公开(公告)号：US20240259236A1

公开(公告)日：2024-08-01

申请号：US18136863

申请日：2023-04-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Federico PENNA ,  Sili LU ,  Yuansheng CHENG ,  Jang Wook MOON ,  Jung Hyun BAE ,  Dongwoon BAI

IPC: H04L25/02 ,  H04L27/26

CPC classification number: H04L25/024 ,  H04L27/2601

Abstract: A method and system include a symbol processing block to generate log likelihood ratios (LLRs) associated with one or more data symbols. The method and system include a channel estimation (CE) module to receive the LLRs from the symbol processing block, and to process iterative CE (ItCE) for new radio (NR) based at least on reference signals and the LLRs. The CE module can process the ItCE with a granularity of one or more resource blocks (RBs) based at least on pilot resource elements (REs) and virtual pilot REs obtained from the LLRs. The CE module can process the ItCE based at least on a frequency domain orthogonal cover codes (FD-OCC) structure of the reference signals. The reference signals can be demodulation reference signals (DMRS) configured in 5G NR. The CE module can process the ItCE by updating a CE result by adding a quantity that represents a contribution obtained from virtual pilot REs.

公开(公告)号：US20220107381A1

公开(公告)日：2022-04-07

申请号：US17199432

申请日：2021-03-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jang Wook MOON ,  Hongbing CHENG ,  Jungwon LEE

IPC: G01S3/60

Abstract: A system and a method are disclosed for estimating antenna misalignments in a line-of-sight wireless communication system and using the estimated antenna misalignments to form an optimal beam that may provide the best performance based on the channel conditions. A receiver determines a rotational estimate and a translational estimate of the receiver with respect to a transmitter, and sends feedback information to the transmitter that is used to determine an optimal beamforming matrix for LOS communications between the receiver and the transmitter. The feedback information includes estimated rotational angles and an estimated translational distance between the receiver and the transmitter, or includes an offset angle between a first plane of antennas of the receiver and a second plane of antennas of the transmitter, a normal vector of the first plane of antennas and the estimated translational distance. The antennas may be antenna arrays or single-element antennas.