摘要
在IP电话和远程会议系统等实时应用中 ,丢包不可避免并极大地影响传输服务质量 .前向误差校正法FEC(ForwardErrorCorrection)是实时修复丢包的一种较好的方法 .本文介绍了FEC丢包修复方法的原理 ,并把丢包修复功能结合到我们实现的实时传输协议RTP(Real timeTransportProtocol)库中 ,验证了丢包修复功能的正确性 .
In real-time applications, such as IP phones and remote conference systems, packet loss that impairs quality of transmitting severely is inevitable. FEC (Forward Error Correction) is a better way for repairing lost packets. A method of lost repairing with FEC based on RTP (Real-time Transport Protocol) was designed and implemented. Then a testing method of lost repairing function and results are illustrated.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第2期263-265,共3页
Acta Electronica Sinica
基金
高等学校博士点基金! (No .1 9990 1 831 9)
关键词
丢包修复
IP电话
远程会议系统
因特网
前向误差校正法
Database systems
Error correction
Network protocols
Packet networks
Real time systems
Repair
Teleconferencing
