Filters








283 Hits in 6.1 sec

A timestamp-sensitive scheduling algorithm for MPEG-II multiplexers in CATV networks

Ying-Dar Lin, Chun-Mo Liu
1998 IEEE transactions on broadcasting  
To achieve smooth display of MPEG-11 programs in the residential cable TV networks, we present a timestamp-sensitive scheduling algorithm for MPEG-XI multiplexers.  ...  This algorithm is compared numerically with the timestamp-insensitive algorithm which runs constant-bit-rate (CBR) scheduling.  ...  Acknowledgement The authors would like to thank Mentor Data System Corp. at Science-based Industrial Park, Hsinchu, Taiwan, for providing MPEG-I1 trace programs and technical advice on MPEG-I1 multiplexers  ... 
doi:10.1109/11.715321 fatcat:iqr7znau6ffk7ctkp72ujojoau

On statistical multiplexing of variable-bit-rate video streams in mobile systems

Cheng-Hsin Hsu, Mohamed Hefeeda
2009 Proceedings of the seventeen ACM international conference on Multimedia - MM '09  
We propose an approximation algorithm for the base station to statistically multiplex and transmit multiple VBR streams to achieve these objectives.  ...  We consider the problem of broadcasting multiple variable-bit-rate (VBR) video streams from a base station to many mobile devices over a wireless network, so that: (i) perceived quality on mobile devices  ...  Creating optimal burst schedules is NP-hard, and thus we propose an approximation, real time, algorithm for the base station to statistically multiplex and transmit multiple VBR streams to achieve most  ... 
doi:10.1145/1631272.1631329 dblp:conf/mm/HsuH09 fatcat:rjq5jdp5rjhspa3blfpabnsng4

Efficient traffic prediction scheme for real-time VBR MPEG video transmission over high-speed networks

Sang-Jo Yoo
2002 IEEE transactions on broadcasting  
The efficient transportation of real-time variable bit rate (VBR) video traffic in high-speed networks is currently an active area of research.  ...  This paper proposes an adaptive traffic prediction method for VBR MPEG videos, a major multimedia application.  ...  Multiplexed Video Traffic Prediction Let be the bit rate of the th frame time in a multiplexed MPEG video stream.  ... 
doi:10.1109/11.992849 fatcat:zt3xraxhhrabdis2u5tegs5tk4

RED-VBR: a renegotiation-based approach to support delay-sensitive VBR video

Hui Zhang, Edward W. Knightly
1997 Multimedia Systems  
In this paper, we propose a new service called REnegotiated Deterministic Variable Bit Rate Service RED-VBR that attempts to strike an e cient balance with the above tradeo s.  ...  We i n troduce a connection admission control algorithm for RED-VBR which bounds the renegotiation failure probability.  ...  There are three important t ypes of tra c for future integrated services networks: constant bit rate or CBR tra c, delay-sensitive variable bit rate or VBR tra c, and best-e ort tra c.  ... 
doi:10.1007/s005300050053 fatcat:5mba4g7mqfbdrdek4huibdvv4m

User-oriented QoS in packet video delivery

O. Verscheure, X. Garcia, G. Karlsson, J.-P. Hubaux
1998 IEEE Network  
We focus on packet video delivery, with an emphasis on the quality of service perceived by the end-user.  ...  A truly integrated network will have t o cope with di erent tra c characteristics and quality requirements in terms of delay, delay jitter and data loss.  ...  Two of these, syntactic protection and layered coding, reduce loss sensitivity. Another algorithm, adaptive quantization, increases video quality without modifying the average bit rate.  ... 
doi:10.1109/65.752641 fatcat:ltl5bscduva3fiwxdip3hhj4g4

An adaptive random-reservation MAC protocol to guarantee QoS for ATM over satellite [chapter]

T. Örs, Z. Sun, B. G. Evans
1998 Broadband Communications  
), real-time Variable Bit Rate (rt VBR), non-real-time VBR (nrt VBR) and Unspecified Bit Rate (UBR).  ...  In this paper we analyse the performance of an Adaptive Random-Reservation Medium Access Control (MAC) protocol which can support all A TM service classes while providing the required Quality of Service  ...  The MAC packet slot period has been chosen to support a 32 kbit/s CBR stream and corresponds to one frame unit of 384 on-coded information bits every uplink frame.  ... 
doi:10.1007/978-0-387-35378-4_9 fatcat:xdgxmvmg2vdjdm24ogxe7jbagi

Fixed Versus Adaptive Admission Control in Direct Broadcast Satellite Networks With Return Channel Systems

F. Alagoz, B.R. Vojcic, D. Walters, A. AlRustamani, R.L. Pickholtz
2004 IEEE Journal on Selected Areas in Communications  
In order to maximize the resource utilization, both for fixed and adaptive approaches, assignment of the VBR services are determined based on the estimated statistical multiplexing and other system attributes  ...  The traffic mix in the simulator includes both available bit rate (ABR) traffic and variable bit rate (VBR) traffic.  ...  The adaptive admission control algorithm is intentionally designed to apply an aggressive multiplexing strategy that might often lead to overloads due to mises-timated soft margin, which is mitigated by  ... 
doi:10.1109/jsac.2003.819972 fatcat:opzairqy55hnvblzujjuv4y44a

Rate control for VBR video coders in broad-band networks

H. Hamdi, J.W. Roberts, P. Rolin
1997 IEEE Journal on Selected Areas in Communications  
The algorithm avoids unpredictable rate variations without the rigidity and systematic coding delay of constant bit-rate (CBR) coders, and makes possible resource provision for guaranteed quality of service  ...  Index Terms-ATM networks, MPEG, quality of service guarantee, scales of congestion, shaping, statistical multiplexing, VBR video.  ...  Controlled Burstiness VBR Coding As discussed in Section II, to efficiently multiplex VBR video streams requires the knowledge of traffic parameters describing the rate variations.  ... 
doi:10.1109/49.611158 fatcat:mmdmdfqyezcyjflqhh2d2h3syu

Efficient mobile multimedia streaming

Cheng-Hsin Hsu
2010 ACM SIGMultimedia Records  
This is because the SMS algorithm quickly adapts to the instantaneous bit rate variations of VBR streams.  ...  Sharing the network bandwidth among multiple VBR streams achieves statistical multiplexing, and the increase in number of video streams that can be broadcast at a given target video quality by VBR coding  ...  The SMS ′ Algorithm 1. // Input: multiple VBR streams. 2 . // Output: burst transmission schedule for all bursts. 3 . // initial transform 4 . for s = 1 to S 5.  ... 
doi:10.1145/1874413.1874417 fatcat:ag37drot2rcrzpbj3juxknlxn4

Statistical Time-Frequency Multiplexing of HD Video Traffic in DVB-T2

Mehdi Rezaei, Imed Bouazizi, Moncef Gabbouj
2009 International Journal of Digital Multimedia Broadcasting  
It introduces an optional time-frequency slicing (TFS) transmission scheme to increase the flexibility of service multiplexing.  ...  Digital video broadcast-terrestrial 2 (DVB-T2) is the successor of DVB-T standard that allows a two-dimensional multiplexing of broadcast services in time and frequency domains.  ...  Acknowledgment This work was partially supported by Nokia and the Academy of Finland, Project no. 213462 (Finnish Centre of Excellence program 2006-2011).  ... 
doi:10.1155/2009/186960 fatcat:ofbqslrzb5g2vixedalk45gsdy

Video Streaming in Evolving Networks under Fuzzy Logic Control [chapter]

Martin Fleury, Emmanuel Jammeh, Rouzbeh Razavi, Sandro Moiron, Mohammed Ghanbari
2010 Trends in Telecommunications Technologies  
It is finally suitable for the engineers and other interested people that would benefit from an overview of ideas, experiments, algorithms and techniques that are presented throughout the book.  ...  It is also useful for educators that wish to get an up-to-date glimpse of telecommunications research and present it in an easily understandable and concise way.  ...  Consequently, multiple video streams as part of an IPTV service can each be adaptively allocated a proportion of the bandwidth capacity according to their content complexity.  ... 
doi:10.5772/8490 fatcat:aoenob3nc5fkzmogsxj2dtn2ta

Modeling one- and two-layer variable bit rate video

K. Chandra, A.R. Reibman
1999 IEEE/ACM Transactions on Networking  
This paper presents a source model for variable bit rate (VBR) video traffic.  ...  The VBR video model is also used to model the enhancement layer of two-layer SNR scalable video.  ...  Heyman (AT&T) for his valuable discussions in the revision of this work and the reviewers for their feedback which strengthened the paper.  ... 
doi:10.1109/90.779209 fatcat:q6i22qn455fejj5yalqkggxxay

Transporting compressed video over ATM networks with explicit-rate feedback control

T.V. Lakshman, P.P. Mishra, K.K. Ramakrishnan
1999 IEEE/ACM Transactions on Networking  
We propose a scheme for transmission of variable bit rate (VBR) compressed video for interactive applications using the explicit-rate congestion-control mechanisms proposed for the available bit rate (  ...  We also look at the sensitivity of the proposed scheme to the estimates of the network round-trip times and to inaccuracies in the rate requests made by sources.  ...  Convergence Delays of the Allocation Algorithm The distributed rate allocation algorithm achieves max-min fairness by an iterative process.  ... 
doi:10.1109/90.803385 fatcat:iswxa6iqyvbfni3nyqp4vlszhq

Scene-Change Aware Dynamic Bandwidth Allocation for Real-Time VBR Video Transmission Over IEEE 802.15.3 Wireless Home Networks

Yi-Hsien Tseng, E.H.-K. Wu, Gen-Huey Chen
2007 IEEE transactions on multimedia  
Using the prediction results of VSSNLMS, we propose a dynamic bandwidthallocation scheme that is scene-change aware and can guarantee the delay bound of real-time VBR videos.  ...  Dynamic bandwidth allocation for a multimedia connection should be considered in order to achieve higher channel utilization, less buffer and less delay, especially for variable bit rate (VBR) multimedia  ...  So, we apply the modified algorithm as our VBR video predictor. The VSSLMS algorithm was originally intended for reducing the sensitivity of the misadjustment to the level of nonstationarity.  ... 
doi:10.1109/tmm.2006.888019 fatcat:rc6il5pwvnhrfbp7z4nhdepjnu

An adaptable neural-network model for recursive nonlinear traffic prediction and modeling of MPEG video sources

A.D. Doulamis, N.D. Doulamis, S.D. Kollias
2003 IEEE Transactions on Neural Networks  
The scheme is based on an efficient recursive weight estimation algorithm, which adapts the network response to current conditions.  ...  In particular, the algorithm updates the network weights so that 1) the network output, after the adaptation, is approximately equal to current bit rates (current traffic statistics) and 2) a minimal degradation  ...  full motion VBR video stream.  ... 
doi:10.1109/tnn.2002.806645 pmid:18237998 fatcat:x7lwm4pxbvgl7h3cyobxnefgzm
« Previous Showing results 1 — 15 out of 283 results