-- Performance Analysis of Mobile WiMAX NetworksVoIP over WiMAX capacity study.Handover and mobility management performance analysis.Design and implementation of 802.16e MAC layer features including ARQ, HARQ, packing/fragmentation, BW request/grant.Development and testing of 802.16e scheduling algorithms including round robin, proportionally fair, QoS aware.Customer experience visualization.Development of an online application visualizer using co-simulation.-- VoIP over WirelessTechnology development for voice quality enhancements in VoIP-over-wireless systems through various approaches.Design of a lightweight and reliable signaling protocol for voice engine configuration.-- Push-To-Talk over Cellular (PoC)Performance analysis for quality and capacity enhancements in PoC systems.Investigation of potential solutions for further performance improvements and capacity enhancements in current PoC systems.-- VoIP over Wi-Fi MeshDevelopment of a high quality reliable VoIP system over Wi-Fi mesh networks.Technology Development for capacity enhancements through various approaches.Development of an assessment tool for mesh capacity analysis.Specialties: -- Strong background in real-time communications, media transport, signaling, wireless networking, communication protocols and standards (VoIP, SIP, RTP/RTCP, TCP/IP, IPv6, Mobile IP, MANET, WiMAX, WLAN, wireless routing, 802.16, 802.11) (7+ yrs)-- Strong background in software development and object-oriented design using C/C++ and strong debugging skills using gdb (7+ yrs)-- Development of extensive sets of simulation models using C++-- Network simulation with OPNET, NS-2, GTNetS