Subset selection in type-II hybrid ARQ/FEC for video multicast

Authors:
S. Mohsen Amiri;Ivan V. Bajić
Affiliations:
School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada;School of Engineering Science, Simon Fraser University, Burnaby, BC, Canada
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

Citing 4
Cited 0

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Abstract

This paper proposes an error control scheme that minimizes the total distortion experienced by the receivers using a new version of Type-II hybrid ARQ/FEC. Based on the feedback information about the losses in the previous Group of Pictures (GOP), the server sends parity packets for a subset of the frames from that GOP with the aim of minimizing the total distortion experienced by the receivers. The subset selection problem is NP-hard, so we propose a suboptimal method to solve it based on simulated annealing. Experimental results for the case when a single parity packet is used per group of 16 packets show that the proposed subset selection improves the plain Type-II hybrid ARQ/FEC by over 4 dB in decoded video PSNR, and achieves a 1-1.5 dB gain compared to a state-of-the-art error control method based on rate-distortion optimized frame retransmission.