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    • 3. 发明授权
    • Digital broadcast transmitter/receiver having an improved receiving performance and signal processing method thereof
    • 具有改进的接收性能的数字广播发射机/接收机及其信号处理方法
    • US08537918B2
    • 2013-09-17
    • US12262773
    • 2008-10-31
    • Eui-jun ParkYong-sik KwonJoon-soo KimJung-pil YuJin-hee JeongKum-ran JiJong-hun Kim
    • Eui-jun ParkYong-sik KwonJoon-soo KimJung-pil YuJin-hee JeongKum-ran JiJong-hun Kim
    • H04L5/12
    • H04N21/2383H03M13/253H03M13/2936H04H60/07H04L1/0065H04L25/03286H04N21/23611H04N21/4346H04N21/4382
    • A digital broadcast transmitting/receiving system, and a signal processing method thereof, includes a randomizer for randomizing a transport stream into a specified position of which stuff bytes are inserted, a stuff-byte exchanger for replacing the stuff bytes included in data output from the randomizer with specified known data, an RS encoder for performing an RS-encoding of data output from the stuff-byte exchanger, an interleaver for interleaving data output from the RS encoder, a trellis encoder for performing a trellis encoding of data output from the interleaver, an RS parity generator for generating a parity by performing an RS encoding of data output from the RS encoder, and outputting the generated parity to the trellis encoder, and a modulator/RF converter for modulating data output from the trellis encoder and performing an RF up-converting of the modulated data. The digital broadcast receiving performance can be improved even in an inferior multi-path channel by detecting the known data from the received signal and using the known data for synchronization and equalization in a digital broadcast receiver.
    • 数字广播发送/接收系统及其信号处理方法包括随机化器,用于将传输流随机化到插入了填充字节的指定位置;填充字节交换器,用于替换包含在 具有指定已知数据的随机化器,用于执行从填充字节交换器输出的数据的RS编码的RS编码器,用于交织从RS编码器输出的数据的交织器,用于执行从交织器输出的数据的网格编码的网格编码器 RS奇偶校验发生器,用于通过对从RS编码器输出的数据进行RS编码,并将产生的奇偶校验输出到网格编码器来产生奇偶校验;以及调制器/ RF转换器,用于调制从网格编码器输出的数据并执行RF 调制数据的上变频。 通过从接收到的信号中检测已知的数据,并在数字广播接收机中使用已知的数据进行同步和均衡,即使在较差的多路径信道中也可以提高数字广播接收性能。