公开(公告)号：US08934834B2

公开(公告)日：2015-01-13

申请号：US12599457

申请日：2007-11-09

申请人： Sung-Ik Park ,  Heung-Mook Kim ,  Jae-Hyun Seo ,  Ho-Min Eum ,  Jae-Young Lee ,  Yong-Tae Lee ,  Jong-Soo Lim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Heung-Mook Kim ,  Jae-Hyun Seo ,  Ho-Min Eum ,  Jae-Young Lee ,  Yong-Tae Lee ,  Jong-Soo Lim ,  Soo-In Lee

IPC分类号： H04M1/00 ,  H04B7/155

CPC分类号： H04B7/15585

摘要： 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.

摘要翻译： 提供了一个通道内中继器和一个通道间重复方法。 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：US08630278B2

公开(公告)日：2014-01-14

申请号：US12682796

申请日：2008-08-04

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

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

IPC分类号： H04J1/00 ,  H04J4/00 ,  G06F15/16

CPC分类号： H04L45/74 ,  H04H20/30

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08520751B2

公开(公告)日：2013-08-27

申请号：US12514121

申请日：2007-10-20

申请人： Sung-Ik Park ,  Hyoung-Soo Lim ,  Heung-Mook Kim ,  Jong-Soo Lim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Hyoung-Soo Lim ,  Heung-Mook Kim ,  Jong-Soo Lim ,  Soo-In Lee

IPC分类号： H04L27/28 ,  H04B15/00

CPC分类号： H04L27/28

摘要： 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.

摘要翻译： 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：US08423874B2

公开(公告)日：2013-04-16

申请号：US12907511

申请日：2010-10-19

申请人： Jae Hyun Seo ,  Sung Ik Park ,  Jeongchang Kim ,  Heung Mook Kim

发明人： Jae Hyun Seo ,  Sung Ik Park ,  Jeongchang Kim ,  Heung Mook Kim

IPC分类号： H03M13/00

CPC分类号： H03M13/356 ,  H03M13/1102 ,  H03M13/2906 ,  H03M13/2936 ,  H03M13/2957 ,  H03M13/2966 ,  H04L1/0045 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071

摘要： Provided is a terrestrial digital broadcasting transmitter. The terrestrial digital broadcasting transmitter may include a Reed-Solomon (RS) encoder to RS-encode an inputted broadcast signal, a forward error correction (FEC) encoder to channel-encode an inputted additional signal associated with the broadcast signal, a selector to select the RS-encoded broadcast signal or the channel-encoded additional signal, and a vestigial side band (VSB) transmitting part to transmit, to a receiver via a transmitting antenna, the selected signal, the selected signal being the RS-encoded broadcast signal or the channel-encoded additional signal selected by the selector.

摘要翻译： 提供了一种地面数字广播发射机。 地面数字广播发射机可以包括用于对输入的广播信号进行RS编码的里德 - 所罗门（RS）编码器，对与广播信号相关联的输入的附加信号进行信道编码的前向纠错（FEC）编码器，选择器选择 RS编码的广播信号或信道编码的附加信号，以及残留边带（VSB）发送部分，经由发送天线向所述接收机发送所选择的信号，所选择的信号是RS编码的广播信号， 由选择器选择的通道编码的附加信号。

公开(公告)号：US08364074B2

公开(公告)日：2013-01-29

申请号：US12681966

申请日：2008-06-10

申请人： Sung-Ik Park ,  Yong-Tae Lee ,  Jong-Soo Lim ,  Soo-In Lee ,  Ji-Bong Lee ,  Wan-Jin Kim ,  Hyoung-Nam Kim ,  Kyung-Sik Son

发明人： Sung-Ik Park ,  Yong-Tae Lee ,  Jong-Soo Lim ,  Soo-In Lee ,  Ji-Bong Lee ,  Wan-Jin Kim ,  Hyoung-Nam Kim ,  Kyung-Sik Son

IPC分类号： H04B3/36

CPC分类号： H04B7/15585

摘要： 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.

摘要翻译： 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：US08233522B2

公开(公告)日：2012-07-31

申请号：US10545054

申请日：2004-02-11

申请人： Sung-Ik Park ,  Hyoung-Nam Kim ,  Seung-Won Kim ,  Chieteuk Ahn

发明人： Sung-Ik Park ,  Hyoung-Nam Kim ,  Seung-Won Kim ,  Chieteuk Ahn

IPC分类号： H03H7/30 ,  H03K5/159

CPC分类号： H04L25/03057 ,  H03M13/256 ,  H03M13/4161 ,  H03M13/6331 ,  H03M13/6538 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/006 ,  H04L2025/03382 ,  H04L2025/0349 ,  H04L2025/03617

摘要： The conventional decision feedback equalizer has a drawback that can't decide symbols correctly because a simple slicer is used as a symbol detector. A decision feedback equalizer as a symbol detector uses a Trellis Coded Modulation (TCM) decoder whose Trace Back depth is 1 (TBD=1), to thereby decide symbols correctly without decoding delay.

摘要翻译： 传统的判决反馈均衡器具有不能正确地判断符号的缺点，因为简单的限幅器被用作符号检测器。 作为符号检测器的判决反馈均衡器使用跟踪深度为1（TBD = 1）的网格编码调制（TCM）解码器，从而在没有解码延迟的情况下正确地确定符号。

公开(公告)号：US20110170585A1

公开(公告)日：2011-07-14

申请号：US13120756

申请日：2009-04-13

申请人： Sung-Ik Park ,  Heung-Mook Kim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Heung-Mook Kim ,  Soo-In Lee

IPC分类号： H04B17/00

CPC分类号： H04B7/2606

摘要： 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.

摘要翻译： 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：US07974335B2

公开(公告)日：2011-07-05

申请号：US12089657

申请日：2005-12-26

申请人： Sung-Ik Park ,  Seung-Won Kim ,  Soo-In Lee ,  Hyoung-Nam Kim ,  You-Seok Lee

发明人： Sung-Ik Park ,  Seung-Won Kim ,  Soo-In Lee ,  Hyoung-Nam Kim ,  You-Seok Lee

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L25/03057 ,  H04B3/04 ,  H04L25/0212 ,  H04L2025/0349 ,  H04L2025/03617

摘要： A decision feedback equalization apparatus includes a channel estimation unit estimating a channel on received signal based on the received signal and a training sequence; a channel matched filter maximizing SNR from the channel estimated by the channel estimation unit changing channel characteristics of the received signal; a noncausal filter approximating the changed channel; an equalizer input signal storage unit storing received symbols passed through the channel matched and the noncausal filters; a channel equalization unit performing a decision feedback equalization; a Trellis decoder detecting symbol from a channel-equalized signal; a mode selection unit selecting a specific mode; an error signal calculator comparing an output signal of the selected mode with an output signal of the channel equalization unit to calculate an error signal; and a tap coefficient updater updating tap coefficients to the channel equalization unit, an output signal from the storage unit, and an output signal from the Trellis decoder.

摘要翻译： 判定反馈均衡装置包括：信道估计单元，基于接收信号和训练序列估计接收信号上的信道; 信道匹配滤波器，使由信道估计单元所估计的信道的信噪比最大化，改变接收信号的信道特性; 近似改变的信道的非因果滤波器; 均衡器输入信号存储单元，存储通过所述通道匹配的接收符号和非因果滤波器; 执行判决反馈均衡的信道均衡单元; 网格解码器从信道均衡信号检测符号; 选择特定模式的模式选择单元; 误差信号计算器，将所选择的模式的输出信号与所述信道均衡单元的输出信号进行比较，以计算误差信号; 抽头系数更新器更新抽头系数到信道均衡单元，来自存储单元的输出信号和来自网格解码器的输出信号。

公开(公告)号：US20110111694A1

公开(公告)日：2011-05-12

申请号：US12674418

申请日：2008-08-20

申请人： Sung Ik Park ,  Heung Mook Kim ,  Jong-Soo Lim ,  Soo In Lee

发明人： Sung Ik Park ,  Heung Mook Kim ,  Jong-Soo Lim ,  Soo In Lee

IPC分类号： H04B7/14

CPC分类号： H04B7/15585 ,  H04B1/525 ,  H04L25/03019

摘要： An on-channel repeating apparatus and method is provided. The method includes subtracting a replica of a feedback signal from a signal received from a main transmitter or another repeating apparatus; demodulating and equalizing the signal to remove noise, a multipath signal, and the remaining feedback signal from the signal; inserting identification signal having good correlation properties into the signal; modulating the signal; and transmitting the modulated signal.

摘要翻译： 提供了一种通道内重复装置和方法。 该方法包括从从主发射机或其他中继装置接收的信号中减去反馈信号的副本; 解调和均衡信号以去除噪声，多路径信号和来自信号的剩余反馈信号; 将具有良好相关性的识别信号插入信号中; 调制信号; 并发送调制信号。

公开(公告)号：US20110013688A1

公开(公告)日：2011-01-20

申请号：US12517924

申请日：2007-12-05

申请人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Ho-Min Eum ,  Sung-Ik Park ,  Jae-Young Lee ,  Jong-Soo Lim ,  Soo-In Lee

发明人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Ho-Min Eum ,  Sung-Ik Park ,  Jae-Young Lee ,  Jong-Soo Lim ,  Soo-In Lee

IPC分类号： H03K5/159

CPC分类号： H04L25/03343 ,  H04H20/72 ,  H04L2025/03382

摘要： 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.

摘要翻译： 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。 用于提高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送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。