摘要
就DVB/CMMB数字回波消除直放站研发中涉及的抗混频数字抽取滤波器这一关键技术进行了详细研究,对3种数字抽取滤波器(FIR,HBF,CIC)进行了简要介绍,对其实际性能进行了对比分析。最后,采用Matlab与FPGA硬件平台相结合的设计方法对性能最合适的FIR滤波器进行硬件实现、联合仿真、测试与验证,该设计方法极大优化了设计进程。
In this paper, the spectrum anti-mixing digital decimating filter, one of the key technologies during the research and development of digital echo cancelling repeater in DVB/CMMB networks, is studied in detail. Three types of digital decimating filter （FIR, HBF, CIC） are introduced, the actual performance of these three types decimating filters are also analyzed. Finally, a method using Matlab and FPGA is adopted to realize, simulate, test and verify the most suitable filter--FIR filter, and this method optimizes the design process mostly.
出处
《电视技术》
北大核心
2010年第2期7-9,13,共4页
Video Engineering
关键词
抽取滤波器
混频
回波消除
decimating filter
spectrum mixing
echo cancellation
