Multirate voice coding for load control on CSMA/CD local computer networks
WSC '85 Proceedings of the 17th conference on Winter simulation
Cross-layer QoS control for video communications over wireless ad hoc networks
EURASIP Journal on Wireless Communications and Networking
Gauging VoIP Call Quality from 802.11 WLAN Resource Usage
WOWMOM '06 Proceedings of the 2006 International Symposium on on World of Wireless, Mobile and Multimedia Networks
Toward scalable admission control for VoIP networks
IEEE Communications Magazine
IEEE Communications Magazine
Standardization of the AMR wideband speech codec in 3GPP and ITU-T
IEEE Communications Magazine
IEEE Communications Magazine
Performance characterization of VMR-WB, the cdma2000 wideband speech codec
IEEE Communications Magazine
Review: VoIP: State of art for global connectivity-A critical review
Journal of Network and Computer Applications
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The main purpose of this paper is to present a simulation model for the performance evaluation of Adaptive Rate Control for VoIP on Wireless Ad Hoc Networks. We use OPNET simulation to capture the characteristics of wireless channel and implement the speech coding standard AMR-WB. The basic idea of our rate control scheme is to adapt the voice coding bit rate to the available network bandwidth in order to maximize the quality of voice. The MOS value is evaluated by PESQ for the adaptive rate control. We designed the ad hoc and adaptive control model to simulate our scheme. The simulation results have confirmed the effectiveness of this scheme.