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    SYSTEMS AND METHODS FOR TIME DOMAIN LAYER SEPARATION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING-BASED RECEIVERS
    91.
    发明申请
    SYSTEMS AND METHODS FOR TIME DOMAIN LAYER SEPARATION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING-BASED RECEIVERS 审中-公开

    公开(公告)号：US20200287757A1

    公开(公告)日：2020-09-10

    申请号：US16884918

    申请日：2020-05-27

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Federico Penna ,  Hongbing Cheng ,  Kee-Bong Song

    IPC: H04L25/03 ,  H04L27/26 ,  H04L5/00 ,  H04J13/18 ,  H04J11/00 ,  H04J13/00

    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.

    Time-domain IQ mismatch compensator with frequency-domain observations
    92.
    发明授权
    Time-domain IQ mismatch compensator with frequency-domain observations 有权

    公开(公告)号：US10749555B2

    公开(公告)日：2020-08-18

    申请号：US16243710

    申请日：2019-01-09

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Elina Nayebi ,  Pranav Dayal ,  Kee-Bong Song

    IPC: H04B1/10 ,  H04L27/26

    Abstract: A system, method, and electronic device for compensating in-phase (I) and quadrature (Q) mismatch (IQMM) are herein disclosed. The system includes an IQ mismatch compensator (IQMC) configured to compensate for IQMM between a time-domain I signal and a time-domain Q signal using filter weight coefficients, and output a compensated I signal and a compensated Q signal, a fast Fourier transformation (FFT) circuit configured to perform an FFT on the compensated I signal and the compensated Q signal to a frequency-domain compensated signal, and a coefficient updater configured to update the filter weight coefficients based on a frequency-domain observation of the frequency-domain compensated signal.

    SYSTEM AND METHOD FOR GENERATING CODEBOOK FOR ANALOG BEAMFORMING
    95.
    发明申请
    SYSTEM AND METHOD FOR GENERATING CODEBOOK FOR ANALOG BEAMFORMING 审中-公开

    公开(公告)号：US20200136694A1

    公开(公告)日：2020-04-30

    申请号：US16354024

    申请日：2019-03-14

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Mehdi Ganji ,  Hongbing Cheng ,  Kee-Bong Song ,  Qi Zhan

    IPC: H04B7/0456 ,  H04B7/06

    Abstract: A method of designing a codebook for analog beamforming. In some embodiments, the method includes: generating a plurality of training points, based on a predefined distribution, each training point being a channel vector; generating, for each of a plurality of codewords, a respective initial value; assigning, in a first assignment operation, each of the training points to a respective desired codeword, the desired codeword maximizing a metric function of a beamforming gain for the training point over the codewords; updating, in a first updating operation, each of the codewords according to the training points assigned to it; and determining whether convergence is achieved; and in response to determining that convergence is achieved, determining a final codebook.

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