Zhang, Hongqi2013-11-072013-11-0720072007Source: Masters Abstracts International, Volume: 47-06, page: 3723.http://hdl.handle.net/10393/27943http://dx.doi.org/10.20381/ruor-12323The objectives of this thesis are to study the performance of voice over IP in ad-hoc networks, and to study the relationship among routing protocols, coding schemes and the quality of voice. The contribution is an adaptive rate control scheme which uses Mean Opinion Score (MOS) as criteria to improve the performance of the mobile ad hoc network. We first discuss and analyze the characteristics of wireless ad hoc network and Adaptive Multirate-Wideband (AMW) speech coding, and then provide the operation of the adaptive source-network rate control scheme consisting of the voice coding and transmission control, adaptive network rate control, the source rate control, and the frame combination. We implement the scheme in a test-bed and test the performance of speech in different scenarios using Multi-path Source Routing (MSR). Finally, we verify our testbed measurements with OPNET simulation.114 p.enEngineering, Electronics and Electrical.Thesis