基于增强FIR滤波器的MPEG2传输流时钟同步模块的性能评价

2009 International Multimedia, Signal Processing and Communication Technologies Pub Date : 2009-01-23 DOI:10.1145/1523103.1523167

Monika Jain, A. Jain, P. Jain, Sharad Jain

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引用次数: 2

摘要

现有的机顶盒在地面环境下由于多径反射会产生很大的抖动。现有实现DVB-T时钟恢复的算法依赖于非常复杂的计算，不适合实时数据处理。在数字机顶盒中，大部分CPU带宽用于音频和视频数据解码，因此时钟同步算法的CPU执行时间非常少。提出了一种低成本的加权滤波方法来解决数字机顶盒中的色彩损失问题。该算法已在实际卫星和地面环境中进行了测试。将其性能与基于线性回归的算法进行了比较，显示出明显的优势。

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Performance evaluation of enhanced FIR filter based module for clock synchronization in MPEG2 transport stream

Existing Set-Top Boxes experiences very large jitter in terrestrial environment due to multi path reflections. Existing algorithms for achieving clock recovery for DVB-T relies on very complex calculations which are not suitable for real time data processing. In digital Set-top box most of the CPU bandwidth is consumed in audio & video data decoding so clock synchronization algorithms get very less CPU time to execute. This paper presents Low cost weighing filter approach to solve the color loss problem in Digital Set-top Box. This algorithm has been tested in practical satellite and terrestrial environment. Its performance has been compared with Linear Regression based algorithm and shows distinct advantages.

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2009 International Multimedia, Signal Processing and Communication Technologies

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