Paper Info
Title
A Csi And Rate-Distortion Based Packet Loss Recovery Algorithm For Voip
Abstract
Packet loss affects the received speech quality greatly in VoIP (Voice over Internet Protocol) applications. PCM (Pulse Code Modulation) coders are often used for VoIP and also face such problems. In this paper, a packet loss recovery algorithm is proposed based on CSI (Coding with Side Information) and Rate-Distortion optimization. Two virtual reconstruction methods are implemented for every voiced packet with side information at the sender endpoint. Rate-Distortion optimization is used to select the proper recovery method which has the lowest cost considering both the distortion and rate. At the receiver endpoint, the lost packets will be recovered with the selected recovery method. Simulation results show that the speech quality over IP network is improved dramatically at the price of only a low bandwidth consumption with the proposed method.
Year
DOI
Venue
2008
10.1109/CHINSL.2008.ECP.71
2008 6TH INTERNATIONAL SYMPOSIUM ON CHINESE SPOKEN LANGUAGE PROCESSING, PROCEEDINGS
Keywords
Field
DocType
VoIP, packet loss, CSI, Rate-Distortion
Pulse-code modulation,Synchronization,Computer science,Network packet,Packet loss,Algorithm,Internet protocol suite,Computer network,Real-time computing,Bandwidth (signal processing),Distortion,Voice over IP
Conference
Citations 
PageRank 
References 
0
0.34
5
Authors
4
Name
Order
Citations
PageRank
Zhongbo Li131.11
Shenghui Zhao23314.29
Jing Wang31038105.16
Jingming Kuang438860.48