G. Morrison and D. Beaumont, "Two-Level Video Coding for ATM Networks," Signal Processing: Image Communication, vol. 3, p179-195, June 1991.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....approach for splitting MPEG bitstreams similar to data partitioning [12] while Ismail et al. 13] examine modeling MPEG 2 data partitioning using TES. However, both of these assume that the base layer is VBR, which is a problem for CAC and UPC on the important base layer. Earlier work [14], 15] 16] suggests that the overhead incurred by two layer coding is large enough to offset any gains in improved cell loss resilience. However, these studies are based on less efficient compression algorithms than are currently standardized in MPEG 2. In this work, we focus on modeling SNR ....

G. Morrison and D. Beaumont, "Two-Level Video Coding for ATM Networks," Signal Processing: Image Communication, vol. 3, p179-195, June 1991.

....important base layer. While CAC and UPC are important for a VBR enhancement layer as well, they are more vital, and hence more difficult to do well, for a VBR base layer because IEEE ACM Trans. Networking v7, 3) p398 413, June 1999 3 the required cell loss rate is more stringent. Earlier work [17], 18] 19] suggests that the overhead incurred by twolayer coding is large enough to offset any gains in improved cell loss resilience. However, these studies are based on less efficient compression algorithms than are currently standardized in MPEG 2. Furthermore, despite the prevailing ....

....video. 5. MODELING TWO LAYER VIDEO Here, we adapt the single source model described in the previous section for VBR video to model the enhancement layer of a two layer video encoder. Our primary goal is to explore the relative efficiency of transporting one and two layer video. Early results [17,18,19] indicated that while two layer video could withstand higher cell loss rates than one layer video, its overhead bitrate was large enough that it still had worse multiplexing performance. However, the two layer compression algorithm used in this paper is more efficient, and hence may have higher ....

G. Morrison and D. Beaumont, "Two-Level Video Coding for ATM Networks," Signal Processing: Image Communication, vol. 3, p179-195, June 1991.

....algorithm will be used for the control performance evaluation. For many real time applications like voice and video, the source input can naturally be partitioned into packets of different priorities; the high priority packets themselves may provide a sufficient approximation to the original input [18, 19]. For the best quality of services, no high priority packets should be blocked unless all the lower priority packets have been discarded. If the loss only occurs among the low priority packets, the network congestion will have the minimum impact on service qualities [20] Obviously, by a proper ....

....to effectively reduce L 0 . Finally, we want to examine the effect of (K 1 ; 1 ; BW 1 ) on the loss rate spectrum of the high priority packets, denoted by P H ( For real time applications like voice and video, the high priority packets often contain the primary information of input traffic [18, 19]. The study of P H ( will then help us understand the correlation behavior of consecutive high priority packet loss. Since the high priority packets can only be dropped by buffer blocking, the definition of P H ( is very 0.001 0.01 0.1 20 80 120 160 200 0 10 20 28 0.0001 80 120 160 10 20 28 ....

G. Morrison and D. Beaument, "Two-Level Video Coding for ATM Networks, " Singal Processing: Image Communication, June 1991, pp. 179-195.

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