Influence of Propagation Modeling on VoIP Quality Performance in Wireless Mesh Network Simulation

In this paper we evaluate the influence of radio propagation modeling on VoIP quality in wireless network simulations. How propagation modeling can influence classification of strategies concerned in improving VoIP quality? We analyze reactive AODV and proactive OLSR approaches in a simulated 802.11 mesh backbone and calculate the VoIP quality by means of a reviewed version of ITU-TE-Model. Results showed that: a) irrespective of routing strategy, different propagation model configurations can influence speech quality in such a way that it switches from "acceptable" to "unacceptable", b) the classification of such strategies can be highly influenced by propagation models as well as its configurations.