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His main research interests are in the field of IPTV over WiMAX networks and modeling the behavior of IPTV users. He is also a faculty member in the Bernd E. Wolfinger has been a Professor of Computer Science at University of Hamburg since 1981, where he is currently heading the Telecommunications and Computer Networks (TKRN) Subdivision. He has been editor(More)
The paper proposes a congestion control protocol based on Network Coding (NC) operations for the butterfly topology. The proposed protocol defines XOR-based coding and decoding algorithms adapted to streams having different rates and characteristics, as well as a signalling protocol required for dynamic activation and deactivation of NC operations. Some(More)
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