The rapid increase in the real-time streaming traffic motivates the development of more efficient methods of data transmission. Since packets have to be played in order at the receiver, we need to minimize the interruptions in playback in order to guarantee quality-of-service to the user. In particular, we consider the problem of minimizing playback delay in streaming over a packet erasure channel with fixed bandwidth. When packets have to be played in order, the expected delay inherently grows with time. We analyze two cases, namely no feedback and instantaneous feedback. We find that in both cases the delay grows logarithmically with the time elapsed since the start of transmission, and we evaluate the growth constant, i.e. the pre-log term, as a function of the transmission bandwidth (relative to the source bandwidth). Extensions include considering packet dropping, delayed feedback and streaming broadcast scenarios.
Gauri Joshi is currently a PhD student at Massachusetts Institute of Technology (MIT), USA. Her research interests are Probability, Stochastic Processes, Information Theory and Coding. She recently completed an M.S at MIT and won the Best Masters Thesis and Best Poster awards. Before joining MIT, Gauri received a B. Tech and M. Tech in Electrical Engineering from IIT Bombay in 2010 and was awarded the Institute Gold Medal.