公开(公告)号：WO2005069616A1

公开(公告)日：2005-07-28

申请号：PCT/KR2004/003559

申请日：2004-12-31

Applicant: Electronics and Telecommunications Research Institute ,  PARK, Sung-Ik ,  LEE, Yong-Tae ,  EUM, Ho-Min ,  KIM, Heung-Mook ,  SEO, Jae-Hyun ,  KIM, Seung-Won ,  LEE, Soo-In

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

IPC: H04N7/015

CPC classification number: H04N21/6112 ,  H04N5/40

Abstract: Provided is a modulating apparatus and method of an on-channel repeater. An object of the present invention is to provide a modulating apparatus of an on-channel repeater for reducing time delay by configuring and up-sampling a baseband signal, filtering the up-sampled baseband signal with an Equi-Ripple (ER) filter or in a window method, and converting the filtered baseband signal into an RF signal. The modulating apparatus includes: a baseband signal configuring unit for configuring a baseband. signal by combining an input field and a segment sync signal; a pilot adding unit for adding a pilot signal to the baseband signal; a filtering unit for filtering the baseband signal with the pilot signal; and an RF up-converting unit for up-converting the filtered signal into an RF signal. The present invention is used to form an on-channel repeating network in a transmitting system including a digital TV broadcasting system.

Abstract translation: 提供了一种频道内中继器的调制装置和方法。 本发明的目的是提供一种通道内中继器的调制装置，用于通过对基带信号进行配置和上采样来减少时间延迟，用等波纹（ER）滤波器对上采样的基带信号进行滤波，或者 窗口方法，并将滤波后的基带信号转换为RF信号。 调制装置包括：用于配置基带的基带信号配置单元。 信号通过组合输入场和段同步信号; 导频添加单元，用于向所述基带信号添加导频信号; 滤波单元，用于利用导频信号对基带信号进行滤波; 以及用于将经滤波的信号上变频为RF信号的RF上变频单元。 本发明用于在包括数字电视广播系统的发送系统中形成一个信道上重复网络。

公开(公告)号：WO2004105391A1

公开(公告)日：2004-12-02

申请号：PCT/KR2003/002858

申请日：2003-12-27

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： PARK, Sung-Ik ,  LEE, Yong-Tae ,  KIM, Seung-Won ,  LEE, Soo-In

IPC: H04N7/015

CPC classification number: H04N21/6112 ,  H04H20/06 ,  H04N5/211 ,  H04N5/40 ,  H04N5/4401 ,  H04N5/455

Abstract: A repeater and method for an ATSC terrestrial digital TV broadcasting service is disclosed. The on-channel repeater includes: a receiving unit for receiving a Radio Frequency (RF) broadcast signal from a main transmitter; a frequency downlink converting unit for converting the received RF broadcast signal into an intermediate frequency (IF) signal; a demodulating unit for converting the converted IF signal into a baseband signal; an equalizing unit for removing noise and multi-path signals generated from the converted baseband signal; a modulating unit for converting the baseband signal into an IF signal; a frequency uplink converting unit for converting the IF signal into a RF broadcast signal; a high power amplifying unit for amplifying and repeating the converted RF broadcast signal; a transmitting unit for transmitting the RF broadcast signal outputted from the high power amplifying unit; and a signal synchronizing unit for generating the first reference frequency, and generating the second reference frequency based on the first reference frequency such that the transmission/reception signal are frequency-and-phase synchronized.

Abstract translation: 公开了一种用于ATSC地面数字电视广播业务的中继器和方法。 所述同频中继器包括：接收单元，用于从主发射机接收射频（RF）广播信号; 频率下行链路转换单元，用于将所接收的RF广播信号转换成中频（IF）信号; 解调单元，用于将转换的IF信号转换为基带信号; 用于去除从转换的基带信号产生的噪声和多路径信号的均衡单元; 用于将基带信号转换成IF信号的调制单元; 频率上行转换单元，用于将IF信号转换成RF广播信号; 用于放大并重复所转换的RF广播信号的高功率放大单元; 发送单元，用于发送从高功率放大单元输出的RF广播信号; 以及信号同步单元，用于产生第一参考频率，并且基于第一参考频率产生第二参考频率，使得发送/接收信号是同频同步的。

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：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：WO2006115320A1

公开(公告)日：2006-11-02

申请号：PCT/KR2005/004645

申请日：2005-12-29

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

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

IPC: H04B7/14

CPC classification number: H04B7/155 ,  H04B7/15564

Abstract: Provided are an on-channel repeater and a method thereof. The on-channel repeater can extract reception channel information from signals transmitted from a main transmitter or another repeater, compensate for channel distortion caused on a transmission channel by inversely reflecting the extracted reception channel information to the received signals, and transmit the channel-distortion compensated signals through the same channel as a reception channel, and a method thereof. The on-channel repeater includes: a receiver for receiving RF signals transmitted from outside; a down-converter for down- converting the received RF signals into signals of a desired band; a channel-estimator for estimating an inverse value of a reception channel based on the down- converted signals; an adaptation filter for compensating for channel distortion by using a filter having the inverse value of the estimated reception channel; an up- converter for up-converting the channel distortion- compensated signals into RF signals; and a transmitter for transmitting the up-converted RF signals.

Abstract translation: 提供一种同频中继器及其方法。 同频中继器可以从主发射机或另一中继器发送的信号中提取接收信道信息，通过将所提取的接收信道信息反向反映给接收信号来补偿在传输信道上引起的信道失真，并发送信道失真补偿 通过与接收信道相同的信道发送信号，及其方法。 同频中继器包括：用于接收从外部发送的RF信号的接收机; 用于将所接收的RF信号下变频成期望频带的信号的下变频器; 用于基于下变频信号估计接收信道的反值的信道估计器; 适应滤波器，用于通过使用具有估计的接收信道的逆值的滤波器来补偿信道失真; 用于将信道失真补偿信号上变频成RF信号的上变频器; 以及用于发送上变频的RF信号的发射机。

公开(公告)号：EP2188915A1

公开(公告)日：2010-05-26

申请号：EP08753331.1

申请日：2008-05-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： PARK, Sung-Ik ,  KIM, Heung-Mook ,  PARK, So-Ra ,  LEE, Yong-Tae ,  LIM, Jong-Soo ,  LEE, Soo-In

IPC: H04B7/26

CPC classification number: H04L25/0212 ,  H04B7/155 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0228 ,  H04L25/0246

Abstract: Provided is an apparatus and method for estimating inverse channel of a repeater's receiving channel, which ensures stability and causality by generating a time-domain filter coefficient having information on an inverse channel of repeater's receiving channel from a signal transmitted from a main transmitter or another repeater. The apparatus includes: a channel estimator for estimating a channel established by a transmission path from a received signal; an inverse minimum phase filter coefficient generator for generating inverse channel of a minimum phase channel from the estimated channel, and converting the inverse channel of the minimum phase channel into a time-domain filter coefficient; an inverse group delay filter coefficient generator for generating a time-domain filter coefficient by using the estimated channel and the minimum phase channel; and a combiner for generating an inverse channel of a receiving channel in a time domain by combining the filter coefficient and the filter coefficient.

公开(公告)号：EP1875633A1

公开(公告)日：2008-01-09

申请号：EP05822465.0

申请日：2005-12-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： PARK, Sung-Ik ,  LEE, Yong-Tae ,  EUM, Ho-Min ,  KIM, Heung-Mook ,  SEO, Jae-Hyun ,  KIM, Seung-Won, 105-202 Kukhwa Dongseong Apt. ,  LEE, Soo-In, 106-606 Clover Apt.

IPC: H04B7/14

CPC classification number: H04B7/155 ,  H04B7/15564

Abstract: Provided are an on-channel repeater and a method thereof. The on-channel repeater can extract reception channel information from signals transmitted from a main transmitter or another repeater, compensate for channel distortion caused on a transmission channel by inversely reflecting the extracted reception channel information to the received signals, and transmit the channel-distortion compensated signals through the same channel as a reception channel, and a method thereof. The on-channel repeater includes: a receiver for receiving RF signals transmitted from outside; a down-converter for down- converting the received RF signals into signals of a desired band; a channel-estimator for estimating an inverse value of a reception channel based on the down- converted signals; an adaptation filter for compensating for channel distortion by using a filter having the inverse value of the estimated reception channel; an up- converter for up-converting the channel distortion- compensated signals into RF signals; and a transmitter for transmitting the up-converted RF signals.

Abstract translation: 提供了一种同频转发器及其方法。 同频转发器可以从主发射机或另一个中继器发送的信号中提取接收信道信息，通过将提取的接收信道信息反向反射到接收信号来补偿在传输信道上引起的信道失真，并且发送经补偿的信道失真 通过与接收信道相同的信道信号，以及其方法。 同频转发器包括：用于接收从外部发射的RF信号的接收器; 下变频器，用于将接收到的RF信号下变频为期望频带的信号; 信道估计器，用于基于下变频信号来估计接收信道的倒数值; 自适应滤波器，用于通过使用具有估计接收信道的倒数值的滤波器来补偿信道失真; 上变频器，用于将信道失真补偿信号上变频为RF信号; 以及发射器，用于发射上变频的RF信号。

公开(公告)号：EP2188915B1

公开(公告)日：2018-08-15

申请号：EP08753331.1

申请日：2008-05-06

Applicant: Electronics and Telecommunications Research Institute

Inventor： PARK, Sung-Ik ,  KIM, Heung-Mook ,  PARK, So-Ra ,  LEE, Yong-Tae ,  LIM, Jong-Soo ,  LEE, Soo-In

IPC: H04B7/26 ,  H04L25/02 ,  H04B7/155

CPC classification number: H04L25/0212 ,  H04B7/155 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0228 ,  H04L25/0246

Abstract: Provided is an apparatus and method for estimating inverse channel of a repeater's receiving channel, which ensures stability and causality by generating a time-domain filter coefficient having information on an inverse channel of repeater's receiving channel from a signal transmitted from a main transmitter or another repeater. The apparatus includes: a channel estimator for estimating a channel established by a transmission path from a received signal; an inverse minimum phase filter coefficient generator for generating inverse channel of a minimum phase channel from the estimated channel, and converting the inverse channel of the minimum phase channel into a time-domain filter coefficient; an inverse group delay filter coefficient generator for generating a time-domain filter coefficient by using the estimated channel and the minimum phase channel; and a combiner for generating an inverse channel of a receiving channel in a time domain by combining the filter coefficient and the filter coefficient.

公开(公告)号：EP2174430A1

公开(公告)日：2010-04-14

申请号：EP07833957.9

申请日：2007-11-09

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04B7/14

CPC classification number: H04B7/15585 ,  H04B1/525

Abstract: Provided are an on-channel repeater and method for increasing output of the on-channel repeater by removing feedback signals caused by low isolation of transmission/reception antennas. The on-channel repeater includes: a receiver for receiving RF signals and converting the RF signals into baseband signals; a subtractor for subtracting replicas of feedback signals from the received signal; an inverse channel estimator for estimating inverse of a reception channel and generating a filter tab coefficients; a first adaptive filter for compensating for channel distortion of the subtracted signal; a transmitter for converting the signals whose channel distortion is compensated into an RF signal and performing radio transmission; a down- converter for down- convert ing the RF signal converted by the transmitter into the baseband signal; and a replica generator for calculating replicas and feeding back the replicas to the subtractor. The present invention is applied to the on-channel repeater.

公开(公告)号：EP2174430B1

公开(公告)日：2014-07-02

申请号：EP07833957.9

申请日：2007-11-09

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04B7/14 ,  H04B7/155

CPC classification number: H04B7/15585 ,  H04B1/525