公开(公告)号：US20210083919A1

公开(公告)日：2021-03-18

申请号：US16742251

申请日：2020-01-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yacong DING ,  Hyukjoon KWON

IPC: H04L27/26 ,  H04B1/7113 ,  H04L25/02

Abstract: Methods and an apparatus are provided. A first method includes receiving an estimated first arrival path (FAP); processing the estimated FAP; providing a rounding operation on the processed estimated FAP to generate an adjustment value for adjusting a fast Fourier transform (FFT) window; determining a quantization error based on the processed estimated FAP; and summing the quantization error to the processed estimated FAR A second method includes receiving an estimated FAP; determining a weighted average of the estimated FAP; processing the weighted average of the estimated FAP; providing a rounding operation on the processed weighted average of the estimated FAP to generate an adjustment value for adjusting an FFT window; determining a delayed STR adjustment based on the processed weighted average of the estimated FAP in a previous time slot; and summing the delayed STR adjustment to the processed weighted average of the estimated FAP in a current time slot.

公开(公告)号：US20220329329A1

公开(公告)日：2022-10-13

申请号：US17359499

申请日：2021-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yacong DING ,  Hyukjoon KWON

IPC: H04B17/17 ,  G06N3/08 ,  G06N3/04 ,  H04L27/26

Abstract: A method may include generating an estimated time offset based on a reference signal in a communication system, and adjusting a transform window in the communication system based on the estimated time offset, wherein the estimated time offset is generated based on machine learning. Generating the estimated time offset may include applying the machine learning to one or more channel estimates. Generating the estimated time offset may include extracting one or more features from one or more channel estimates, and generating the estimated time offset based on the one or more features. Extracting the one or more features may include determining a correlation between a first channel and a second channel. The correlation may include a frequency domain correlation between the first channel and the second channel. Extracting the one or more features may include extracting a subset of a set of features of the one or more channel estimates.

公开(公告)号：US20230087076A1

公开(公告)日：2023-03-23

申请号：US17991394

申请日：2022-11-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yacong DING ,  Hyukjoon Kwon

IPC: H04L27/26 ,  H04L25/02 ,  H04B1/7113

Abstract: Methods and an apparatus are provided. A method includes generating an intermediate symbol time recovery (STR) adjustment based on a difference between an estimated first arrival path (FAP) and an FAP offset and generating an accumulated STR adjustment based on at least the intermediate STR adjustment and a feedback STR adjustment.

公开(公告)号：US20210314197A1

公开(公告)日：2021-10-07

申请号：US16912543

申请日：2020-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yacong DING ,  Hyukjoon KWON

IPC: H04L25/02 ,  H04L5/00 ,  G06N20/00 ,  G06N5/04

Abstract: A radio receiver includes a channel estimator processing circuit including: a feature extractor configured to extract one or more features from a received signal, the features including a channel correlation estimated based on a reference signal in a current slot, the estimated channel correlation indicating a rate of change of a wireless channel over time; and a Doppler spread estimator configured to estimate a Doppler spread of the wireless channel by supplying the features to one or more Doppler shift predictors trained on training data across a training signal-to-noise ratio (SNR) range and across a training Doppler shift range, each Doppler shift predictor being trained on a portion of the training data corresponding to a different portion of the training data.