difference and the second symbol difference; obtain a compensated data symbol corresponding to the data symbol based on the estimated carrier frequency offset; and demodulate and decode the compensated data symbol to obtain decoded data.

公开(公告)号：US20240380466A1

公开(公告)日：2024-11-14

申请号：US18511528

申请日：2023-11-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ziming HE ,  Fei TONG ,  Paul Nicholas FLETCHER

IPC: H04B7/06

Abstract: A computer-implemented method performed by a first electronic device for reducing a feedback overhead of beamforming in a wireless communication system, includes: transmitting a first data to a second electronic device; transmitting a data packet to the second electronic device; receiving a second data from the second electronic device; extracting a compressed steering matrix from the second data; obtain uncompressed steering matrix by using a decoder part of an autoencoder, based on the extracted compressed steering matrix; and transmitting, to the second electronic device, a third data via a radio signal beamformed based on the obtained uncompressed steering matrix.

公开(公告)号：US20240306005A1

公开(公告)日：2024-09-12

申请号：US18370656

申请日：2023-09-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Ziming HE ,  Fei TONG

IPC: H04W16/28 ,  H04B7/06

CPC classification number: H04W16/28 ,  H04B7/0617 ,  H04W84/12

Abstract: A second apparatus configured to communicate with a first apparatus in a wireless local area network (WLAN), including: a transceiver; and at least one processor configured to: receive, using the transceiver, a null data packet (NDP) from the first apparatus, generate a channel estimate based on the NDP, decompose the channel estimate to obtain a feedback matrix, based on the feedback matrix, obtain beamforming information to be used by the first apparatus to perform beamforming, transmit, using the transceiver, the beamforming information to the first apparatus, and receive, using the transceiver, a data transmission which is beamformed by the first apparatus based on the beamforming information, wherein the beamforming information includes at least one from among: a pair of angle indices which indicate a pair of angle vectors to be used by the first apparatus to beamform the data transmission, and a steering matrix index which indicates a steering matrix to be used by the first apparatus to beamform the data transmission.