Paper Info
Title
Distortion-optimized FEC for unequal error protection in MPEG-4 video delivery
Abstract
In this work, we present a distortion-based erasure code for realizing unequal error protection in video delivery services. Prior to transmission, the resulting distortion caused by packet erasure is estimated for each of the video packets. This Information Is used to protect the video packets with higher distortion values strongly, whereas video packets with very low distortion values are not worth being protected. We present a local search algorithm that delivers near-optimal parity codes which minimize the expected overall distortion at the receiver. Furthermore, we suggest the deployment of our FEC erasure code at video proxies located at the edge to access networks with high packet erasure rates (e.g. mobile networks). This helps detecting and correcting packet losses efficiently, by tailoring the error protection code characteristics to the observed packet erasure rate of the receiver. Our erasure code is a parity code and relics solely on XOR-operations for encoding and decoding; hence, it shows very high efficiency compared to other more sophisticated codes. Simulation results show that our introduced erasure code outperforms the classical Reed-Solomon erasure codes in terms of perceived video quality, while running considerably faster.
Year
DOI
Venue
2004
10.1109/ISCC.2004.1358607
ISCC
Keywords
Field
DocType
classical reed-solomon erasure code,mpeg-4 video delivery,video packet,high packet erasure rate,observed packet erasure rate,erasure code,near-optimal parity code,unequal error protection,error protection code characteristic,packet erasure,distortion-optimized fec,fec erasure code,distortion-based erasure code,visual communication,local search algorithm,mobile network,forward error correction,distortion,minimisation,radio receivers,access network,video quality,reed solomon,packet loss,telecommunication services
Online codes,Forward error correction,Computer science,Network packet,Binary erasure channel,Computer network,Video quality,Distortion,Erasure code,Erasure
Conference
ISSN
ISBN
Citations 
1530-1346
0-7803-8623-X
0
PageRank 
References 
Authors
0.34
4
2
Name
Order
Citations
PageRank
I. Bouazizi1211.51
M. Gunes200.34