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公开(公告)号：US10057094B2
公开(公告)日：2018-08-21
申请号：US15247535
申请日：2016-08-25
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kee-Bong Song , Shuangquan Wang , Hairuo Zhuang
IPC: H04L25/03 , H04L27/233 , H04L27/22 , H04B1/10
CPC classification number: H04L27/2334 , H04B1/10 , H04L25/0328 , H04L25/03292 , H04L27/22
Abstract: An interference cancellation (IC) processor, a method, a method of manufacturing a semiconductor device, and a method of constructing an integrated circuit are provided. The IC processor includes a plurality of mono interference cancellation (MIC) filter estimation processors; a combined effective channel calculation processor; a combined filter calculation processor; and a combined filter processor, including a first input connected to the output of the combined filter calculation processor, a second input for receiving a signal for setting a length of the combined filter that is connected to a second input of the IC processor, a third input connected to the input of the MIC-BRC processor, and an output for providing a filtered output of a de-rotated GMSK signal that is connected to a second output of the IC processor that provides a filtered output yi of the de-rotated GMSK signal.
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公开(公告)号：US10050813B2
公开(公告)日：2018-08-14
申请号：US15390132
申请日：2016-12-23
Applicant: Samsung Electronics Co., Ltd.
Inventor： Kee-Bong Song , Charles Pandana
Abstract: A method and apparatus are provided. The method includes receiving, by a user equipment (UE), a phase shift keying (PSK) modulated signal from a transceiver, derotating the PSK modulated signal, and equalizing the PSK modulated signal using a maximum likelihood sequence estimator (MLSE) based on a first main tap gain (MTG) look up table (LUT) and a first inter-symbol interference (ISI) LUT corresponding to even time samples and a second MTG LUT and a second ISI LUT corresponding to odd time samples.
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公开(公告)号：US12136960B2
公开(公告)日：2024-11-05
申请号：US17871847
申请日：2022-07-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Elina Nayebi , Pranav Dayal , Kee-Bong Song
Abstract: A method of optimizing at least one IQMC parameter value for an IQMC includes: generating a set of tested IQMC candidate parameter values by performing an iterative method including selecting a first IQMC candidate parameter value for the at least one parameter of the IQMC; determining, using the first IQMC candidate parameter value, a performance metric value that comprises at least one of (i) an image rejection ratio (IRR) value, (ii) a signal-to-interference-plus-noise ratio (SINR) value, or (iii) a signal-to-image ratio (SImR) value; and determining a second IQMC candidate parameter value that is an update to the first IQMC candidate parameter value. The method of optimizing at least one IQMC parameter value for an IQMC further includes determining an IQMC candidate parameter value of the set of tested IQMC candidate parameter values that optimizes the performance metric.
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公开(公告)号：US11882527B2
公开(公告)日：2024-01-23
申请号：US17903901
申请日：2022-09-06
Applicant: Samsung Electronics Co., Ltd.
Inventor： Donghoon Lee , Pranav Dayal , Kee-Bong Song
CPC classification number: H04W52/246 , H04B1/40 , H04B17/103 , H04B17/19
Abstract: A method and a closed-loop antenna impedance tuning (CL-AIT) system are provided. An input reflection coefficient is determined. The input reflection coefficient and a threshold value are compared to determine whether the input reflection coefficient is greater than the threshold value. In response to determining that the input reflection coefficient is greater than the threshold value, an optimal tuner code is determined based on a tuner code search algorithm. The optimal tuner code is applied to configure the CL-AIT system.
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公开(公告)号：US11812391B2
公开(公告)日：2023-11-07
申请号：US17982504
申请日：2022-11-07
Applicant: Samsung Electronics Co., Ltd.
Inventor： Pranav Dayal , Kee-Bong Song , Hou-Shin Chen , Sung-En Chiu , Karthik Nagarajan
Abstract: A method of controlling power in a transmission system may include determining a first transmit power of a first transmit path, determining a second transmit power of a second transmit path, and controlling the first transmit path and the second transmit path based on a combination of the first transmit power and the second transmit power. The combination of the first transmit power and the second transmit power may include a sum of the first transmit power and the second transmit power. Controlling the first transmit path and the second transmit path may include determining a first effective power target for the first transmit path based on the first transmit power and the second transmit power, and determining a second effective power target for the second transmit path based on the first transmit power and the second transmit power.
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Patent Agency Ranking
公开(公告)号：US11804890B2
公开(公告)日：2023-10-31
申请号：US17538290
申请日：2021-11-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yanru Tang , Hongbing Cheng , Kee-Bong Song
IPC: H04B7/08
CPC classification number: H04B7/086
Abstract: A wireless communication device includes: a processing circuit configured to: receive, from an antenna array during a previous period, a first directional electromagnetic signal including beam sweeping reference symbols of a previous beam sweeping period; compute an estimated combined channel; estimate a dominant angle-of-arrival (AoA) of the first directional electromagnetic signal based on the estimated combined channel and a previous beamforming codebook including two or more beamforming vectors corresponding to different AoAs; construct an updated beamforming codebook based on the estimated dominant AoA and one or more remaining AoAs spaced apart from the estimated dominant AoA; receive, at the antenna array during a current period, a second directional electromagnetic signal including data symbols; determine a beamforming vector for data reception of the second directional electromagnetic signal based on the updated beamforming codebook; and detect the data symbols in the second directional electromagnetic signal based on the determined beamforming vector.
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公开(公告)号：US11616563B2
公开(公告)日：2023-03-28
申请号：US16983813
申请日：2020-08-03
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yanru Tang , Hongbing Cheng , Kee-Bong Song
IPC: H04B7/08
Abstract: A wireless communication device includes: a processing circuit configured to: receive, from an antenna array during a previous period, a first directional electromagnetic signal including beam sweeping reference symbols of a previous beam sweeping period; compute an estimated combined channel; estimate a dominant angle-of-arrival (AoA) of the first directional electromagnetic signal based on the estimated combined channel and a previous beamforming codebook including two or more beamforming vectors corresponding to different AoAs; construct an updated beamforming codebook based on the estimated dominant AoA and one or more remaining AoAs spaced apart from the estimated dominant AoA; receive, at the antenna array during a current period, a second directional electromagnetic signal including data symbols; determine a beamforming vector for data reception of the second directional electromagnetic signal based on the updated beamforming codebook; and detect the data symbols in the second directional electromagnetic signal based on the determined beamforming vector.
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公开(公告)号：US11211994B2
公开(公告)日：2021-12-28
申请号：US16989653
申请日：2020-08-10
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yanru Tang , Hongbing Cheng , Kee-Bong Song
Abstract: Compressive sensing (CS) channel recovery using history measurements. Both current and history measurements for AoAs estimation, and only use current measurement for coefficient estimation. The dominant angle of arrival (AoA) is estimated using history and current measurements. In Approach 1, the dominant AoA is invariant and the coefficients are uncorrelated. In Approach 2, the dominant AoA is invariant and the coefficients are fully correlated. The remaining AoAs are estimated. The coefficients corresponding to each estimated dominant AoA are estimated. And the channel is recovered.
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公开(公告)号：US11196477B2
公开(公告)日：2021-12-07
申请号：US16983813
申请日：2020-08-03
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yanru Tang , Hongbing Cheng , Kee-Bong Song
IPC: H04B7/08
Abstract: A wireless communication device includes: a processing circuit configured to: receive, from an antenna array during a previous period, a first directional electromagnetic signal including beam sweeping reference symbols of a previous beam sweeping period; compute an estimated combined channel; estimate a dominant angle-of-arrival (AoA) of the first directional electromagnetic signal based on the estimated combined channel and a previous beamforming codebook including two or more beamforming vectors corresponding to different AoAs; construct an updated beamforming codebook based on the estimated dominant AoA and one or more remaining AoAs spaced apart from the estimated dominant AoA; receive, at the antenna array during a current period, a second directional electromagnetic signal including data symbols; determine a beamforming vector for data reception of the second directional electromagnetic signal based on the updated beamforming codebook; and detect the data symbols in the second directional electromagnetic signal based on the determined beamforming vector.
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公开(公告)号：US11190244B1
公开(公告)日：2021-11-30
申请号：US17031655
申请日：2020-09-24
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yanru Tang , Hongbing Cheng , Qi Zhan , Kee-Bong Song
IPC: H04B7/02 , H04B7/0456
Abstract: Low-complexity methods of calculating a precoding matrix for use in MIMO transmission. In some embodiments, a method of calculating a precoding matrix includes (i) calculating a first portion of a first singular value decomposition, based on a first portion of a channel matrix; (ii) calculating a second portion of a second singular value decomposition, based on a second portion of the channel matrix; (iii) calculating an intermediate matrix, based on: the first portion of the first singular value decomposition and the second portion of the second singular value decomposition; and (iv) calculating a matrix of approximate right singular vectors. The calculating of the matrix of approximate right singular vectors may include calculating a product of factors, the factors including a first factor based on the conjugate transpose of the intermediate matrix, a second factor based on a unitary matrix, and a third factor based on a diagonal matrix.
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