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    • 27. 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。