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    • 39. 发明授权
    • On-channel repeating apparatus and method for terrestrial digital television broadcasting service
    • 用于地面数字电视广播业务的在线重复装置和方法
    • US07809048B2
    • 2010-10-05
    • US10750029
    • 2003-12-30
    • Sung-Ik ParkYong-Tae LeeSeung-Won KimSoo-In LeeHo-Min EumJae-Hyun Seo
    • Sung-Ik ParkYong-Tae LeeSeung-Won KimSoo-In LeeHo-Min EumJae-Hyun Seo
    • H04B3/36
    • H04N21/6112H04H20/06H04N5/211H04N5/40H04N5/4401H04N5/455
    • A repeater and method for an ATSC terrestrial digital TV broadcasting service. The on-channel repeater includes: a receiving unit for receiving a Radio Frequency (RF) broadcast signal from a main transmitter; a frequency downlink converting unit for converting the received RF broadcast signal into an intermediate frequency (IF) signal; a demodulating unit for converting the converted IF signal into a baseband signal; an equalizing unit for removing noise and multi-path signals generated from the converted baseband signal; a modulating unit for converting the baseband signal into an IF signal; a frequency uplink converting unit for converting the IF signal into a RF broadcast signal; a high power amplifying unit for amplifying and repeating the converted RF broadcast signal; a transmitting unit for transmitting the RF broadcast signal outputted from the high power amplifying unit; and a signal synchronizing unit for generating the first reference frequency, and generating the second reference frequency based on the first reference frequency such that the transmission/reception signal are frequency-and-phase synchronized.
    • ATSC地面数字电视广播业务的中继器和方法。 所述同频中继器包括:接收单元,用于从主发射机接收射频(RF)广播信号; 频率下行链路转换单元,用于将所接收的RF广播信号转换成中频(IF)信号; 解调单元,用于将转换的IF信号转换为基带信号; 用于去除从转换的基带信号产生的噪声和多路径信号的均衡单元; 用于将基带信号转换成IF信号的调制单元; 频率上行转换单元,用于将IF信号转换成RF广播信号; 用于放大并重复所转换的RF广播信号的高功率放大单元; 发送单元,用于发送从高功率放大单元输出的RF广播信号; 以及信号同步单元,用于产生第一参考频率,并且基于第一参考频率产生第二参考频率,使得发送/接收信号是同频同步的。
    • 40. 发明申请
    • ON-CHANNEL REPEATER AND ON-CHANNEL REPEATING METHOD
    • 通道重发器和通道重复方法
    • US20100221998A1
    • 2010-09-02
    • US12669815
    • 2007-11-09
    • Sung-Ik ParkHeung-Mook KimHo-Min EumJae-Hyun SeoJae-Young LeeYong-Tae LeeJong-Soo LimSoo-In Lee
    • Sung-Ik ParkHeung-Mook KimHo-Min EumJae-Hyun SeoJae-Young LeeYong-Tae LeeJong-Soo LimSoo-In Lee
    • H04B7/14
    • H04B7/15585H04B1/525
    • Provided are an on-channel repeater and method for increasing output of the on-channel repeater by removing feed-back 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-converting 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.
    • 提供一种通道中继器和方法,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。 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。