公开(公告)号：WO2009031748A1

公开(公告)日：2009-03-12

申请号：PCT/KR2008/002707

申请日：2008-05-15

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

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

IPC: H04B7/14

CPC classification number: H04H20/12 ,  H04H20/06

Abstract: Provided is an identification signal analyzing apparatus and method for compensating power of a channel profile occurring at a conventional identification signal analyzing apparatus by using a power compensation. The identification signal analyzing apparatus includes: an identification signal generator for generating an identification signal identical to a known identification signal inserted by a transmission device; a partial correlator for calculating a correlation value between a received signal including the known identification signal inserted by the transmission device and the identification signal generated by the identification signal generator through a partial correlation; a power compensator for compensating power of the correlation value calculated by the partial correlator; and a channel profile extractor for extracting a channel profile from the correlation value compensated by the power compensator.

Abstract translation: 提供一种识别信号分析装置和方法，用于通过使用功率补偿来补偿在常规识别信号分析装置发生的信道分布的功率。 识别信号分析装置包括：识别信号发生器，用于产生与由传输装置插入的已知识别信号相同的识别信号; 一个部分相关器，用于计算包括由发送装置插入的已知识别信号的接收信号与由识别信号发生器通过部分相关产生的识别信号之间的相关值; 功率补偿器，用于补偿由所述部分相关器计算出的相关值的功率; 以及用于从由功率补偿器补偿的相关值中提取信道分布的信道分布提取器。

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：WO2008056902A1

公开(公告)日：2008-05-15

申请号：PCT/KR2007/005366

申请日：2007-10-30

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

Inventor： PARK, Sung-Ik ,  LIM, Hyoung-Soo ,  KIM, Heung-Mook ,  LIM, Jong-Soo ,  LEE, Soo-In

IPC: H04L27/26

CPC classification number: H04L25/022 ,  H04L25/0232 ,  H04L25/025 ,  H04L27/2647

Abstract: Provided is a channel estimation apparatus and method using a linear/nonlinear average in a wireless communication system. The present research provides a channel estimation apparatus and method for estimating a channel between a transmitter and a receiver from a pilot-inserted OFDM signal and linearly or nonlinearly averaging the estimating channel, thereby preventing the equalizer performance from being degraded by noise component of the estimated channel and noise amplification caused by deep fading. The channel estimation apparatus includes: a channel estimation unit configured to estimate a channel coefficient of a channel between a transmitter and a receiver from a pilot-inserted carrier signal according to pilot arrangement; and a linear/nonlinear averaging unit configured to linearly or nonlinearly averaging the estimated channel coefficient, thereby preventing an equalizer performance from being degraded by noise component existing in the channel and noise amplification caused by deep fading.

Abstract translation: 提供了一种在无线通信系统中使用线性/非线性平均的信道估​​计装置和方法。 本研究提供了一种信道估计装置和方法，用于从导频插入OFDM信号估计发射机和接收机之间的信道，并且对估计信道进行线性或非线性平均，从而防止均衡器性能被估计的噪声分量降低 通道和噪声放大引起的深度衰落。 信道估计装置包括：信道估计单元，被配置为根据导频布置从导频插入载波信号估计发射机和接收机之间的信道的信道系数; 以及线性/非线性平均单元，被配置为对所估计的信道系数进行线性或非线性平均化，从而防止均衡器性能由存在于信道中的噪声分量和由深衰落引起的噪声放大降低。

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。

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：WO2010050655A2

公开(公告)日：2010-05-06

申请号：PCT/KR2009/001884

申请日：2009-04-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  PARK, Sung-Ik ,  KIM, Heung-Mook ,  LEE, Soo-In

Inventor： PARK, Sung-Ik ,  KIM, Heung-Mook ,  LEE, Soo-In

IPC: H04B1/707

CPC classification number: H04B7/2606

Abstract: Provided is an apparatus and method for measuring an individual receiving power using an identification signal of a repeater or a transmitter. The apparatus and method includes a total receiving power measuring unit for measuring a total receiving power from transmitters; an identification signal analyzing unit for extracting a channel profile signal from the signal transmitted from the predetermined transmitter through a multi-path, wherein the predetermined transmitter transmits a signal having the identification signal; and an individual receiving power calculating unit for calculating an individual receiving power from the transmitter based on the measured total receiving power and the extracted channel profile signal.

Abstract translation: 提供了一种使用中继器或发射机的识别信号来测量各个接收功率的装置和方法。 该装置和方法包括用于测量来自发射机的总接收功率的总接收功率测量单元; 识别信号分析单元，用于从通过多路径从所述预定发射机发送的信号中提取信道分布信号，其中，所述预定发射机发送具有所述识别信号的信号; 以及个体接收功率计算单元，用于基于所测量的总接收功率和所提取的信道分布信号来计算来自发射机的各个接收功率。

公开(公告)号：WO2010024501A1

公开(公告)日：2010-03-04

申请号：PCT/KR2008/007066

申请日：2008-11-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  SEO, Jae-Hyun ,  KIM, Heung-Mook ,  LEE, Soo-In

Inventor： SEO, Jae-Hyun ,  KIM, Heung-Mook ,  LEE, Soo-In

IPC: H04B7/005

CPC classification number: H04L27/261 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03159 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2025/03414

Abstract: Provided is a channel equalizing apparatus and method for improving channel equalization performance in an Orthogonal Frequency Division Multiplexing (OFDM) reception system applied to digital broadcasting or a communication system. The apparatus, includes: a channel estimating unit for performing channel estimation by using a pilot signal of a frequency domain; a digital filtering unit for changing a characteristic of a channel in a time domain based on an estimated channel estimation result; and a channel equalizing unit for performing channel equalization of a frequency domain on the signal after changing the channel characteristic.

Abstract translation: 提供了一种用于改善应用于数字广播或通信系统的正交频分复用（OFDM）接收系统中的信道均衡性能的信道均衡装置和方法。 该装置包括：信道估计单元，用于通过使用频域的导频信号进行信道估计; 数字滤波单元，用于基于估计的信道估计结果来改变时域中的信道的特性; 以及信道均衡单元，用于在改变信道特性之后对信号进行频域的信道均衡。

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。