A congestion avoidance mechanism for enhancing performance of packet loss concealment in VoIP coders

Authors:
Jaesup Lee;Seung Ho Han;Won Ryu;Minsoo Hahn
Affiliations:
BcN Service Research Group, ETRI, Daejeon, Korea;School of Engineering, Information and Communications University, Daejeon, Korea;BcN Service Research Group, ETRI, Daejeon, Korea;School of Engineering, Information and Communications University, Daejeon, Korea
Venue:
ICECS'05 Proceedings of the 4th WSEAS international conference on Electronics, control and signal processing
Year:
2005

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Abstract

VoIP speech coders have PLC mechanisms to compensate for a packet loss. In this paper, various kinds of packet losses are designed. With these losses the PLC algorithms of speech coders are evaluated and analyzed by PESQ value. Based on these outcomes, reduction of loss rate is crucial, especially for VoIP. Thus, we suggest an enhanced congestion avoidance RED mechanism to enable PLC work better in reliable manner within its perceptual capabilities for VoIP service in the network.