Multiple Descriptions and Path Diversity for Voice Communications Over Wireless Mesh Networks

Adaptive Aggregation of Voice over IP in Wireless Mesh Networks

not my own work has been identified and no material is included for which a degree has previously been conferred. Abstract When using Voice over IP (VoIP) in Wireless Mesh Networks the overhead induced by the IEEE 802.11 PHY and MAC layer accounts for more than 80% of the channel utilization time, while the actual payload only uses 20% of the time. As a consequence, the Voice over IP capacity i...

Low-latency wireless video over 802.11 networks using path diversity

Wireless local area networks, such as 802.11b, are becoming widespread as they provide simple wireless connectivity and data delivery. This paper examines low-latency (conversational) video communication over 802.11b networks. The challenges to enable low-latency video include overcoming the highly variable delays, losses, and bandwidth of 802.11b wireless networks. To overcome these challenges...

Wireless Mesh Networks for Public Safety and Disaster Recovery Communications

Recent events have revealed significant shortcomings in Public Safety and Disaster Recovery (PSDR) communications. A lot of currently deployed PSDR communication technology suffers from lack of interoperability and reliability in disaster scenarios. Furthermore, even the most advanced PSDR communication systems do not provide true broadband capabilities to support bandwidth intensive applicatio...

Multiple Antenna Techniques for Wireless Mesh Networks

Path Diversity and Multiple Descriptions with Rate Dependent Packet Losses

Simple path diversity, where the source packet is transmitted simultaneously over multiple paths, is an effective method to combat packet losses or link failures for communications over a wireless network. The bandwidth inefficiency inherent in a path diversity method can be reduced by using multiple description (MD) coding. We consider a scenario where two independent parallel paths/links are ...