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公开(公告)号：US11646931B2
公开(公告)日：2023-05-09
申请号：US17539192
申请日：2021-11-30
Applicant: Samsung Electronics Co., Ltd.
Inventor： Elina Nayebi , Pranav Dayal , Kee-Bong Song
CPC classification number: H04L27/364 , H03F1/3247 , H04B1/0475 , H04L27/3863
Abstract: A method of pre-compensating for transmitter in-phase (I) and quadrature (Q) mismatch (IQMM) may include sending a signal through an up-converter of a transmit path to provide an up-converted signal, determining the up-converted signal, determining one or more IQMM parameters for the transmit path based on the determined up-converted signal, and determining one or more pre-compensation parameters for the transmit path based on the one or more IQMM parameters for the transmit path. In some embodiments, the up-converted signal may be determined through a receive feedback path. In some embodiments, the up-converted signal may be determined through an envelope detector.
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42.发明申请公开(公告)号：US20220337455A1
公开(公告)日：2022-10-20
申请号：US17694129
申请日：2022-03-14
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hyukjoon Kwon , Kee-Bong Song , Nitin Jonathan Myers , Yacong Ding
Abstract: Disclosed is an electronic device including a processor and memory, the processor being configured to perform frequency interpolation on a channel estimation at all resource elements (REs) located where a demodulation reference signal is transmitted, perform time interpolation on a frequency domain interpolated channel obtained from the frequency interpolation, and calculate an enhanced channel estimation based on channel estimates at REs in a frequency domain and REs in a time domain, the channel estimates being output from the time interpolation.
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公开(公告)号：US20220318598A1
公开(公告)日：2022-10-06
申请号：US17339752
申请日：2021-06-04
Applicant: Samsung Electronics Co., Ltd.
Inventor： Shailesh Chaudhari , Hyukjoon Kwon , Kee-Bong Song
Abstract: A learning-based system and method for interference whitening method. In some embodiments, the method includes receiving a signal; extracting a first set of features from the signal; making a first selection, by a first neural network, based on the first set of features; and selecting a first covariance matrix, from a plurality of covariance matrices, based on the first selection.
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公开(公告)号：US20210359895A1
公开(公告)日：2021-11-18
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：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
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.
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Patent Agency Ranking
公开(公告)号：US20210058273A1
公开(公告)日：2021-02-25
申请号：US16688866
申请日：2019-11-19
Applicant: Samsung Electronics Co., Ltd.
Inventor： Bofeng Yuan , Hongbing Cheng , Kee-Bong Song
IPC: H04L25/02 , H04B1/7113 , H04B17/336
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：US10680684B1
公开(公告)日：2020-06-09
申请号：US16256328
申请日：2019-01-24
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hongbing Cheng , Hyukjoon Kwon , Qi Zhan , Kee-Bong Song
IPC: H04L23/02 , H04B7/0426 , H04B7/06 , H04B7/0456
Abstract: A method and system analog beamforming for a single-connected antenna array is herein disclosed. A method includes estimating analog channels on a per-antenna basis, calculating explicitly an analog beamforming matrix based on the estimated analog channels, and performing analog beamforming based on the calculated analog beamforming matrix.
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公开(公告)号：US20200154382A1
公开(公告)日：2020-05-14
申请号：US16258069
申请日：2019-01-25
Applicant: Samsung Electronics Co., Ltd.
Inventor： Bemini Hennadige Janath PEIRIS , Hongbing Cheng , Kee-Bong Song
Abstract: An apparatus is provided. The apparatus includes a processor configured to receive a synchronization signal (SS) and identify timing of the SS based on a primary spreading signal (PSS) in the SS, identify tentative secondary spreading signals (SSSs) based on the identified timing, and group the tentative SSSs; a register configured to receive the SS; and a memory configured to store the tentative SSSs for each group of the tentative SSSs; wherein the processor is further configured to cross correlate the tentative SSSs, combine cross correlated outputs with weights by group, determine an SSS as the tentative SSS with a maximum combined cross correlation outputs, and determine a cell identification based on the determined SSS.
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49.发明申请公开(公告)号：US20200036562A1
公开(公告)日：2020-01-30
申请号：US16591033
申请日：2019-10-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hamed Maleki , Pranav Dayal , Kee-Bong Song
Abstract: An apparatus and a method are provided in which a processor of a receiving apparatus regenerates time domain samples of an interfering data numerology from frequency domain received signals. The processor performs FFT, with a size corresponding to a desired data numerology, on the regenerated time domain samples to generate an interfering numerology cancellation signal. The processor subtracts the interfering numerology cancellation signal from a frequency domain received signal of the desired data numerology.
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公开(公告)号：US10419248B2
公开(公告)日：2019-09-17
申请号：US15436309
申请日：2017-02-17
Applicant: Samsung Electronics Co., Ltd.
Inventor： Amir Dezfooliyan , Vignesh Sethuraman , Hyukjoon Kwon , Hamed Maleki , Linbo Li , Kee-Bong Song
IPC: H04L5/00 , H04L25/02 , H04L25/03 , H04L27/26 , H04L27/148 , H04L27/233
Abstract: Methods and apparatuses are provided in which a signal is received at a receiver. A processor of the receiver computes frequency offset (FO) inter-carrier interference (ICI) compensation, based on a real matrix part of an approximate ICI matrix and an FO estimated from the received signal. The processor applies the FO ICI compensation to the received signal in a frequency domain to produce an ICI compensated output. The processor applies a phase rotation to the ICI compensated output.
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