Adaptive Jitter buffer algorithm of VoIP based on speech quality prediction
Wu Xing · Computer Engineering and Applications Journal · 2011
Jitter buffering is an effective method to combat the delay jitter problems in Voice over IP(VoIP) systems.To adjust the jitter buffer dynamically and achieve better quality of VoIP,an adaptive jitter buffer algorithm based on speech quality prediction is proposed.This algorithm uses a Pareto distribution to model the delay and predicts the instantaneous speech quality under burst packet loss condition based on E-Model method.Then it adaptively selects the optimal jitter buffer size to maximize the predicted value of speech quality.The simulation results demonstrate that the proposed algorithm outperforms existing algorithms and improves the speech quality of VoIP system effectively.