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USRE42317E1 Method and apparatus for filtering digital television signals 有权
标题翻译：数字电视信号滤波方法及装置
公开(公告)号：USRE42317E1
公开(公告)日：2011-05-03
申请号：US11709931
申请日：2007-02-22
申请人： Naofal Mohammed Wassel Al-Dhahir , John Erik Hersey , Nick Andrew Van Stralen , Richard Louis Frey , Mark Lewis Grabb
发明人： Naofal Mohammed Wassel Al-Dhahir , John Erik Hersey , Nick Andrew Van Stralen , Richard Louis Frey , Mark Lewis Grabb
IPC分类号： H04N5/213
CPC分类号： H04N5/211 , Y10S348/914
摘要： A system for filtering digital television signals is provided. The system comprises a generator for providing a first data sequence to a private data packetizer, and a transmitter for transmitting the packetized first data sequence in a data channel of a digital television signal. The system further includes a receiver for receiving the digital television signal and recovering the first data sequence. The receiver includes a channel estimator for providing an estimate of channel characteristics, such as estimated channel impulse estimate and estimated noise variance. The receiver further includes an adaptive equalizer filter having an input for receiving the digital television signal and an input for receiving adaptive filter coefficients. The receiver further includes a coefficient processor for calculating adaptive filter coefficients based on the channel estimate, and providing the adaptive filter coefficients to the adaptive equalizer filter. The digital television signal is thus filtered to remove undesired channel effects.
摘要翻译：提供了一种用于过滤数字电视信号的系统。该系统包括用于向专用数据分组器提供第一数据序列的发生器和用于在数字电视信号的数据信道中发送分组化的第一数据序列的发射机。该系统还包括用于接收数字电视信号并恢复第一数据序列的接收机。接收机包括用于提供信道特性的估计的信道估计器，例如估计的信道脉冲估计和估计的噪声方差。接收机还包括具有用于接收数字电视信号的输入端和用于接收自适应滤波器系数的输入端的自适应均衡器滤波器。接收机还包括系数处理器，用于基于信道估计来计算自适应滤波器系数，并将自适应滤波器系数提供给自适应均衡器滤波器。因此数字电视信号被滤波以去除不需要的信道效应。

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