Improving Mean Opinion Score (MOS) of VoIP in WiMAX System by Using an Efficient Technique

VoIP is Voice over Internet Protocol which is a real time application which allows transmitting voice through internet protocol. It provides various services from which one of the important services is phone service over dedicated IP network. The important quality which is perceived by the users of VoIP telephony is speech quality. The quality of speech is degraded by various factors such as packet loss, delay, jitter, etc. This paper concentrate in making better speech quality and to improve the MOS score by using standard PESQ over WIMAX system. Tool used for this purpose is MATLAB R2013b.