Flexible and robust packet transport for digital HDTV

Siracusa, R.; Joseph, K.; Zdepski, J.; Raychaudhuri, Dipankar

doi:10.1109/49.210547

Cited by 14 publications

(5 citation statements)

References 7 publications

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“…The task of finding a suitable cfv, 6) pair, that approximates the empirical autocorrelation is carried out via a heuristic search using TEStool'* or by an automated optimization search. l9…”

Section: The Tes Modelling Methodologymentioning

confidence: 99%

Simulation and Modelling of Variable Bit Rate Mpeg Video Transmission Over Atm Networks

Ismail¹,

Lambadaris²,

Devetsikiotis³

et al. 1996

Int. J. Commun. Syst.

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This paper proposes an efficient transmission mechanism based on frame spreading, for variable bit rate (VBR) MPEG compressed video, through an asynchronous transfer mode (ATM) multiplexer, such as a cable head-end. We implement a priority scheme in a software MPEG encoder which produces proportionate traffic in both (i.e. high and low) priority partitions for all three types of video frames used in MPEG, i.e. intraframe (I), predicted (P) and bidirectionally interpolated (B). Furthermore, we simulate an ATM multiplexing scheme with a pushout buffer mechanism providing priority scheduling at the multiplexer for the two video partitions. We load the multiplexer with VBR MPEG traffic and collect performance statistics such as the cell loss ratios for various frame spreading scenarios. In order to study the transmission mechanisms via simulation, we develop two statistical models, using the transform-expand-sample technique (TES) for VBR MPEG video with two levels of priority. The first model is matched with the empirical histogram and autocorrelation function of each frame type (I, P and B). The second model is created with the assumption of a gamma distribution for the number of bits in each frame type. We conduct experiments using both models and compare the resu1ts.t KEY WORDS: VBR; MPEG; MPEG over ATM; TES model^^*.'^ remain an important part of any perform-His research interests include digital communications, high-speed networks, B-ISDN, and ATM systems modelling, performance evaluation, and efficient simulation, as well as optimization techniques applied to the analysis and design of communication systems.

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Section: The Tes Modelling Methodologymentioning

confidence: 99%

Simulation and Modelling of Variable Bit Rate Mpeg Video Transmission Over Atm Networks

Ismail¹,

Lambadaris²,

Devetsikiotis³

et al. 1996

Int. J. Commun. Syst.

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“…and then add a variable length, packet data unit (PDU) transport layer above it. Recently developed broadcast-oriented protocols such as MPEG++ (Siracusa et al 1993) and MPEG-2 Systems layer (MPEG-2 Systems Comittee 1993) may be used in place of a more general transport protocol in certain scenarios, generally at the expense of flexibility and additional processing cost. It is our view that, with the exception of TV broadcasting and derivative applications (e.g., simple VOD), it is preferable to define a video-specific AAL (traditionally known as AAL2) and apply a lightweight PDU-level protocol above it to support video, as well as other media required by the application, in an integrated manner.…”

Section: System Architecture Considerationsmentioning

confidence: 99%

Video transport in ATM networks: a systems view

Raychaudhuri¹,

Reininger²,

Siracusa³

1996

Multimedia Systems

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This paper presents a systems view of video transport issues in asynchronous transfer mode (ATM) networks. Since video is a critical component of future distributed multimedia applications, we consider technical approaches necessary to realize a flexible, robust, and efficient ATM framework for video delivery. The overall systemdesign problem is discussed for a general distributed multimedia computing scenario, and key video-related design issues are identified. This is followed by a more detailed discussion of selected ATM video topics, including: (1) variable bit-rate (VBR) statistical multiplexing and dynamic usage parameter control (VBR+), (2) ATM cell-loss concealment in MPEG decoders, and (3) new transport protocols ("MTP") for video and multimedia. Supporting simulation or experimental results from ongoing research are given where available.

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“…With advantages such as guaranteed quality of service (QoS) and statistical bandwidth sharing ( [5], [14], [22], [37], [38]), Asynchronous Transfer Mode (ATM) networks seem to be the most promising network architecture that may satisfy a wide variety of traffic types include real time variable bit rate (rt-VBR) sources [34]. However, buffer capacities at the switches are limited.…”

Section: Motivationsmentioning

confidence: 99%

“…This approach is known as source rate control [15] [26]. Data partitioning in [9], [32], and [38] was based on splitting the DCT (Discrete Cosine Transform) coefficients at some predetermined point resulting in two partitions of the bit-streams. Recently, adaptive data partitioning algorithms have been proposed.…”

Section: Previous Workmentioning

confidence: 99%