System level performance evaluation of GPRS for various traffic models

Featherstone, W.; Molkdar, D.

doi:10.1109/vetecf.2000.886805

Cited by 6 publications

(3 citation statements)

References 3 publications

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“…Resynchronization markers are injected at a periodic rate of 800 bits. The coded enhancement sequence was then presented to a GPRS network simulator 1 [3] with a Frame Erasure Rate (FER) of 3% and Residual Bit Error Rate (RBER) of 0.047%. Fig.…”

Section: Resultsmentioning

confidence: 99%

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Syntax friendly and syntax amendment approaches to error resiliency in the MPEG-4 Simple Scalable Profile

Shanableh¹,

Reid²

2005

Signal Processing: Image Communication

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This work discusses two approaches to incorporating error resiliency in the Simple Scalable Profile SSP of the ISO/ IEC MPEG-4 14496-2 visual standard. As such scalable MPEG-4 is made suitable for deployment in a mobile communication environment. When it was defined in 2000, the syntax of the Simple Scalable Profile (SSP) prohibited the use of the error resiliency tools which were available in the base layer of the MPEG-4 codec. GPRS simulations are employed to illustrate the need for error resiliency in the SSP profile. Two solutions are then proposed based on whether or not bitstream syntax modifications are employed. The first solution is syntax friendly and emulates the use of the Video Packet resiliency tool whilst remaining compliant with standardized decoders. The limitations and constraints of such an approach are then elaborated upon. It is shown that syntax modifications are inevitable. Thus, the second solution proposes the syntax modifications to incorporate the error resiliency tools of the base layer into the enhancement layers of the SSP profile. The new syntax is verified through subjective testing using Multi Media Double Stimulus Continuous Quality Evaluation (MMDSCQE). Subsequently, the new syntax was approved by the ISO/IEC MPEG-4 committee and resulted in a new profile known as the Error Resilient Simple Scalable Profile (ER-SSP). It is shown that minor modifications are required in the Header Extension tool to synchronize the decoding process between the enhancement and the base layer. Thus, it is shown that base layer error resilience tools are equally applicable to the enhancement layer with nominal syntax changes. r 2005 Elsevier B.V. All rights reserved. Keywords: Error resilient video coding and MPEG-4 scalable video coding ARTICLE IN PRESS www.elsevier.com/locate/image 0923-5965/$ -see front matter r

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Section: Resultsmentioning

confidence: 99%

“…Common to all of the experiments to follow the coded bitstreams are transmitted over GPRS channel conditions using a GPRS simulator [3]. Each bitstream is coded at around 21 kbps.…”

Section: Resultsmentioning

confidence: 99%

Syntax friendly and syntax amendment approaches to error resiliency in the MPEG-4 Simple Scalable Profile

Shanableh¹,

Reid²

2005

Signal Processing: Image Communication

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“…Em [5] Em [27] é realizado um estudo de desempenho em termos de throughput e delay para diferentes tipos de tráfego em relação aos quatro esquemas de codificação GPRS em uma rede GSM convencional.…”

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Algoritmo de alocação dinâmica de largura de faixa para redes de comunicação móvel celular

Queiroz¹

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Deploying Wireless Networks

Wilton

Charity

2008

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Do you want your wireless network to be profitable? Wireless operators will find this practical, hands-on guide to network deployment invaluable. Based on their own extensive experience, the authors describe an end-to-end network planning process to deliver the guaranteed Quality of Service (QoS) that enables today's wireless IP services such as VoIP, WWW and streaming video. The trade-off between enhanced user experience and operator cost is explored in the context of an enhanced business model. Comprehensive examples are provided for: • GSM/GPRS/EDGE • WCDMA-UMTS/HSDPA • OFDM-WiMAX/LTE • mesh WiFi • packet backhaul Topics addressed include: • capacity/peak data rates • service latency • link budgets • lifecycle costs • network optimisation With a focus on practical design, the book is ideal for radio and core network planners, designers, optimisers and business development staff at operators and network equipment manufacturers. Extensive references also make it suitable for graduate and postgraduate students.

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System level performance evaluation of GPRS for various traffic models

Cited by 6 publications

References 3 publications

Syntax friendly and syntax amendment approaches to error resiliency in the MPEG-4 Simple Scalable Profile

Syntax friendly and syntax amendment approaches to error resiliency in the MPEG-4 Simple Scalable Profile

Algoritmo de alocação dinâmica de largura de faixa para redes de comunicação móvel celular

Deploying Wireless Networks

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