000000061 001__ 61
000000061 005__ 20190316233045.0
000000061 037__ $$aCONF
000000061 245__ $$aNew Network and ATM Adaptation Layers for Real-Time Multimedia Applications: A Performance Study Based on Psychophysics
000000061 269__ $$a1996
000000061 260__ $$c1996
000000061 336__ $$aConference Papers
000000061 520__ $$aWe present in this paper Network and ATM Adaptation Layers for real-time multimedia applications. These layers provide a robust transmission by applying per-cell sequence numbering combined with a selective Forward Error Correction (FEC) mechanism based on Burst Erasure codes. We compare their performance against a transmission over AAL5 by simulating the transport of an MPEG-2 sequence over an ATM network. Performance is measured in terms of Cell Loss Ratio (CLR) and user perceived quality. The proposed layers achieve an improvement on the cell loss figures obtained for AAL5 of about one order of magnitude under the same traffic conditions. To evaluate the impact of cell losses at the application level, we apply a perceptual quality measure to the decoded MPEG-2 sequences. From a perceptual point of view, the proposed AAL achieves a graceful quality degradation compared to AAL5 which shows a critical CLR value beyond which quality drops very fast. The application of a selective FEC achieves an even smoother image quality degradation with a small overhead.
000000061 6531_ $$aATM Adaptation Layer
000000061 6531_ $$aNetwork Adaptation Layer
000000061 6531_ $$aReal-Time Multimedia Applications
000000061 6531_ $$aMPEG-2
000000061 6531_ $$aPerceptual Quality Metric
000000061 700__ $$aGarcia, X.
000000061 700__ $$aVerscheure, O.
000000061 700__ $$0240456$$aHubaux, Jean-Pierre$$g105427
000000061 7112_ $$aCOST 237 Workshop
000000061 773__ $$tCOST 237 Workshop
000000061 8564_ $$s1296125$$uhttps://infoscience.epfl.ch/record/61/files/GarciaVH96.pdf$$zn/a
000000061 909C0 $$0252614$$pLCA$$xUS00024
000000061 909C0 $$0252452$$pLCA1$$xU10426
000000061 909CO $$ooai:infoscience.tind.io:61$$pconf$$pIC$$qGLOBAL_SET
000000061 937__ $$aLCA-CONF-1996-013
000000061 970__ $$a174/LCA
000000061 973__ $$aEPFL$$sPUBLISHED
000000061 980__ $$aCONF