公开(公告)号：US08681847B2

公开(公告)日：2014-03-25

申请号：US13057164

申请日：2008-11-28

申请人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Soo-In Lee

发明人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Soo-In Lee

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

CPC分类号： H04L27/261 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03159 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2025/03414

摘要： 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.

摘要翻译： 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：US20110111722A1

公开(公告)日：2011-05-12

申请号：US12676656

申请日：2008-05-15

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

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

IPC分类号： H04B1/16

CPC分类号： H04H20/12 ,  H04H20/06

摘要： 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.

摘要翻译： 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：US07844219B2

公开(公告)日：2010-11-30

申请号：US11912536

申请日：2005-12-29

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

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

IPC分类号： H04Q7/20

CPC分类号： H04B7/155 ,  H04B7/15564

摘要： 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.

摘要翻译： 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到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信号下变频为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相值的信道估计器; 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：US07756473B2

公开(公告)日：2010-07-13

申请号：US11579789

申请日：2004-12-31

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

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

IPC分类号： H04B7/14

CPC分类号： H04L25/242 ,  H04B7/155 ,  H04L2025/03375 ,  H04N5/211 ,  H04N5/38

摘要： 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.

摘要翻译： 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为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，向其中添加中继器标识符; 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：US20090219088A1

公开(公告)日：2009-09-03

申请号：US12089475

申请日：2006-09-28

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

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

IPC分类号： H03F1/26

CPC分类号： H04B1/04 ,  H03F1/3241 ,  H03F1/3247 ,  H04B2001/0425

摘要： 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.

摘要翻译： 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：US20090209201A1

公开(公告)日：2009-08-20

申请号：US11912536

申请日：2005-12-29

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

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

IPC分类号： H04B7/14

CPC分类号： H04B7/155 ,  H04B7/15564

摘要： 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.

摘要翻译： 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到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信号下变频为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相值的信道估计器; 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：US08767890B2

公开(公告)日：2014-07-01

申请号：US12447736

申请日：2007-10-12

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

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

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04H20/06 ,  H04B1/707 ,  H04B7/15528 ,  H04H20/12 ,  H04H60/41

摘要： Provided is an apparatus and method for analyzing identification (ID) signals by converting radio frequency (RF) signals which are transmitted with an ID signal added thereto by a transmitting part, e.g., a plurality of transmitters or repeaters, into signals of a desired band; creating ID signals that are identical to the ID signals added to the RF signals; calculating correlation values between the converted signals and the created ID signals based on partial correlation; and extracting channel profile of multi-path signals caused by a channel between the transmitting part and the ID signal analyzing apparatus from the correlation value. The technology of the present research is applied to broadcasting and communication.

摘要翻译： 提供了一种用于通过将由发射部分（例如多个发射器或中继器）附加的ID信号发射的射频（RF）信号转换成期望频带的信号来分析识别（ID）信号的装置和方法 ; 创建与添加到RF信号的ID信号相同的ID信号; 基于部分相关来计算转换后的信号与所创建的ID信号之间的相关值; 以及从所述相关值提取由所述发送部分和所述ID信号分析装置之间的信道引起的多径信号的信道简档。 本研究的技术应用于广播和通信。

公开(公告)号：US08619895B2

公开(公告)日：2013-12-31

申请号：US13211829

申请日：2011-08-17

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

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

IPC分类号： H04L27/18

CPC分类号： H04N21/4348 ,  H04L1/006 ,  H04L1/0065 ,  H04N21/23614 ,  H04N21/2383 ,  H04N21/4382

摘要： Disclosed are a method and an apparatus for transmitting and receiving broadcast data in a digital broadcasting system. The method for transmitting and receiving broadcast data in a digital broadcasting system includes receiving the main data encoded with symbols having a plurality of levels; deciding whether levels of main data symbols encoded with symbols having the plurality of levels belong to a first group; and mapping the main data symbols to extended levels by using modulation values of the additional data if it is decided that the levels of the main data symbols belong to the first group.

摘要翻译： 公开了一种用于在数字广播系统中发送和接收广播数据的方法和装置。 在数字广播系统中发送和接收广播数据的方法包括接收用具有多个等级的符号编码的主数据; 确定用具有多个等级的符号编码的主数据符号的电平是否属于第一组; 以及如果确定主数据符号的级别属于第一组，则通过使用附加数据的调制值将主数据符号映射到扩展级。

公开(公告)号：US08442098B2

公开(公告)日：2013-05-14

申请号：US12517613

申请日：2007-11-30

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

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

IPC分类号： H04B3/36

CPC分类号： H04L25/20 ,  H04B7/15557 ,  H04B7/15585 ,  H04H20/06 ,  H04H20/22 ,  H04H20/67 ,  H04L25/03006

摘要： 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.

摘要翻译： 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：US08170470B2

公开(公告)日：2012-05-01

申请号：US12669815

申请日：2007-11-09

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

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

IPC分类号： H04B3/36 ,  H04B17/02 ,  H04B7/15 ,  H04B7/14

CPC分类号： H04B7/15585 ,  H04B1/525

摘要： Provided are an on-channel repeater for repeating an output signal the same as an input signal on channel by removing feedback signals caused by low isolation of a transmission/reception antenna by converting a transmitted Radio Frequency (RF) signal into a signal of a predetermined band and subtracting a replica of the feedback signal from the converted signal, and by compensating for channel distortion of a reception signal by estimating an inverse of reception channel from a signal acquired by removing the feedback signal, and an on-channel repeating method.

摘要翻译： 提供一种同信道中继器，用于通过将发送的射频（RF）信号转换为预定的信号的信号，通过消除由发送/接收天线的低隔离引起的反馈信号来重复与信道上的输入信号相同的输出信号 并且从经转换的信号中减去反馈信号的副本，并且通过从通过去除反馈信号获取的信号估计接收信道的反向来补偿接收信号的信道失真，以及通道重复方法。