Scalable feedback control for multicast video distribution in the Internet
SIGCOMM '94 Proceedings of the conference on Communications architectures, protocols and applications
Best-effort versus reservations: a simple comparative analysis
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
Speech Coding and Synthesis
A dynamic rate control mechanism for source coded traffic in a fast packet network
IEEE Journal on Selected Areas in Communications
Fundamental design issues for the future Internet
IEEE Journal on Selected Areas in Communications
Time Synchronization for VoIP Quality of Service
IEEE Internet Computing
Hybrid multimode/multirate CS-ACELP speech coding for adaptive voice over IP
Speech Communication
adaMOS: MOS-adaptive VoIP sources
WebMedia '06 Proceedings of the 12th Brazilian Symposium on Multimedia and the web
System/network design-space exploration based on TLM for networked embedded systems
ACM Transactions on Embedded Computing Systems (TECS)
Modeling the qoe of rate changes in SKYPE/SILK VoIP calls
Proceedings of the 20th ACM international conference on Multimedia
Survey on application-layer mechanisms for speech quality adaptation in VoIP
ACM Computing Surveys (CSUR)
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This paper presents simulation results outlining the behavior of rate-adaptive voice communications over IP networks. In the considered architecture, voice coders adapt their rate to the current state of the network so as to generate only the bandwidth that the network is capable of carrying. An algorithm is proposed for driving the transmission rate of voice sources on the basis of estimations of the network conditions, measured in terms of packet delays and losses. The effectiveness of the proposed solution is then investigated in various scenarios which comprise: (i) a dedicated network in which the available bandwidth is exclusively shared between adaptive voice connections; (ii) a scenario in which adaptive voice sources compete with other TCP-like sources; and (iii) an uncontrolled network environment. We have compared the performance of the rate-adaptive against the non-adaptive (i.e. fixed-rate) approach for the transport of voice over IP. Using a rate-adaptive approach, more voice communications can be carried while maintaining a good quality of service, even on non-segregated networks.