摘要
ＡＴＭ网络中传输视频信号存在的信元丢失会严重影响接收图象的质量，可以从视频编解码端与ＡＴＭ适配层采取抗信元丢失技术以减少该影响。不同ＡＡＬ有不同的抗信元丢失原理。本文分别对用ＡＡＬ１，ＡＡＬ２，ＡＡＬ５适配ＭＰＥＧ—２视频信号时在ＡＡＬ层采取的抗信元丢失技术进行了分析。
The cell loss of video transport over ATM network degrades the received image quality seriously.Cell loss concealing techniques can be adopted at codec and AAL.The priciples of cell loss concealing technique are different with AAL from each other.The techniques are analysed respectively when adapting MPEG 2 video by AAL1,AAL2,and AAL5.
出处
《电讯技术》
EI
北大核心
1997年第5期18-23,共6页
Telecommunication Engineering
