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公开(公告)号：US12224893B2
公开(公告)日：2025-02-11
申请号：US18209473
申请日：2023-06-13
Applicant: Samsung Electronics Co., Ltd.
Inventor： Elina Nayebi , Pranav Dayal , Kee-Bong Song , Siu-Chuang Ivan Lu , Sang Won Son
IPC: H04L27/36 , H04L27/148 , H04L27/20 , H04L27/26 , H04L27/38
Abstract: A method of compensating for IQ mismatch (IQMM) in a transceiver may include sending first and second signals from a transmit path through a loopback path, using a phase shifter to introduce a phase shift in at least one of the first and second signals, to obtain first and second signals received by a receive path, using the first and second signals received by the receive path to obtain joint estimates of transmit and receive IQMM, at least in part, by estimating the phase shift, and compensating for IQMM using the estimates of IQMM. Using the first and second signals received by the receive path to obtain estimates of the IQMM may include processing the first and second signals received by the receive path as a function of one or more frequency-dependent IQMM parameters.
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公开(公告)号：US12028821B2
公开(公告)日：2024-07-02
申请号：US17478622
申请日：2021-09-17
Applicant: Samsung Electronics Co., Ltd.
Inventor： Tiangao Gou , Pranav Dayal , Niranjan Ratnakar , Gennady Feygin , Jungwon Lee
CPC classification number: H04W56/004 , H03D3/009 , H04L27/364 , H03D2200/0045
Abstract: A method for providing IQ mismatch (IQMM) compensation includes: estimating an overall frequency response of a compensation filter by stepping through a frequency range starting at an initial frequency and performing (1) through (3) at each step, a selected frequency at each step being a multiple of a subcarrier frequency of the initial frequency: (1) sending a single tone signal at the selected frequency, (2) determining a first response of a mismatched signal at the selected frequency and a second response of the mismatched signal at an image frequency of the selected frequency, and (3) estimating a frequency response of the compensation filter at the selected frequency based on the first response and the second response; generating time-domain filter taps based on the estimated overall frequency response of the compensation filter; determining a time delay based on the time-domain filter taps; and generating a compensated signal based on the time delay.
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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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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：US20210239819A1
公开(公告)日：2021-08-05
申请号：US16920289
申请日：2020-07-02
Applicant: Samsung Electronics Co., Ltd.
Inventor： Anders Sven Mattsson , Gennady Feygin , Pranav Dayal
Abstract: A system and method for detecting proximity of a user within a particular distance of a radio device is disclosed. The method includes transmitting a signal via a transmitter and antenna of the radio device, receiving a received signal via a receiver and the antenna, processing the received signal for distinguishing a signal reflected from the user from a leaked portion of the transmitted signal, and reducing power of the radio device in response to the processing.
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Patent Agency Ranking
6.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：US09966977B1
公开(公告)日：2018-05-08
申请号：US15402651
申请日：2017-01-10
Applicant: Samsung Electronics Co., Ltd.
Inventor： Liangbin Li , Pranav Dayal , Jungwon Lee , Gennady Feygin
CPC classification number: H04B1/0042 , H04B1/0046 , H04B3/462
Abstract: Apparatuses (and methods of manufacturing same), systems, and methods concerning polyphase digital filters are described. In one aspect, an apparatus is provided, including at least one pair of subfilters, each having symmetric coefficients, and a lattice comprising two adders and feedlines corresponding to each of the at least one pair of subfilters, each having symmetric coefficients. In one aspect, the apparatus is a polyphase finite impulse response (FIR) digital filter, including an interpolator and a decimator, where each of the interpolator and the decimator have at least one pair of subfilters, each having symmetric coefficients, and a lattice comprising two adders and feedlines corresponding to each of the at least one pair of subfilters, each having symmetric coefficients.
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8.发明授权公开(公告)号：US09692556B1
公开(公告)日：2017-06-27
申请号：US15052758
申请日：2016-02-24
Applicant: Samsung Electronics Co., Ltd.
Inventor： Pranav Dayal , Jungwon Lee , Gennady Feygin , Jaeyoung Kim
CPC classification number: H04L1/0054 , H04B1/30 , H04L2025/03636
Abstract: A communication system includes: an inter-device interface configured to receive received signal including communication content; a communication circuit, coupled to the inter-device interface, configured to: determine an in-phase signal-component and a quadrature signal-component based on the received signal, calculate an adjustment value including a first adjustment and a second adjustment based on the in-phase signal-component and the quadrature signal-component according to a maximum-likelihood mechanism, and adjust the received signal based on the adjustment value for reducing an in-phase/quadrature imbalance between the in-phase signal-component and the quadrature signal-component in processing the communication content.
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9.发明公开公开(公告)号：US20240080055A1
公开(公告)日：2024-03-07
申请号：US18180712
申请日：2023-03-08
Applicant: Samsung Electronics Co., Ltd.
Inventor： Panagiotis Skrimponis , Pranav Dayal , Wan Jong Kim
IPC: H04B1/10 , H04B1/7136 , H04W72/0453
CPC classification number: H04B1/1027 , H04B1/7136 , H04W72/0453 , H04B2001/1072 , H04B2001/71365
Abstract: A method, user equipment, and system are disclosed for adjusting a user equipment (UE) configuration based on physical factors at the UE. The method comprises receiving, by a neural network circuit, inputs related to a physical interaction with the UE, the inputs including at least one of a first input value associated with a reflection coefficient of the UE, a second input value associated with a frequency band for transmitting or receiving a signal with the UE, and a third input value associated with a carrier frequency for transmitting or receiving the signal with the UE, outputting output values associated with detecting a use case of the physical interaction or associated with adjusting at least one of an antenna impedance and an antenna aperture of the UE, and adjusting at least one of an impedance tuner circuit and an aperture tuner circuit of the UE based on the output values.
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公开(公告)号：US11870512B2
公开(公告)日：2024-01-09
申请号：US17731251
申请日：2022-04-27
Applicant: Samsung Electronics Co., Ltd.
Inventor： Yanru Tang , Pranav Dayal , Hou-Shin Chen , Pritesh Vora , Tienyu Chang , Siuchuang Ivan Lu , Kee-Bong Song
CPC classification number: H04B7/04 , H03F3/245 , H04B2001/0416
Abstract: A closed-loop power control (CLPC) system is disclosed that includes a first signal path for a first polarization and a second signal path for a second polarization. The first signal path includes a first power amplifier, a first output power detector configured to detect a first output power level of the first power amplifier, and a first processor configured to determine a first analog gain for a first controller and a first gain for a first digital-to-analog converter based on a first accumulated error between the first output power level and a target Effective Isotropically Radiated Power. A second processor is configured to set a first variable gain of a first variable gain amplifier coupled to an input of the first power amplifier. The CLPC can be configured to control the gain of the first signal path separately or as one signal path.
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