On delay in real-time streaming communication systems
Author(s)Yao, Huan; Kochman, Yuval; Wornell, Gregory W.
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We focus on the problem of real-time streaming over a blockage channel with long feedback delay, as arises in real-time satellite communication from a comm-on-the-move (COTM) terminal. For this problem, we introduce a definition of delay that captures the real-time nature of the problem, which we show grows at least as fast as O(log(k)) for memoryless channels, where k corresponds to the number of packets in the transmission. Moreover, we show that a tradeoff exists between this delay and a natural notion of throughput that captures the bandwidth requirements of the communication. We develop and analyze an efficient “multi-burst” transmission protocol for achieving good delay-throughput tradeoffs within this framework, which we show can be augmented with coding for additional performance gains. Simulations validate the new protocols on channels with and without memory.
DepartmentLincoln Laboratory; Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Proceedings of the 48th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2010
Institute of Electrical and Electronics Engineers (IEEE)
Wornell, Gregory W. et al. "On delay in real-time streaming communication systems." Proceedings of the 48th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2010: 420-426. © 2010 IEEE.
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