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The success of P2P file sharing systems inspired the development of P2P streaming systems for delivering online multimedia service in the last few years. The capacity of P2P streaming systems, i.e., how many peers can be concurrently serviced by the system, depends on system configurations including network bandwidth, overlay network formation, QoS constraints, membership management, peer selection,...
The recent studies have shown that network coding can benefit peer-to-peer (P2P) content distribution network (CDN) since it eases the packet scheduling and balances the network load by utilizing peers' resources to code. But better coding performance costs increasing computation complexity and buffering space, which may result in higher delay and decoding failure. The situation will be worse if the...
With the popularity of VoIP, Push-To-Talk (PTT) services over the IP networks have gained their momentum. This research aims at essential design issues for the quality of service of PTT services. We explore the relationship between the speech quality and system design issues. MOS (Mean Opinion Score), which is raised by the ITU-T (International Telecommunication Union) as one of the most common benchmarks,...
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