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Optimal Packet Scheduling for Wireless Video Streaming with Error-Prone Feedback

Summary: Optimal Packet Scheduling for Wireless Video
Streaming with Error-Prone Feedback
Dihong Tian, Xiaohuan Li, Ghassan Al-Regib, Yucel Altunbasak, and Joel R. Jackson
School of Electrical and Computer Engineering
Georgia Institute of Technology
Atlanta, GA 303320250
Abstract-- In wireless video transmission, burst packet errors
generally produce more catastrophic results than equal number
of isolated errors. To minimize the playback distortion, it is
crucial for the sender to know the packet errors at the receiver
and then optimally schedule next transmissions. Unfortunately, in
practice, feedback errors result in inaccurate observations of the
receiving status. In this paper, we develop an optimal scheduling
framework to minimize the expected distortion by first estimating
the receiving status. Then, we jointly consider the source and
channel characteristics and optimally choose the packets to
transmit. The optimal transmission strategy is computed through
a partially observable Markov decision process. The experimental
results show that the proposed framework improves the average
peak signal-to-noise ratio (PSNR) by 0.6-1.3dB upon using a


Source: Altunbasak, Yucel - School of Electrical and Computer Engineering, Georgia Institute of Technology


Collections: Engineering