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    SYSTEMS, METHODS, AND APPARATUS FOR SYMBOL TIMING RECOVERY BASED ON MACHINE LEARNING
    11.
    发明申请
    SYSTEMS, METHODS, AND APPARATUS FOR SYMBOL TIMING RECOVERY BASED ON MACHINE LEARNING 有权

    公开(公告)号：US20220329329A1

    公开(公告)日：2022-10-13

    申请号：US17359499

    申请日：2021-06-25

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yacong DING ,  Hyukjoon KWON

    IPC: H04B17/17 ,  G06N3/08 ,  G06N3/04 ,  H04L27/26

    Abstract: A method may include generating an estimated time offset based on a reference signal in a communication system, and adjusting a transform window in the communication system based on the estimated time offset, wherein the estimated time offset is generated based on machine learning. Generating the estimated time offset may include applying the machine learning to one or more channel estimates. Generating the estimated time offset may include extracting one or more features from one or more channel estimates, and generating the estimated time offset based on the one or more features. Extracting the one or more features may include determining a correlation between a first channel and a second channel. The correlation may include a frequency domain correlation between the first channel and the second channel. Extracting the one or more features may include extracting a subset of a set of features of the one or more channel estimates.

    SYSTEM AND METHOD FOR BLIND DETECTION OF NUMEROLOGY
    13.
    发明申请
    SYSTEM AND METHOD FOR BLIND DETECTION OF NUMEROLOGY 审中-公开

    公开(公告)号：US20180191462A1

    公开(公告)日：2018-07-05

    申请号：US15454596

    申请日：2017-03-09

    Applicant: Samsung Electronics Co. , Ltd.

    Inventor： Hyukjoon KWON ,  Niranjan Nayak RATNAKAR ,  Jungwon LEE

    IPC: H04L1/00 ,  H04L7/027

    CPC classification number: H04L1/0038 ,  H04L7/0278 ,  H04L27/2602 ,  H04L27/2666 ,  H04L27/2678 ,  H04W88/02

    Abstract: Apparatuses and methods of manufacturing same, systems, and methods for blind detection of a numerology of a received signal are described. In one aspect, a method is provided for a user equipment (UE) to blindly detect the numerology of a received signal. The method includes correlating cyclic prefix (CP) signals in the received signal in the time domain based on a plurality of hypotheses of subcarrier spacing (SCS); measuring power variation of the received signal in the frequency domain based on the plurality of hypotheses of SCS; and combining weighted results of a correlation of the CP signals in the time domain and the measured power variation in the frequency domain to determine a numerology of the received signal for a corresponding hypothesis of SCS of the plurality of hypotheses.

    APPARATUS AND METHOD FOR SYMBOL TIME RECOVERY USING FEEDBACK LOOP
    18.
    发明申请
    APPARATUS AND METHOD FOR SYMBOL TIME RECOVERY USING FEEDBACK LOOP 有权

    公开(公告)号：US20210083919A1

    公开(公告)日：2021-03-18

    申请号：US16742251

    申请日：2020-01-14

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Yacong DING ,  Hyukjoon KWON

    IPC: H04L27/26 ,  H04B1/7113 ,  H04L25/02

    Abstract: Methods and an apparatus are provided. A first method includes receiving an estimated first arrival path (FAP); processing the estimated FAP; providing a rounding operation on the processed estimated FAP to generate an adjustment value for adjusting a fast Fourier transform (FFT) window; determining a quantization error based on the processed estimated FAP; and summing the quantization error to the processed estimated FAR A second method includes receiving an estimated FAP; determining a weighted average of the estimated FAP; processing the weighted average of the estimated FAP; providing a rounding operation on the processed weighted average of the estimated FAP to generate an adjustment value for adjusting an FFT window; determining a delayed STR adjustment based on the processed weighted average of the estimated FAP in a previous time slot; and summing the delayed STR adjustment to the processed weighted average of the estimated FAP in a current time slot.

    NESTED LOOKUP TABLE FOR SYMBOL DETECTION WITH INITIAL CANDIDATE REDUCTION
    20.
    发明申请
    NESTED LOOKUP TABLE FOR SYMBOL DETECTION WITH INITIAL CANDIDATE REDUCTION 审中-公开

    公开(公告)号：US20200374035A1

    公开(公告)日：2020-11-26

    申请号：US16993124

    申请日：2020-08-13

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Farrokh ETEZADI ,  Hyukjoon KWON ,  Jooyeol YANG

    IPC: H04L1/00 ,  H04L1/24

    Abstract: A method of signal demodulation includes receiving, by a signal receiver, a first signal modulated by a symbol corresponding to a point in a constellation; generating, by the signal receiver and on the basis of the first signal, a first initial modulation estimate; identifying, by the signal receiver and on the basis of the first initial modulation estimate, a row or column of an initial candidate lookup table, the row or column corresponding to a region of the constellation; reading, by the signal receiver, from the row or column of the initial candidate lookup table one or more first initial candidate points of the constellation, at least one among the one or more first initial candidate points being more distant, from a center of the region, than a point, in the constellation, not among the one or more first initial candidate points, and demodulating, by the signal receiver and on the basis of the one or more first initial candidate points, the first signal.

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