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公开(公告)号：US11695614B2
公开(公告)日：2023-07-04
申请号：US17064598
申请日：2020-10-06
Applicant: Samsung Electronics Co., Ltd.
Inventor： Elina Nayebi , Pranav Dayal , Kee-Bong Song , Siu-Chuang Ivan Lu , Sang Won Son
IPC: H04L27/36 , H04L27/38 , H04L27/148 , H04L27/26 , H04L27/20
CPC classification number: H04L27/364 , H04L27/148 , H04L27/2003 , H04L27/2695 , H04L27/3863
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：US11595239B2
公开(公告)日：2023-02-28
申请号：US17572614
申请日：2022-01-10
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：US10805125B2
公开(公告)日：2020-10-13
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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14.发明授权公开(公告)号：US10341066B2
公开(公告)日：2019-07-02
申请号：US15880419
申请日：2018-01-25
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hamed Maleki , Pranav Dayal , Kee-Bong Song
Abstract: A system and method for transmitting an orthogonal frequency-division multiplexed signal with a group distributed phase tracking reference signal subcarrier structure, and for estimating, and compensating for, both common phase error, and inter-carrier interference.
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公开(公告)号：US11540230B2
公开(公告)日：2022-12-27
申请号：US16936418
申请日：2020-07-22
Applicant: Samsung Electronics Co., Ltd.
Inventor： Hamed Maleki , Gennady Feygin , Pranav Dayal , Kee-Bong Song
Abstract: According to one general aspect, an apparatus may include a pre-transmission circuit configured to encode a data signal for communication. The apparatus may include a peak-to-average-power ratio (PAPR) controlling circuit configured to set a power level for a level-adjusted data signal. In some embodiments, the PAPR circuit may be configured to set the power level by employing a multi-loop, multi-phase technique, wherein an inner loop employs multiple phases to constrain the PAPR and reduce at least one power-related error condition, and wherein an outer loop updates the power level. The apparatus may include a transmitter circuit configured to transmit the level-adjusted data signal.
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Patent Agency Ranking
公开(公告)号：US11496969B2
公开(公告)日：2022-11-08
申请号：US17222979
申请日：2021-04-05
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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公开(公告)号：US11438850B2
公开(公告)日：2022-09-06
申请号：US17097548
申请日：2020-11-13
Applicant: Samsung Electronics Co., Ltd.
Inventor： Donghoon Lee , Pranav Dayal , Kee-Bong Song
Abstract: According to an embodiment, a method in a closed-loop antenna impedance tuning (CL-AIT) system is provided. The method includes determining whether a transmitted power is above a pre-determined threshold, when the transmitted power is above the pre-determined threshold, determining a bypass input reflection coefficient, determining whether the bypass input reflection coefficient is greater than a bypass threshold, and when the bypass input reflection coefficient is greater than the bypass threshold, determining an optimal tuner code based on a tuner code search algorithm.
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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：US11184206B2
公开(公告)日：2021-11-23
申请号：US16842019
申请日：2020-04-07
Applicant: Samsung Electronics Co., Ltd.
Inventor： Gennady Feygin , Pranav Dayal , Jungwon Lee
Abstract: An apparatus includes a first mixer performing first mixing of an input signal with a digital carrier which rotates the input signal such that one end of a target bandwidth in the input signal is aligned with an edge of a first bandpass filter that performs a first filtering on the first mixed input signal; a second mixer performing a second mixing of the first filtered input signal with a digital carrier which rotates the first filtered input signal such that the opposite end of the target bandwidth is aligned with an edge of a passband of a second bandpass filter that performs a second filtering on the second mixed input signal; and a third mixer performing a third mixing on the second filtered input signal which rotates the second filtered input signal such that the target bandwidth returns to the target bandwidth prior to the first mixing.
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公开(公告)号：US10917122B2
公开(公告)日：2021-02-09
申请号：US16656971
申请日：2019-10-18
Applicant: Samsung Electronics Co., Ltd.
Inventor： Liangbin Li , Pranav Dayal , Jungwon Lee , Gennady Feygin
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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