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公开(公告)号：US20220078049A1
公开(公告)日：2022-03-10
申请号：US17489395
申请日：2021-09-29
Applicant: Samsung Electronics Co., Ltd.
Inventor： Bofeng Yuan , Hongbing Cheng , Kee-Bong Song
IPC: H04L25/02 , H04B17/336 , H04B1/7113
Abstract: A method for minimizing a time domain mean square error (MSE) of channel estimation (CE) includes estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels; estimating, by the processor, a noise variance of the RS channels; and determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance for minimizing the MSE of CE.
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公开(公告)号：US11223509B2
公开(公告)日：2022-01-11
申请号：US17070912
申请日：2020-10-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Elina Nayebi , Pranav Dayal , Kee-Bong Song
Abstract: An in-phase and quadrature mismatch compensator for a quadrature transmitter includes a delay element, a complex-valued filter and an adder. The delay element receives an input transmit signal and outputs a delayed transmit signal. The complex-valued filter receives the input transmit signal and outputs a selected part of a filtered output transmit signal. The adder adds the delayed transmit signal and the selected part of the filtered output transmit signal and outputs a pre-compensated transmit signal. In one embodiment, the selected part of the filtered output transmit signal includes the real part of the complex-valued output transmit signal. In another embodiment, the selected part of the filtered output transmit signal includes the imaginary part of the complex-valued output transmit signal. Two transmit real-valued compensators are also disclosed that combine the in-phase and quadrature signals before being filtered.
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公开(公告)号：US11153123B2
公开(公告)日：2021-10-19
申请号：US16688866
申请日：2019-11-19
Applicant: Samsung Electronics Co., Ltd.
Inventor： Bofeng Yuan , Hongbing Cheng , Kee-Bong Song
IPC: H04W4/00 , H04L25/02 , H04B17/336 , H04B1/7113
Abstract: A method for minimizing a time domain mean square error (MSE) of channel estimation (CE) includes estimating, by a processor, a power delay profile (PDP) from a time domain observation of reference signal (RS) channels; estimating, by the processor, a noise variance of the RS channels; and determining, by the processor, a first arrival path (FAP) value and a delay spread estimation (DSE) value based on the estimated PDP and the estimated noise variance for minimizing the MSE of CE.
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公开(公告)号：US10931360B2
公开(公告)日：2021-02-23
申请号：US16750363
申请日：2020-01-23
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyukjoon Kwon , Kee-Bong Song
Abstract: A method and system for selecting a symbol detector are herein provided. A method includes extracting a first set of features for a k-th resource element (RE), where k is an integer greater than one, extracting a second set of features from a first RE to a (k−1)th RE, and selecting a symbol detector for the k-th RE using a reinforcement learning (RL) neural network based on the extracted first set of features and the extracted second set of features.
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公开(公告)号：US10892810B2
公开(公告)日：2021-01-12
申请号：US16735042
申请日：2020-01-06
Applicant: Samsung Electronics Co., Ltd.
Inventor： Qi Zhan , Hongbing Cheng , Kee-Bong Song
IPC: H04B7/06 , H04B7/0456
Abstract: An apparatus and method for dynamically selecting a beamforming codebook and hierarchically generating beamforming codebooks is provided. According to one embodiment, an apparatus includes a channel estimation processor configured to receive a signal using a current beamforming codebook in a current beam sweeping period; a look-up table configured to store a plurality of beamforming codebooks; a state abstraction processor connected between the channel estimation processor and the look-up table, and configured to determine a codebook index based on a current channel condition as a function of the received signal and the current beamforming codebook, and select one of the plurality of beam sweeping codebooks in the look-up table as the beamforming codebook for the next beam sweeping period based on the codebook index.
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Patent Agency Ranking
公开(公告)号：US10862615B2
公开(公告)日：2020-12-08
申请号：US16252004
申请日：2019-01-18
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyukjoon Kwon , Jungwon Lee , Farrokh Etezadi , Kee-Bong Song
IPC: H04L1/00 , H04L25/02 , H04L5/00 , H04B7/06 , H04B17/336 , H04B7/0413
Abstract: A method and system are herein disclosed. The method includes receiving sounding reference signals (SRS) at a massive multiple-input multiple-output (MIMO) base station (BS) from a user equipment (UE), determining, at the BS, beamformers for known channels of the SRS, determining, at the BS, beamformers for unknown channels of the SRS based on the determined beamformers for the known channels, and selecting a modulation and coding scheme (MCS) based on the determined beamformers.
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公开(公告)号：US10805893B2
公开(公告)日：2020-10-13
申请号：US15353274
申请日：2016-11-16
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyukjoon Kwon , Niranjan Nayak Ratnakar , Kee-Bong Song , Jungwon Lee
Abstract: A method and apparatus are provided. The method includes, but is not limited to, receiving a universal synchronization signal (USS) including a universal primary synchronization signal (UPSS) and a universal secondary synchronization signal (USSS), wherein the USS is coded using a mother code which is extended to m resource blocks (RBs) and n orthogonal frequency division multiplexing (OFDM) symbols and a code cover of m RBs and n symbols is applied to the mother code, determining a cell identity based on the USS, determining a frame timing based on the USS, and connecting a user equipment to a network using the cell identity and the frame timing.
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公开(公告)号：US10797739B1
公开(公告)日：2020-10-06
申请号：US16440626
申请日：2019-06-13
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hamed Maleki , Elina Nayebi , Pranav Dayal , Kee-Bong Song
Abstract: A method for providing nonlinear self-interference cancellation of a wireless communication device includes: receiving digital samples of an interfering signal having a first sampling rate and a corrupted victim signal having a second sampling rate; generating a kernel vector based on the interfering signal, wherein the kernel vector has terms of nonlinear self-interference; estimating the nonlinear self-interference of the corrupted victim signal using the terms of the nonlinear self-interference; and providing an estimation of a desired signal by cancelling the nonlinear self-interference from the corrupted victim signal.
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公开(公告)号：US10785079B2
公开(公告)日：2020-09-22
申请号：US16536652
申请日：2019-08-09
Applicant: Samsung Electronics Co., Ltd.
Inventor： Amir Dezfooliyan , Vignesh Sethuraman , Hamed Maleki , Linbo Li , Kee-Bong Song
IPC: H04L27/26
Abstract: A method and apparatus are provided. The method includes receiving a reference signal from a transceiver, estimating a time offset (TO) of the reference signal in the frequency domain based on a spectral phase ramp introduced by the TO, compensating the TO of the reference signal based on the estimated TO in the frequency domain by applying the spectral phase ramp to the received reference signal, and providing a TO compensated signal of the reference signal.
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公开(公告)号：US20200295793A1
公开(公告)日：2020-09-17
申请号：US16440626
申请日：2019-06-13
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hamed Maleki , Elina Nayebi , Pranav Dayal , Kee-Bong Song
Abstract: A method for providing nonlinear self-interference cancellation of a wireless communication device includes: receiving digital samples of an interfering signal having a first sampling rate and a corrupted victim signal having a second sampling rate; generating a kernel vector based on the interfering signal, wherein the kernel vector has terms of nonlinear self-interference; estimating the nonlinear self-interference of the corrupted victim signal using the terms of the nonlinear self-interference; and providing an estimation of a desired signal by cancelling the nonlinear self-interference from the corrupted victim signal.
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