公开(公告)号：WO2008069592A1

公开(公告)日：2008-06-12

申请号：PCT/KR2007/006314

申请日：2007-12-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  EUM, Ho-Min ,  LEE, Yong-Tae ,  KIM, Heung-Mook ,  SEO, Jae-Hyun ,  PARK, Sung-Ik ,  LEE, Jae-Young ,  LIM, Jong-Soo ,  LEE, Soo-In

Inventor： EUM, Ho-Min ,  LEE, Yong-Tae ,  KIM, Heung-Mook ,  SEO, Jae-Hyun ,  PARK, Sung-Ik ,  LEE, Jae-Young ,  LIM, Jong-Soo ,  LEE, Soo-In

IPC: H04B7/155

CPC classification number: H04B7/155 ,  H04L7/0029

Abstract: Provided is a frequency synchronizing apparatus and method that can synchronize center frequency of radio frequency (RF) transmission signals among distributed repeaters using identical signals as mother signals by reflecting sampling information acquired in a timing recovery process of reception signals transmitted from a main transmitter or other repeaters. The apparatus for synchronizing frequency in distributed repeaters includes: a timing recoverer for compensating sampling timing offset of reception signals; an intermediate frequency (IF) timing offset information reflector for applying the sampling timing offset information extracted in the timing recoverer to digital-to-analog conversion; and a radio frequency (RF) timing offset information reflector for applying the sampling timing offset information extracted in the timing recoverer to RF up-conversion as a reference signal.

Abstract translation: 提供了一种频率同步装置和方法，其可以通过反映在从主发射机等发送的接收信号的定时恢复处理中获取的采样信息，使得使用与母信号相同的信号来分配分布式中继器中的射频（RF）传输信号的中心频率 中继器。 用于在分布式中继器中同步频率的装置包括：用于补偿接收信号的采样定时偏移的定时恢复器; 中频（IF）定时偏移信息反射器，用于将在定时恢复器中提取的采样定时偏移信息应用于数 - 模转换; 以及射频（RF）定时偏移信息反射器，用于将在定时恢复器中提取的采样定时偏移信息应用于RF上变频作为参考信号。

公开(公告)号：WO2008069580A1

公开(公告)日：2008-06-12

申请号：PCT/KR2007/006291

申请日：2007-12-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  SEO, Jae-Hyun ,  KIM, Heung-Mook ,  EUM, Ho-Min ,  PARK, Sung-Ik ,  LEE, Jae-Young ,  LIM, Jong-Soo ,  LEE, Soo-In

Inventor： SEO, Jae-Hyun ,  KIM, Heung-Mook ,  EUM, Ho-Min ,  PARK, Sung-Ik ,  LEE, Jae-Young ,  LIM, Jong-Soo ,  LEE, Soo-In

IPC: H04N7/015

CPC classification number: H04H20/12

Abstract: Provided are an apparatus and method for compensating a feedback path distortion in a digital broadcasting signal. The apparatus for improving a performance of a pre-equalizer in a transmitter of a digital broadcasting system having a feedback path for adaptively generating a filter coefficient of the pre-equalizer, includes a reference signal generator for generating a reference radio frequency (RF) signal, a feedback path estimator for estimating transmission band characteristic information for the feedback path based on the reference RF signal generated from the reference signal generator, and a feedback path compensator for compensating a demodulated signal transferred through the feedback path based on the estimated transmission band characteristic information from the feedback path estimator and generating a filter coefficient of the pre-equalizer.

Abstract translation: 提供了一种用于补偿数字广播信号中的反馈路径失真的装置和方法。 用于改善具有用于自适应地生成预均衡器的滤波器系数的反馈路径的数字广播系统的发射机中的前置均衡器的性能的装置包括：参考信号发生器，用于产生参考射频（RF）信号 基于从参考信号发生器产生的参考RF信号估计用于反馈路径的传输频带特性信息的反馈路径估计器，以及用于基于所估计的传输频带特性补偿通过反馈路径传送的解调信号的反馈路径补偿器 来自反馈路径估计器的信息并产生预均衡器的滤波器系数。

公开(公告)号：WO2008069506A1

公开(公告)日：2008-06-12

申请号：PCT/KR2007/006154

申请日：2007-11-30

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  PARK, Sung-Ik ,  SEO, Jae-Hyun ,  EUM, Ho-Min ,  LEE, Jae-Young ,  KIM, Heung-Mook ,  LEE, Yong-Tae ,  LIM, Jong-Soo ,  LEE, Soo-In

Inventor： PARK, Sung-Ik ,  SEO, Jae-Hyun ,  EUM, Ho-Min ,  LEE, Jae-Young ,  KIM, Heung-Mook ,  LEE, Yong-Tae ,  LIM, Jong-Soo ,  LEE, Soo-In

IPC: H04L25/20

CPC classification number: H04L25/20 ,  H04B7/15557 ,  H04B7/15585 ,  H04H20/06 ,  H04H20/22 ,  H04H20/67 ,  H04L25/03006

Abstract: Provided are a distributed repeater for repeating output signals identical to input signals through a channel different from that of main transmitter signals but identical to channels of other distributed repeaters, and a distributed repeating method thereof. The distributed repeater includes: a pre-processing unit configured to receive a radio frequency (RF) signal transmitted from an external device and demodulate the RF signal into a baseband signal; an equalizer configured to equalize the baseband signal to correct a distortion occurring on a transmission channel; an identification signal generation and insertion unit configured to generate an identification signal for identification of the distributed repeater and network conditioning, and insert the identification signal in the equalized baseband signal; and a post-processing unit configured to convert the baseband signal from the identification signal generation and insertion unit into an RF signal, and send the RF signal.

Abstract translation: 提供一种分布式中继器，用于通过与主发射机信号不同的信道重复与输入信号相同的输出信号，但与其他分布式中继器的信道相同的输出信号及其分布式重复方法。 分布式中继器包括：预处理单元，被配置为接收从外部设备发送的射频（RF）信号，并将RF信号解调为基带信号; 均衡器，其被配置为均衡所述基带信号以校正发生在传输信道上的失真; 识别信号生成和插入单元，被配置为生成用于识别所述分布式中继器的识别信号和网络调理，并将所述识别信号插入所述均衡的基带信号中; 以及后处理单元，被配置为将来自识别信号生成和插入单元的基带信号转换为RF信号，并发送RF信号。

公开(公告)号：WO2007011161A1

公开(公告)日：2007-01-25

申请号：PCT/KR2006/002831

申请日：2006-07-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KIM, Sung-Hoon ,  LEE, Jae-Young ,  KIM, Seung-Won ,  LEE, Soo-In ,  AHN, Chieteuk ,  LEE, Ho-Kyoung ,  KIM, Chang-Joong

Inventor： KIM, Sung-Hoon ,  LEE, Jae-Young ,  KIM, Seung-Won ,  LEE, Soo-In ,  AHN, Chieteuk ,  LEE, Ho-Kyoung ,  KIM, Chang-Joong

IPC: H03M13/23

CPC classification number: H03M13/25 ,  H03M13/256 ,  H03M13/6516 ,  H04L1/0041 ,  H04L1/0059

Abstract: Provided are a method of estimating an encoder for dual stream transmission, and an encoder using the same. The method includes the steps of : a) setting up the number of memories required for an encoder, a free distance condition for robust data, and a free distance condition for mixed stream of robust data and normal data; b) obtaining 1/2 rate encoder combinations that sustain backward compatibility with a typical trellis encoder; c) obtaining encoder combinations H that satisfy the free distance condition for the robust data and the free distance condition for the mixed stream from the 1/2 rate encoder combinations; d) obtaining relations between memories and input/output signals, which satisfy the encoder combinations H; and e) configuring an encoder according to the obtained relation between the memories and the input/output signals.

Abstract translation: 提供了一种用于估计用于双流传输的编码器的方法，以及使用其的编码器。 该方法包括以下步骤：a）建立编码器所需的存储器数量，鲁棒数据的自由距离条件以及稳健数据和正常数据的混合流的自由距离条件; b）获得与典型网格编码器保持向后兼容性的1/2速率编码器组合; c）获得满足来自1/2速率编码器组合的混合流的鲁棒数据和自由距离条件的自由距离条件的编码器组合H; d）获得满足编码器组合H的存储器和输入/输出信号之间的关系; 以及e）根据获得的存储器与输入/输出信号之间的关系配置编码器。

公开(公告)号：WO2007008030A1

公开(公告)日：2007-01-18

申请号：PCT/KR2006/002724

申请日：2006-07-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KIM, Sung-Hoon ,  LEE, Jae-Young ,  KIM, Seung-Won ,  LEE, Soo-In ,  AHN, Chieteuk ,  LEE, Ho-Kyoung ,  KIM, Chang-Joong

Inventor： KIM, Sung-Hoon ,  LEE, Jae-Young ,  KIM, Seung-Won ,  LEE, Soo-In ,  AHN, Chieteuk ,  LEE, Ho-Kyoung ,  KIM, Chang-Joong

IPC: H04N7/24

CPC classification number: H03M13/39

Abstract: Provided is a method for searching for an optimal coder suitable to a dual stream transmission method of a DTV transceiving apparatus, and an encoder and a decoder employing the optimal coder searching method. The optimal coder searching method includes the steps of: a) determining a mixed pattern of normal stream and robust stream; b) determining a trellis structure of the robust stream which is applied to the mixed pattern based on how coders are connected; c) forming a dual stream trellis by mixing a trellis of the normal stream, which is a normal stream trellis, and a trellis of the robust stream, which is a robust stream trellis; d) computing a free distance at departing points of the dual stream trellis structure based on a dual stream free distance computation termination condition; and e) determining the optimal coder based on the free distance.

Abstract translation: 提供了一种用于搜索适合DTV收发装置的双流传输方法的最佳编码器的方法，以及采用最佳编码器搜索方法的编码器和解码器。 最优编码器搜索方法包括以下步骤：a）确定正常流和鲁棒流的混合模式; b）基于编码器如何连接来确定施加到混合模式的鲁棒流的网格结构; c）通过混合作为正常流网格的正常流的网格和作为鲁棒流网格的鲁棒流的网格来形成双流网格; d）基于双流自由距离计算终止条件在双流网格结构的离开点处计算自由距离; 以及e）基于所述自由距离来确定所述最佳编码器。

公开(公告)号：WO2006031077A1

公开(公告)日：2006-03-23

申请号：PCT/KR2005/003073

申请日：2005-09-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  KIM, Sung-Hoon ,  JI, Kum-Ran ,  LEE, Jae-Young ,  KIM, Seung-Won ,  LEE, Soo-In ,  AHN, Chieteuk

Inventor： KIM, Sung-Hoon ,  JI, Kum-Ran ,  LEE, Jae-Young ,  KIM, Seung-Won ,  LEE, Soo-In ,  AHN, Chieteuk

IPC: H04N7/12

CPC classification number: H04N21/2383 ,  H04N19/61 ,  H04N21/4382

Abstract: Provided is a Vestigial Side Band Digital Television (DTV) transmitter /receiver based on Advanced Television System Committee A/53. The invention provides DTV transmitter/receiver having a dual stream structure through generation of robust data which has a transmission rate a fourth as fast as that of normal data, and a method thereof . The DTV transmitter includes: input means for receiving digital video data stream including normal and robust data; encoding means for performing 1/4 rate coding on the digital video data stream so that one bit can be transmitted through two symbols; and transmitting means for modulating/transmitting output signals of the encoding means. This invention can reduce SNR and satisfy TOV of robust data by performing additional FEC on robust data, transmitting/receiving 1/4 rate coded robust data, which are capable of transmitting one-bit data for two symbols, and improving decoding ability of an equalizer and a trellis decoder of a DTV receiver.

Abstract translation: 提供了基于先进电视系统委员会A / 53的残留边带数字电视（DTV）发射机/接收机。 本发明提供具有双流结构的DTV发射机/接收机及其方法，该DTV发射机/接收机通过生成具有与正常数据相同的速度的传输速率的鲁棒数据。 DTV发射机包括：用于接收包括正常和鲁棒数据的数字视频数据流的输入装置; 编码装置，用于对数字视频数据流执行1/4速率编码，使得可以通过两个符号发送一个比特; 以及发送装置，用于调制/发送编码装置的输出信号。 本发明可以通过对鲁棒数据执行附加FEC，发送/接收1/4速率编码的鲁棒数据来降低SNR并满足鲁棒数据的TOV，该数据能够传送两个符号的一位数据，并提高均衡器的解码能力 和DTV接收机的网格解码器。

公开(公告)号：EP4307630A2

公开(公告)日：2024-01-17

申请号：EP23207609.1

申请日：2015-07-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： PARK, Sung-lk ,  KWON, Sun-Hyoung ,  KIM, Jeong-Chang ,  LEE, Jae-Young ,  KIM, Heung-Mook ,  HUR, Nam-Ho

IPC: H04L27/34

Abstract: A broadcast signal transmission apparatus and method using layered division multiplexing are disclosed. A broadcast signal transmission apparatus according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; a frame builder configured to generate a broadcast signal frame using the time-interleaved signal; and an orthogonal frequency division multiplexing (OFDM) transmitter configured to generate a pilot signal that is shared by a core layer corresponding to the core layer signal and an enhanced layer corresponding to the enhanced layer signal.

公开(公告)号：EP3166310A1

公开(公告)日：2017-05-10

申请号：EP15814004.6

申请日：2015-07-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： KWON, Sun-Hyoung ,  PARK, Sung-Ik ,  LEE, Jae-Young

IPC: H04N7/08

CPC classification number: H04W4/06 ,  H04J11/00 ,  H04J2011/0013 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0071 ,  H04L69/22 ,  H04N7/08 ,  H04W52/322 ,  Y02D70/168

Abstract: A signal multiplexing apparatus and method using layered division multiplexing are disclosed. A signal multiplexing apparatus according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame using the time-interleaved signal and L1 signaling information.

Abstract translation: 公开了一种使用分层复用的信号复用装置和方法。 根据本发明的实施例的信号多路复用装置包括：组合器，被配置为通过组合核心层信号和不同功率电平的增强层信号来产生多路复用信号; 功率归一化器，被配置为将所述多路复用信号的功率降低到与所述核心层信号相对应的功率电平; 时间交织器，被配置为通过执行应用于核心层信号和增强层信号两者的交织来生成时间交织信号; 以及帧构造器，其被配置为使用所述时间交织信号和L1信令信息来生成广播信号帧。

公开(公告)号：EP3142313A1

公开(公告)日：2017-03-15

申请号：EP15789406.4

申请日：2015-02-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： PARK, Sung-Ik ,  LEE, Jae-Young ,  KWON, Sun-Hyoung ,  KIM, Heung-Mook ,  HUR, Nam-Ho

IPC: H04L27/26 ,  H04L1/00 ,  H03M13/27

CPC classification number: H04L1/0071 ,  H03M13/27 ,  H04J11/004 ,  H04L1/00 ,  H04L27/3488 ,  H04W52/346

Abstract: An apparatus and method for multiplexing signals using layered division multiplexing are disclosed. A signal multiplexing apparatus according to an embodiment of the present invention includes a combiner configured to combine a core layer signal and an enhanced layer signal at different power levels to generate a multiplexed signal, a power normalizer configured to reduce power of the multiplexed signal to power corresponding to the core layer signal, and a time interleaver configured to perform interleaving applied to both the core layer signal and the enhanced layer signal.

公开(公告)号：EP4156619A1

公开(公告)日：2023-03-29

申请号：EP22202647.8

申请日：2015-08-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： LEE, Jae-Young ,  PARK, Sung-Ik ,  KWON, Sun-Hyoung ,  KIM, Heung-Mook ,  HUR, Nam-Ho

IPC: H04L27/26 ,  H04L1/00 ,  H04J11/00 ,  H04L27/34

Abstract: An apparatus and method for broadcast signal frame using layered division multiplexing are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a bootstrap and a preamble using the time-interleaved signal.