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    • 4. 发明申请
    • PRE-EQUALIZATION APPARATUS AND METHOD FOR REDUCING TIME DELAY IN ON-CHANNEL REPEATER
    • 预均衡装置和减少频道间隔时间延迟的方法
    • WO2007043776A1
    • 2007-04-19
    • PCT/KR2006/004001
    • 2006-10-04
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEKIM, Heung-MookPARK, Sung-IkSEO, Jae-HyunEUM, Ho-MinLEE, Yong-TaeKIM, Seung-WonLEE, Soo-In
    • KIM, Heung-MookPARK, Sung-IkSEO, Jae-HyunEUM, Ho-MinLEE, Yong-TaeKIM, Seung-WonLEE, Soo-In
    • H04N7/00
    • H04H20/02H04L25/03343H04L2025/03477
    • 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.
    • 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。
    • 6. 发明申请
    • APPARATUS AND METHOD OF ON-CHANNEL REPEATER
    • 通道重复器的设备和方法
    • WO2006115320A1
    • 2006-11-02
    • PCT/KR2005/004645
    • 2005-12-29
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEPARK, Sung-IkLEE, Yong-TaeEUM, Ho-MinKIM, Heung-MookSEO, Jae-HyunKIM, Seung-WonLEE, Soo-In
    • PARK, Sung-IkLEE, Yong-TaeEUM, Ho-MinKIM, Heung-MookSEO, Jae-HyunKIM, Seung-WonLEE, Soo-In
    • H04B7/14
    • H04B7/155H04B7/15564
    • 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.
    • 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。
    • 7. 发明申请
    • ON-CHANNEL REPEATER AND ON-CHANNEL REPEATING METHOD
    • 通道重发器和通道重复方法
    • WO2008140163A1
    • 2008-11-20
    • PCT/KR2007/005647
    • 2007-11-09
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEPARK, Sung-IkKIM, Heung-MookLEE, Jae-YoungSEO, Jae-HyunEUM, Ho-MinLEE, Yong-TaeLIM, Jong-SooLEE, Soo-In
    • PARK, Sung-IkKIM, Heung-MookLEE, Jae-YoungSEO, Jae-HyunEUM, Ho-MinLEE, Yong-TaeLIM, Jong-SooLEE, Soo-In
    • H04B7/14
    • H04B7/15585
    • 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.
    • 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。