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1. 发明申请

WO2009064147A2 DIGITAL BROADCASTING SYSTEM AND DATA PROCESSING METHOD IN DIGITAL BROADCASTING SYSTEM 审中-公开
标题翻译：数字广播系统中的数字广播系统和数据处理方法
公开(公告)号：WO2009064147A2
公开(公告)日：2009-05-22
申请号：PCT/KR2008006764
申请日：2008-11-17
申请人： LG ELECTRONICS INC , CHOI IN HWAN , HONG SUNG RYONG , KIM JAE HYUNG
发明人： CHOI IN HWAN , HONG SUNG RYONG , KIM JAE HYUNG
IPC分类号： H04N7/015 , H04N7/00
CPC分类号： H04H40/27 , H04H20/55 , H04L1/005
摘要： A receiving system and data processing method therein are disclosed, by which mobile service data is received and processed. The receiving system comprises a tuner, a filter, an IQ mismatch processor, a gain controller and a demodulator. The tuner tunes radio frequency (RF) signals of a specific channel which includes mobile service data and main service data, converts the tuned RF signals into zero IF signals and outputs the converted zero IF signals. The filter performs low pass filtering for the zero IF signals output from the tuner. The IQ mismatch processor estimates and compensates IQ mismatch generated in the zero IF signals filtered by the filter. The gain controller controls gain of the zero IF signals by estimating a gain error of the zero IF signals output from the IQ mismatch processor. The demodulator performs carrier recovery and timing recovery by receiving the zero IF signals output from the gain controller.
摘要翻译：公开了一种其中接收和处理移动业务数据的接收系统及其数据处理方法。接收系统包括调谐器，滤波器，IQ失配处理器，增益控制器和解调器。调谐器调谐包括移动业务数据和主业务数据的特定信道的射频（RF）信号，将调谐的RF信号转换为零中频信号并输出转换的零中频信号。滤波器对从调谐器输出的零中频信号进行低通滤波。 IQ失配处理器估计并补偿由滤波器滤波的零中频信号中产生的IQ失配。增益控制器通过估计从IQ失配处理器输出的零中频信号的增益误差来控制零中频信号的增益。解调器通过接收从增益控制器输出的零中频信号来执行载波恢复和定时恢复。

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