公开(公告)号：US12155429B2

公开(公告)日：2024-11-26

申请号：US17852358

申请日：2022-06-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Qi Zhan ,  Jung Hyun Bae ,  Federico Penna ,  Hyukjoon Kwon ,  Dongwoon Bai

IPC: H04B7/0456 ,  H04B7/06

Abstract: A method may include determining, for a channel, a target component of precoding information, determining at least a part of the precoding information based on the target component and a decompressed component of the precoding information, and sending, from a user equipment, the at least a part of the precoding information. Determining the at least a part of the precoding information may be based on a correlation between the target component and the decompressed component. The at least a part of the precoding information may include a vector of coefficients. The vector of coefficients may include a vector of complex numbers. At least one of the complex numbers may include an amplitude representing a scaling coefficient and a phase representing a rotation coefficient. The target component may include a target matrix. The decompressed component may include a decompressed matrix. The target matrix may include a linear combination coefficients matrix. The precoding information may include a precoding matrix indicator.

公开(公告)号：US12088369B2

公开(公告)日：2024-09-10

申请号：US18091641

申请日：2022-12-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyukjoon Kwon ,  Mohamed Mahmoud ,  Federico Penna ,  Yanlin Zhou ,  Ramy E. Ali

IPC: H04B7/0456 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/0453

CPC classification number: H04B7/0456 ,  H04L5/0023 ,  H04W72/0446 ,  H04W72/0453

Abstract: Methods and apparatus are provided in which channel matrices at time slots are estimated using reference signals received from a base station (BS) at the time slots. A sequence of channel matrices at future time slots are estimated using the estimated channel matrices as input to a neural network (NN) trained based on known sets of past and future channel matrices. A parameter is determined using at least one channel matrix from the sequence of channel matrices.

公开(公告)号：US20200287757A1

公开(公告)日：2020-09-10

申请号：US16884918

申请日：2020-05-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Federico Penna ,  Hongbing Cheng ,  Kee-Bong Song

IPC: H04L25/03 ,  H04L27/26 ,  H04L5/00 ,  H04J13/18 ,  H04J11/00 ,  H04J13/00

Abstract: A receiver circuit for separating a plurality of layers multiplexed in an orthogonal frequency domain multiplexed (OFDM) signal includes: a descrambling sub-circuit configured to descramble a plurality of signals received on non-adjacent subcarriers of the OFDM signal to generate a plurality of descrambled signals; an inverse fast Fourier transform sub-circuit configured to transform the descrambled signals from a frequency domain to a received signal including a plurality of samples in a time domain; and a layer separation sub-circuit configured to separate the layers multiplexed in the received signal by: defining a first time domain sampling window and a second time domain sampling window in accordance with a size of the inverse fast Fourier transform; extracting one or more first layers from the samples in the first time domain sampling window; and extracting one or more second layers from the samples in the second time domain sampling window.

公开(公告)号：US12278717B2

公开(公告)日：2025-04-15

申请号：US18141178

申请日：2023-04-28

Applicant: Samsung Electronics Co., Ltd.

Inventor： Federico Penna ,  Hongbing Cheng

IPC: H04L27/28 ,  H04L25/02

Abstract: A system and a method are disclosed for performing data-aided channel tracking for a subcarrier, including obtaining a reference channel estimate (CE) at a first time instance using a reference signal; determining, based on the obtained reference CE and based on received data symbols, a data-aided CE at a second time instance that is subsequent to the first time instance; and sequentially determining one or more additional data-aided CEs, for one or more time instances subsequent to the second time instance, based on a data-aided CE obtained at a previous time instance and based on the received data symbols.

公开(公告)号：US11909472B2

公开(公告)日：2024-02-20

申请号：US17729457

申请日：2022-04-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Federico Penna ,  Hyukjoon Kwon ,  Dongwoon Bai ,  Jaein Kim ,  Junho Lee ,  Hui Won Je

IPC: H04L5/12 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0632 ,  H04L5/0094

Abstract: The disclosure provides a method of providing implicit channel state information (CSI) feedback from a user equipment (UE). The method includes determining a precoding matrix indicator (PMI) selection decision metric, selecting one of a sub-band (SB) linear combination coefficient (LCC) selection method, a wideband (WB) LCC selection method, or a sub-band group (SBG) LCC selection method, based on the determined PMI selection decision metric, determining, using the selected LCC selection method, PMI indices based on sub-bands configured by a base station, and transmitting the determined PMI indices to the base station.

公开(公告)号：US11283507B2

公开(公告)日：2022-03-22

申请号：US17020562

申请日：2020-09-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hongbing Cheng ,  Federico Penna

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02

Abstract: Methods and systems of obtaining a beamforming matrix, the method comprising inputting PMI feedback from a user equipment (UE), inputting partial channel estimation derived from sounding reference signal (SRS) switching, and composing a precoding matrix using the PMI feedback and partial channel estimation.

公开(公告)号：US11108600B2

公开(公告)日：2021-08-31

申请号：US16884918

申请日：2020-05-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Federico Penna ,  Hongbing Cheng ,  Kee-Bong Song

IPC: H04L25/03 ,  H04L27/26 ,  H04L5/00 ,  H04J13/18 ,  H04J11/00 ,  H04J13/00 ,  H04B7/0452 ,  H04L25/02

Abstract: A receiver circuit for separating a plurality of layers multiplexed in an orthogonal frequency domain multiplexed (OFDM) signal includes: a descrambling sub-circuit configured to descramble a plurality of signals received on non-adjacent subcarriers of the OFDM signal to generate a plurality of descrambled signals; an inverse fast Fourier transform sub-circuit configured to transform the descrambled signals from a frequency domain to a received signal including a plurality of samples in a time domain; and a layer separation sub-circuit configured to separate the layers multiplexed in the received signal by: defining a first time domain sampling window and a second time domain sampling window in accordance with a size of the inverse fast Fourier transform; extracting one or more first layers from the samples in the first time domain sampling window; and extracting one or more second layers from the samples in the second time domain sampling window.

公开(公告)号：US12261667B2

公开(公告)日：2025-03-25

申请号：US17700264

申请日：2022-03-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hongbing Cheng ,  Federico Penna

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02

Abstract: Methods and systems of obtaining a beamforming matrix, the method comprising inputting PMI feedback from a user equipment (UE), inputting partial channel estimation derived from sounding reference signal (SRS) switching, and composing a precoding matrix using the PMI feedback and partial channel estimation.

公开(公告)号：US10700896B2

公开(公告)日：2020-06-30

申请号：US16239441

申请日：2019-01-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Federico Penna ,  Hongbing Cheng ,  Kee-Bong Song

IPC: H04L25/03 ,  H04J13/00 ,  H04L5/00 ,  H04J13/18 ,  H04L27/26 ,  H04J11/00 ,  H04B7/0452

Abstract: A receiver circuit for separating a plurality of layers multiplexed in an orthogonal frequency domain multiplexed (OFDM) signal includes: a descrambling sub-circuit configured to descramble a plurality of signals received on non-adjacent subcarriers of the OFDM signal to generate a plurality of descrambled signals; an inverse fast Fourier transform sub-circuit configured to transform the descrambled signals from a frequency domain to a received signal including a plurality of samples in a time domain; and a layer separation sub-circuit configured to separate the layers multiplexed in the received signal by: defining a first time domain sampling window and a second time domain sampling window in accordance with a size of the inverse fast Fourier transform; extracting one or more first layers from the samples in the first time domain sampling window; and extracting one or more second layers from the samples in the second time domain sampling window.

公开(公告)号：US20200153664A1

公开(公告)日：2020-05-14

申请号：US16239441

申请日：2019-01-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Federico Penna ,  Hongbing Cheng ,  Kee-Bong Song

IPC: H04L25/03 ,  H04L27/26 ,  H04L5/00 ,  H04J13/00 ,  H04J13/18 ,  H04J11/00

Abstract: A receiver circuit for separating a plurality of layers multiplexed in an orthogonal frequency domain multiplexed (OFDM) signal includes: a descrambling sub-circuit configured to descramble a plurality of signals received on non-adjacent subcarriers of the OFDM signal to generate a plurality of descrambled signals; an inverse fast Fourier transform sub-circuit configured to transform the descrambled signals from a frequency domain to a received signal including a plurality of samples in a time domain; and a layer separation sub-circuit configured to separate the layers multiplexed in the received signal by: defining a first time domain sampling window and a second time domain sampling window in accordance with a size of the inverse fast Fourier transform; extracting one or more first layers from the samples in the first time domain sampling window; and extracting one or more second layers from the samples in the second time domain sampling window.