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    Digital broadcasting signal transmitting method and device, recording medium thereof, and receiving device thereof
    4.
    发明授权
    Digital broadcasting signal transmitting method and device, recording medium thereof, and receiving device thereof 有权
    数字广播信号发送方法及装置，其记录媒体及其接收装置

    公开(公告)号：US09246806B2

    公开(公告)日：2016-01-26

    申请号：US13966766

    申请日：2013-08-14

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Jae Hyun Seo ,  Hyoung Soo Lim ,  Heung Mook Kim ,  Yong Tae Lee ,  Sung Ik Park ,  Jong Soo Lim ,  Soo In Lee

    IPC: H04L12/28 ,  H04L12/741 ,  H04H20/30

    CPC classification number: H04L45/74 ,  H04H20/30

    Abstract: In a digital broadcasting signal transmission system, a transmission frame includes a frame body and a frame header, and the frame body is divided into a plurality of sub-bands in the frequency domain and is divided into a plurality of symbols in the time domain. The frame header is provided in the former part of the transmission frame and is transmitted with a signal in the time domain. The frame body includes a plurality of services, and the services respectively receive at least one sub-band and at least one symbol. The frame header includes information on the plurality of services, and information on the plurality of services includes information on the sub-band and the symbol to which the services are allocated, information on channel encoding levels of the services, and information on digital modulation levels of the services.

    Abstract translation: 在数字广播信号传输系统中，传输帧包括帧体和帧头，并且帧体被划分成频域中的多个子带，并且在时域中被划分为多个符号。 帧头在传输帧的前一部分中提供，并且在时域中以信号发送。 帧体包括多个服务，并且服务分别接收至少一个子带和至少一个符号。 帧头包括关于多个服务的信息，并且关于多个服务的信息包括关于子带和分配服务的符号的信息，关于服务的信道编码级别的信息以及关于数字调制级别的信息 的服务。

    Apparatus and method of transmitting hierarchically modulated signal
    6.
    发明授权
    Apparatus and method of transmitting hierarchically modulated signal 有权
    发送分层调制信号的装置和方法

    公开(公告)号：US08948308B2

    公开(公告)日：2015-02-03

    申请号：US13860647

    申请日：2013-04-11

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Hyoung Soo Lim ,  Tae Jin Jung

    IPC: H04L27/20 ,  H04L27/18 ,  H04L27/26 ,  H04L27/34

    CPC classification number: H04L27/20 ,  H04L27/183 ,  H04L27/2604 ,  H04L27/3488

    Abstract: An apparatus and a method of transmitting hierarchically modulated signals are provided. The present invention includes: a basic layer symbol generator generating a first layer signal; an enhancement layer symbol generator generating a second layer signal synchronized with the first layer signal and having different signal power; and a hierarchical modulator hierarchically modulating the first layer signal and the second layer signal, wherein the enhancement layer symbol generator performs constellation rotation rotating bundles configured as constellation points formed by the second layer signal based on constellation points of the first layer signal by a predetermined angle. According to the exemplary embodiment of the present invention, it is possible to improve the receiving performance of the second layer signals by applying the constellation rotation technology to the second layer signals in regards of the signal transmission system using the hierarchical modulation technology.

    Abstract translation: 提供了一种发送分层调制信号的装置和方法。 本发明包括：生成第一层信号的基本层符号发生器; 产生与第一层信号同步且具有不同信号功率的第二层信号的增强层符号发生器; 以及层次调制器，对所述第一层信号和所述第二层信号进行分层调制，其中所述增强层符号发生器基于所述第一层信号的星座点以预定角度执行配置为由所述第二层信号形成的星座点的星座旋转旋转束 。 根据本发明的示例性实施例，通过将星座旋转技术应用于使用分层调制技术的信号传输系统的第二层信号，可以提高第二层信号的接收性能。

    System for detecting signal based on partial maximum likelihood and method thereof
    9.
    发明授权
    System for detecting signal based on partial maximum likelihood and method thereof 有权
    基于部分最大似然检测信号的系统及其方法

    公开(公告)号：US09419745B2

    公开(公告)日：2016-08-16

    申请号：US14606150

    申请日：2015-01-27

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Myung Sun Beak ,  Hun Hee Lee ,  Hyoung Soo Lim ,  Nam Ho Hur

    IPC: H04L1/00 ,  H04L25/03

    CPC classification number: H04L1/00 ,  H04L1/0054 ,  H04L25/03 ,  H04L25/03057 ,  H04L25/03299 ,  H04L25/03343 ,  H04L25/03993

    Abstract: Disclosed is a receiver including: a partial filter generating unit selecting a signal as large as a predetermined magnitude among sampled signals and extracting a filter coefficient for the selected signal magnitude to perform QR resolution for the filter coefficient; a partial ML setting unit determining the lengths and the number of candidate symbol combinations of a signal to be detected and generating a candidate ML symbol combination based on the determined lengths and number of candidate symbol combinations; a signal detecting unit detecting residual symbols in a predetermined part of the sampled signal based on the generated candidate ML symbol combination; and a final signal selecting unit choosing a candidate symbol closest to the sampled signal among the detected candidate symbols as a finally detected signal.

    Abstract translation: 公开了一种接收机，包括：部分滤波器生成单元，在采样信号中选择大至预定幅度的信号，并提取所选信号幅度的滤波器系数，以对滤波器系数执行QR分辨; 部分ML设置单元，基于所确定的候选符号组合的长度和数量来确定要检测的信号的候选符号组合的长度和数量，并生成候选ML符号组合; 信号检测单元，基于所生成的候选ML符号组合来检测采样信号的预定部分中的残余符号; 以及最终信号选择单元，将检测到的候选符号中最接近采样信号的候选符号作为最终检测信号进行选择。

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