公开(公告)号：WO2009014281A1

公开(公告)日：2009-01-29

申请号：PCT/KR2007/005650

申请日：2007-11-09

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

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.

Abstract translation: 提供一种用于通过去除由发送/接收天线的低隔离引起的反馈信号来增加在线中继器的输出的同频中继器和方法。 同频中继器包括：用于接收RF信号并将RF信号转换成基带信号的接收机; 减法器，用于从接收信号中减去反馈信号的副本; 反向信道估计器，用于估计接收信道的反向并产生滤波器选项卡系数; 用于补偿所述减去的信号的信道失真的第一自适应滤波器; 用于将其信道失真补偿的信号转换成RF信号并执行无线电传输的发射机; 用于将由发射机转换的RF信号下变频为基带信号的下变频器; 以及用于计算副本并将副本反馈给减法器的副本生成器。 本发明应用于同频中继器。

公开(公告)号：WO2005117433A1

公开(公告)日：2005-12-08

申请号：PCT/KR2005/001394

申请日：2005-05-12

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

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

IPC: H04N7/015

CPC classification number: H04H20/02 ,  H03J7/04 ,  H04B7/15528 ,  H04H20/67 ,  H04H20/72 ,  H04W56/00

Abstract: Provided is a frequency synchronizing apparatus and method that can synchronize frequencies between receiving signals and transmitting signals by extracting a carrier error and sampling timing error information in a synchronization process of the receiving signal from a main transmitter or another repeater and reflecting them in the transmitting signal in an on-channel repeater. The apparatus includes a carrier recovery means for compensating a carrier frequency error of a receiving signal; a timing recovery means for compensating a sampling timing error of the receiving signal; a carrier error reflecting means for reflecting the carrier frequency error extracted from the carrier recovery means to a transmitting signal; and a timing error reflecting means for reflecting the sampling timing error extracted from the timing recovery means to the transmitting signal. The present invention is used to form an on-channel repeating network in any transmission system including a digital television broadcasting system.

Abstract translation: 提供一种频率同步装置和方法，其可以通过在来自主发射机或另一个中继器的接收信号的同步处理中提取载波误差和采样定时误差信息来同步接收信号和发射信号之间的频率并将其反射到发射信号中 在一个通道中继器。 该装置包括用于补偿接收信号的载波频率误差的载波恢复装置; 定时恢复装置，用于补偿接收信号的采样定时误差; 用于将从载波恢复装置提取的载波频率误差反映到发射信号的载波误差反射装置; 以及定时误差反映装置，用于将从定时恢复装置提取的采样定时误差反映到发射信号。 本发明用于在包括数字电视广播系统的任何传输系统中形成一个同信道重复网络。

公开(公告)号：WO2008140163A1

公开(公告)日：2008-11-20

申请号：PCT/KR2007/005647

申请日：2007-11-09

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

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

IPC: H04B7/14

CPC classification number: H04B7/15585

Abstract: Provided is an on-channel repeater, which removes feedback signals caused due to low isolation of transmission/reception antennas and a method thereof. The on-channel repeater includes : a receiver for receiving radio frequency (RF) signals and converting them into baseband signals; a subtractor for subtracting replicas of feedback signals from the baseband signals to thereby produce signals whose feedback signals are primarily removed; a demodulator for demodulating the signals which include the remaining feedback signals; an equalizer for equalizing the demodulated signals to thereby produce equalized signals; a transmitter for modulating the equalized signals to thereby produce modulated signals, converting the modulated signals into RF signals, and transmitting the RF signals in the air; a down-converter for down-converting the RF signals into baseband signals; and a replica generator for calculating the replicas based on the baseband signals of the down- converter and the signals without feedback signals of the subtractor, and feeding back them to the subtractor.

Abstract translation: 提供一种同信道中继器，其消除由于发送/接收天线的低隔离引起的反馈信号及其方法。 同频中继器包括：用于接收射频（RF）信号并将其转换成基带信号的接收机; 减法器，用于从基带信号减去反馈信号的副本，从而产生其反馈信号被主要去除的信号; 解调器，用于解调包括剩余反馈信号的信号; 均衡器，用于均衡解调的信号，从而产生均衡的信号; 用于调制均衡信号从而产生调制信号的发射机，将调制信号转换为RF信号，并在空中传送RF信号; 用于将RF信号下变频为基带信号的下变频器; 以及用于基于下变频器的基带信号和没有减法器的反馈信号的信号来计算副本的副本生成器，并将其反馈到减法器。

公开(公告)号：WO2007043759A1

公开(公告)日：2007-04-19

申请号：PCT/KR2006/003885

申请日：2006-09-28

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

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

IPC: H04B1/10

CPC classification number: H04B1/04 ,  H03F1/3241 ,  H03F1/3247 ,  H04B2001/0425

Abstract: An apparatus for correcting a non-linear distortion includes a pre-distorter for pre-distorting a transmit signal inputted from an external apparatus based on pre-distortion characteristics outputted from a pre-distortion characteristic predictor; a modulator for modulating the pre-distorted signal to thereby generate a modulated signal; a frequency up-converter for up-converting a frequency of the modulated signal to thereby generate an up-converted signal; a high power amplifier for amplifying the up-converted signal to a high power amplified signal; a frequency down-converter for down-converting a frequency of the high power amplified signal, thereby generate a down-converted signal; a demodulator for demodulating the down-converted signal, to thereby generate a demodulated signal; a high power amplifying characteristic predictor for predicting characteristics of the high power amplifier based on the pre-distorted signal and the demodulated signal; and a pre-distortion characteristic predictor for predicting the pre-distortion characteristics based on the pre-distorted signal and the predicted high power amplifying characteristics.

Abstract translation: 用于校正非线性失真的装置包括：预失真器，用于基于从预失真特性预测器输出的预失真特性来预失真从外部设备输入的发送信号; 调制器，用于调制预失真信号从而产生调制信号; 上变频器，用于上变频调制信号的频率，从而产生上变频信号; 用于将上变频信号放大到高功率放大信号的高功率放大器; 降频转换器，用于下变频大功率放大信号的频率，从而产生下变频信号; 解调器，用于解调下变频信号，从而产生解调信号; 用于基于预失真信号和解调信号来预测大功率放大器的特性的高功率放大特性预测器; 以及预失真特性预测器，用于基于预失真信号和预测的高功率放大特性预测预失真特性。

公开(公告)号：WO2005041571A1

公开(公告)日：2005-05-06

申请号：PCT/KR2004/002767

申请日：2004-10-29

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

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

IPC: H04N7/015

CPC classification number: H04H20/06 ,  H04B7/15564 ,  H04N5/211 ,  H04N5/38

Abstract: Provided is an on-channel repeater and method thereof. The on-channel repeating apparatus includes: a receiving unit for receiving a Radio Frequency (RF) broadcast signal; a demodulating unit for converting the RF signal into a baseband signal; an equalizing unit for equalizing the baseband signal to generate an equalized baseband signal; a modulating unit for converting the equalized baseband signal into an RF signal; and a transmitting unit for transmitting the RF signal.

Abstract translation: 提供了一种同频转发器及其方法。 该同频转播设备包括：接收单元，用于接收射频（RF）广播信号; 解调单元，用于将RF信号转换为基带信号; 均衡单元，用于均衡所述基带信号以生成均衡的基带信号; 调制单元，用于将均衡后的基带信号转换为RF信号; 以及用于发送RF信号的发送单元。

公开(公告)号：WO2009048215A1

公开(公告)日：2009-04-16

申请号：PCT/KR2008/003220

申请日：2008-06-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION ,  PARK, Sung-Ik ,  LEE, Yong-Tae ,  LIM, Jong-Soo ,  LEE, Soo-In ,  LEE, Ji-Bong ,  KIM, Wan-Jin ,  KIM, Hyoung-Nam ,  SON, Kyung-Sik

Inventor： PARK, Sung-Ik ,  LEE, Yong-Tae ,  LIM, Jong-Soo ,  LEE, Soo-In ,  LEE, Ji-Bong ,  KIM, Wan-Jin ,  KIM, Hyoung-Nam ,  SON, Kyung-Sik

IPC: H04B7/14

CPC classification number: H04B7/15571

Abstract: Provided is an on-channel repeater capable of removing feedback signals based on pilot partitioning, which can efficiently remove a feedback signal by quickly coping with even a situation in which a feedback channel changes rapidly, by reducing a filter-coefficient update interval, i.e., increasing the number of times of filter-coefficient creation, through pilot partitioning, and a method thereof. The on-channel repeater includes: a receiver for receiving a signal; a subtractor for subtracting a replica of a feedback signal from the signal received in the receiver to remove the feedback signal; a replica creator for creating a filter coefficient using pilot partitioning, creating a replica of the feedback signal using the created filter coefficient, and feeding back the created replica to the subtractor; and a transmitter for transmitting an output signal of the subtractor.

Abstract translation: 提供一种能够基于导频分割去除反馈信号的同信道中继器，其可以通过快速处理反馈信道快速变化的情况，通过减少滤波器系数更新间隔来有效地去除反馈信号，即， 通过导频分割增加滤波器系数创建的次数及其方法。 同频中继器包括：用于接收信号的接收机; 减法器，用于从接收器中接收的信号中减去反馈信号的副本以去除反馈信号; 用于使用导频分区创建滤波器系数的副本创建器，使用所创建的滤波器系数创建反馈信号的副本，以及将所创建的副本反馈到减法器; 以及用于发送减法器的输出信号的发送器。

公开(公告)号：WO2009031746A1

公开(公告)日：2009-03-12

申请号：PCT/KR2008/002534

申请日：2008-05-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  PARK, Sung-Ik ,  KIM, Heung-Mook ,  PARK, So-Ra ,  LEE, Yong-Tae ,  LIM, Jong-Soo ,  LEE, Soo-In

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.

Abstract translation: 提供了一种用于估计中继器的接收信道的反向信道的装置和方法，其通过从从主发射机或另一个中继器发送的信号生成具有关于中继器的接收信道的反向信道的信息的时域滤波器系数来确保稳定性和因果关系 。 该装置包括：信道估计器，用于从接收信号估计由传输路径建立的信道; 反相最小相位滤波器系数发生器，用于从估计的信道产生最小相位信道的反向信道，并将最小相位信道的反向信道转换为时域滤波器系数; 逆群延迟滤波器系数发生器，用于通过使用估计信道和最小相位信道来产生时域滤波器系数; 以及组合器，用于通过组合滤波器系数和滤波器系数来在时域中产生接收信道的反向信道。

公开(公告)号：WO2007043776A1

公开(公告)日：2007-04-19

申请号：PCT/KR2006/004001

申请日：2006-10-04

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

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

IPC: H04N7/00

CPC classification number: H04H20/02 ,  H04L25/03343 ,  H04L2025/03477

Abstract: Provided is a pre-equalization apparatus and method that can reduce time delay of an on-channel repeater. The pre-equalization apparatus reduces time delay in an on-channel repeater by generating a modified filter coefficient from a given filter coefficient and a pre-equalization filter coefficient after an up-sampling process and filtering up-sampled signals. The pre-equalization apparatus includes: a baseband signal generating unit for forming a baseband signal by combining an inputted signa, field sync signal, and segment sync signal; a pilot adding unit for adding a pilot signal to the baseband signal; an up-sampling unit for up-sampling the baseband signal having the pilot signal; a pre-equalization filter coefficient generating unit for generating a pre-equalization filter coefficient; a modified filter coefficient generating unit for generating a modified filter coefficient by using the pre-equalization filter coefficient and a given filter coefficient; and a filtering unit for filtering the up-sampled signal by using the modified filter coefficient.

Abstract translation: 提供了一种可以减少同信道中继器的时间延迟的预均衡装置和方法。 预均衡装置通过在上采样处理之后从给定滤波器系数和预均衡滤波器系数产生修正的滤波器系数并对上采样信号进行滤波，从而减少同频中继器中的时间延迟。 预均衡装置包括：基带信号生成单元，用于通过组合输入的信号，场同步信号和分段同步信号来形成基带信号; 导频添加单元，用于向所述基带信号添加导频信号; 上采样单元，用于对具有导频信号的基带信号进行上采样; 预均衡滤波器系数产生单元，用于产生预均衡滤波器系数; 修正滤波器系数生成单元，用于通过使用预均衡滤波器系数和给定的滤波器系数来生成修正的滤波器系数; 以及滤波单元，用于通过使用修正的滤波器系数对上采样信号进行滤波。

公开(公告)号：WO2008140162A1

公开(公告)日：2008-11-20

申请号：PCT/KR2007/005644

申请日：2007-11-09

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

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

IPC: H04B7/14

CPC classification number: H04B7/15585

Abstract: Provided are an on- channel repeater and an on- channel repeating method. The on-channel repeater includes : a receiving means for receiving a Radio Frequency (RF) signal; a subtracting means for subtracting a replica of feedback signals from the signal received by the receiving means; a replica generating means for calculating the replica based on the signal acquired from the subtraction in the subtracting means and feeding back the replica to the subtracting means; an inverse channel estimating means for estimating inverse of a reception channel based on the signal acquired from the subtraction in the subtracting means and generating filter tab coefficients; a first adaptive filtering means for compensating for channel distortion of the signal subtracted by the subtracting means based on the filter tab coefficients generated in the inverse channel estimating means; and a transmitting means for converting a signal whose channel distortion is compensated by the first adaptive filtering means into an RF signal and performing radio transmission.

Abstract translation: 提供了一种在线通道中继器和在线重复方法。 所述同频中继器包括：接收装置，用于接收射频（RF）信号; 减法装置，用于从接收装置接收的信号中减去反馈信号的副本; 复制产生装置，用于基于从减法装置中减法获得的信号计算副本，并将副本反馈给减法装置; 反向信道估计装置，用于基于从减法装置中的减法获得的信号估计接收信道的反向，并产生滤波器标签系数; 第一自适应滤波装置，用于基于在反向信道估计装置中产生的滤波器选项卡系数来补偿由减法装置减去的信号的信道失真; 以及发送装置，用于将由第一自适应滤波装置补偿的信道失真的信号转换为RF信号并执行无线电发送。

公开(公告)号：WO2005109876A1

公开(公告)日：2005-11-17

申请号：PCT/KR2004/003560

申请日：2004-12-31

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

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

IPC: H04N7/015

CPC classification number: H04L25/242 ,  H04B7/155 ,  H04L2025/03375 ,  H04N5/211 ,  H04N5/38

Abstract: Provided are an on-channel repeater and a method thereof. The repeater receives signals on one channel and distributes the signals on the same channel by converting RF signals from a main transmitter into baseband signals; equalizing them in a high-performance equalizer; adding a repeater identifier to them; modulating the baseband signals with the repeater identifier into RF signals. The repeater includes: a receiver for receiving RF signals; a demodulator for demodulating the RF signals into baseband signals; an equalizer for equalizing the baseband signals; an adder for adding a repeater identifier to the baseband signals; a modulator for modulating the baseband signals with the repeater identifier added in the adder into RF signals; and a transmitter for transmitting the RF signals modulated in the modulator. The technology of the present invention is used to form an on-channel repeating network in an arbitrary transmission system including a digital television broadcasting system.

Abstract translation: 提供一种同频中继器及其方法。 中继器在一个信道上接收信号，并通过将主发射机的射频信号转换成基带信号将信号分配到同一信道上; 在高性能均衡器中均衡它们; 向他们添加中继器标识符; 将具有中继器标识符的基带信号调制成RF信号。 中继器包括：用于接收RF信号的接收机; 用于将RF信号解调为基带信号的解调器; 用于均衡基带信号的均衡器; 加法器，用于将中继器标识符与基带信号相加; 调制器，用加法器中加入的中继器标识符将基带信号调制成RF信号; 以及用于发送在调制器中调制的RF信号的发射机。 本发明的技术用于在包括数字电视广播系统的任意传输系统中形成一个信道上重复网络。