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    • 1. 发明申请
    • DIGITAL BROADCASTING TRANSMISSION/RECEPTION DEVICES CAPABLE OF IMPROVING A RECEIVING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF
    • 能够提高接收性能的数字广播传输/接收设备及其信号处理方法
    • US20090135936A1
    • 2009-05-28
    • US12260571
    • 2008-10-29
    • Yong-deok CHANGHae-joo JeongJoop-soo Kim
    • Yong-deok CHANGHae-joo JeongJoop-soo Kim
    • H04L5/12H04L27/06
    • H04L25/03866H04L1/0057H04L1/006H04L1/0065H04L1/0071
    • Disclosed is a digital broadcasting transmission/reception system having an improved reception performance and in a signal-processing method thereof. A digital broadcasting transmitter comprises a TS stream generator for inputting robust and normal packets having stuff bytes in predetermined positions and generating dual TS stream by inserting the robust packets between the normal packets; a randomizer for randomizing the dual TS stream; a stuff byte exchanger for replacing the stuff bytes of a randomized data streams from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performance can be improved at poor multipath channels.
    • 公开了一种具有改善的接收性能的数字广播发射/接收系统及其信号处理方法。 数字广播发射机包括一个TS流发生器,用于在预定位置输入具有填充字节的鲁棒和正常分组,并通过在正常分组之间插入鲁棒分组来生成双TS流; 用于随机化双TS流的随机化器; 一种填充字节交换器,用于将随机化数据流的填充字节替换为预定的已知数据; 以及用于对已知数据插入到其中的数据流进行编码的编码器。 因此,本发明根据从接收侧接收到的信号检测已知数据,并使用检测到的已知数据进行同步和均衡,从而可以在恶劣的多径信道下提高数字广播接收性能。