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    DISTRIBUTED ANTENNA SYSTEM INCLUDING CREST FACTOR REDUCTION MODULE DISPOSED AT OPTIMUM POSITION
    1.
    发明申请
    DISTRIBUTED ANTENNA SYSTEM INCLUDING CREST FACTOR REDUCTION MODULE DISPOSED AT OPTIMUM POSITION 审中-公开

    公开(公告)号：US20180198493A1

    公开(公告)日：2018-07-12

    申请号：US15911736

    申请日：2018-03-05

    Applicant: SOLiD, INC.

    Inventor： Hyoungho KIM ,  Doyoon KIM ,  Kwangnam SEO

    IPC: H04B7/022 ,  H04L27/26

    CPC classification number: H04B7/022 ,  H04L27/2614 ,  H04L27/2624

    Abstract: A distributed antenna system includes a plurality of head-end units for each receiving mobile communication signals from at least one corresponding base station, a hub unit communicatively coupled to the plurality of head-end units, and a plurality of remote units communicatively coupled to the hub unit, wherein the hub unit configured to distribute the mobile communication signals received from each of the plurality of head-end units to the plurality of remote units, wherein each of the plurality of remote units is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub unit includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end units, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.

    PEAK CANCELLATION-CREST FACTOR REDUCTION DEVICE, PEAK-TO-AVERAGE POWER RATIO REDUCTION METHOD, AND PEAK VALUE DETERMINATION DEVICE
    2.
    发明申请
    PEAK CANCELLATION-CREST FACTOR REDUCTION DEVICE, PEAK-TO-AVERAGE POWER RATIO REDUCTION METHOD, AND PEAK VALUE DETERMINATION DEVICE 审中-公开

    公开(公告)号：US20170187550A1

    公开(公告)日：2017-06-29

    申请号：US15459774

    申请日：2017-03-15

    Applicant: SOLiD, INC.

    Inventor： Doyoon KIM ,  Kwangnam SEO

    IPC: H04L25/02 ,  H04L27/26

    CPC classification number: H04L25/0262 ,  H04L25/02 ,  H04L27/2623

    Abstract: A peak cancellation-crest factor reduction (PC-CFR) device includes a clipping unit configured to output a clipping error signal by clipping amplitude values of a first baseband complex signal based on a predetermined threshold value; a peak value determination unit configured to receive the clipping error signal, and determine a first amplitude value as a peak value when the first amplitude value is greater than a second amplitude value input before the first amplitude value and a third amplitude value input after the first amplitude value among amplitude values of the clipping error signal; a cancellation pulse generator (CPG) allocation unit configured to allocate the peak value to a CPG; and a subtractor configured to subtract a cancellation pulse generated from the CPG from the first baseband complex signal and output a second baseband complex signal with a reduced peak-to-average power ratio (PAPR).

    NODE UNIT OF DISTRIBUTED ANTENNA SYSTEM
    4.
    发明申请
    NODE UNIT OF DISTRIBUTED ANTENNA SYSTEM 审中-公开

    公开(公告)号：US20170118768A1

    公开(公告)日：2017-04-27

    申请号：US15401241

    申请日：2017-01-09

    Applicant: SOLID, INC.

    Inventor： Kwangnam SEO ,  Hyoungho KIM ,  Doyoon KIM

    IPC: H04W72/12 ,  H04B7/04

    CPC classification number: H04B7/04 ,  H04B1/40 ,  H04W88/085

    Abstract: The inventive concept relates to a distributed antenna system (DAS), and more particularly, to an uplink signal transmission operation of each of node units constituting a DAS. A node unit of a DAS includes a multiplexer configured to generate a single uplink signal by selectively outputting any one of m uplink signals received from m lower node units at an interval of a predetermined output time, where m is a positive integer greater than 1, and a down-sampler configured to output a transmission uplink signal by converting a sampling rate of the single uplink signal to correspond to a sampling rate of any one of the m uplink signals. Accordingly, it is possible to provide a DAS capable of processing and outputting, as one signal, uplink signals received from a plurality of remote units, without any error.

    DISTRIBUTED ANTENNA SYSTEM INCLUDING CREST FACTOR REDUCTION MODULE DISPOSED AT OPTIMUM POSITION
    6.
    发明申请
    DISTRIBUTED ANTENNA SYSTEM INCLUDING CREST FACTOR REDUCTION MODULE DISPOSED AT OPTIMUM POSITION 有权
    分布式天线系统，包括在最佳位置处理的故障因子减少模块

    公开(公告)号：US20160211891A1

    公开(公告)日：2016-07-21

    申请号：US15084749

    申请日：2016-03-30

    Applicant: SOLiD, INC.

    Inventor： Hyoungho KIM ,  Doyoon KIM ,  Kwangnam SEO

    IPC: H04B7/02 ,  H04L27/26

    CPC classification number: H04B7/022 ,  H04L27/2614 ,  H04L27/2624

    Abstract: A distributed antenna system includes a plurality of head-end units for each receiving mobile communication signals from at least one corresponding base station, a hub unit communicatively coupled to the plurality of head-end units, and a plurality of remote units communicatively coupled to the hub unit, wherein the hub unit configured to distribute the mobile communication signals received from each of the plurality of head-end units to the plurality of remote units, wherein each of the plurality of remote units is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub unit includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end units, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.

    Abstract translation: 分布式天线系统包括多个头端单元，用于各自接收来自至少一个对应的基站的移动通信信号，通信地耦合到多个头端单元的集线器单元，以及多个远程单元，其通信地耦合到 集线器单元，其中所述集线器单元被配置为将从所述多个头端单元中的每一个接收的移动通信信号分配给所述多个远程单元，其中所述多个远程单元中的每一个被远程布置以发送所述分布式移动通信信号 到服务覆盖的终端，其中，所述集线器单元包括混合处理级，其被配置为对从所述多个头端单元分别接收的移动通信信号执行数字混合处理，以及设置在后端的波峰因数降低（CFR）模块 到混合处理阶段，相对于信号传输方向。

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