Thumbnail
Access Restriction
Subscribed

Author Sgardoni, V. ♦ Ferre, P. ♦ Nix, A. ♦ Bull, D.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2009
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics
Subject Keyword Robustness ♦ Multimedia communication ♦ Broadcasting ♦ Fading ♦ Streaming media ♦ Handheld computers ♦ Protocols ♦ Video sequences ♦ Forward error correction ♦ Error correction
Abstract In order to deliver video streams efficiently over WiFi to many thousands of consumer handheld devices, broadcast protocols must be employed. In this mode of operation the received video quality can deteriorate rapidly as a result of high application layer packet loss which occurs because MAC frame retransmission cannot be used. In this paper we develop a robust video solution that is used in conjunction with broadcast transmission over 802.11a/g. Using a cross-layer WiFi simulator in combination with an accurate time-correlated fading channel, the received video quality is evaluated for broadcast H.264 video sequences. Application layer cross-packet forward error correction is then used together with error concealment at the video client. The methods developed can be used to successfully broadcast video to many thousands of handheld terminals at large-scale spectator events.
Description Author affiliation: Centre for Communication Research, University of Bristol, Woodland Road, BS8 1UB, U.K. (Sgardoni, V.; Ferre, P.; Nix, A.; Bull, D.)
ISBN 9781424447015
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-01-10
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 271.91 kB
Page Count 2
Starting Page 1
Ending Page 2


Source: IEEE Xplore Digital Library