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    • 4. 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。
    • 9. 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。