Estimation of the Gilbert model parameters usingthe simulated annealing method

Tan, Tze-Jie; Chang, Wen‐Whei

doi:10.1049/el:19960840

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…• Burst or sequence of losses The channel loss process of such network causes has been modeled in literature by several common models such as the Poisson model, Gilbert model, and Bernoulli model [7,8]. We carried out the analysis of communication channels that produce this mixture of losses using these different common packet loss models.…”

Section: Packet Loss Distributions and Modelingmentioning

confidence: 99%

“…It is worth noting that, when the Gilbert channel loss model [6,7,8] is used to simulate packet loss, there are two states need to be analyzed in our study which are: the good or no-loss state where no packet loss occurs (State 1), and the loss state where packets are lost (State 0). In any of these states the channel is, the loss occurs following an independent and identical distribution (iid) model [10].…”

Section: Lower Layer Packet Loss Process and Its Parametersmentioning

confidence: 99%

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A framework for network reliability through QoS mapping between lower and upper layers

Al-Kuwaiti

Kyriakopoulos

Hussein

2007

2007 International Symposium on High Capacity Optical Networks and Enabling Technologies

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The majority of today's infrastructures are vulnerable to various disruptions that affect their essential services. Consequently, different research programs have been aiming at lowering such disruptions. In fact, the problem of designing systems with dependability, reliability, or security characteristics has long been acknowledged as an area for further research, and has received a substantial amount of attentions in the last few years by many different organizations and institutes. However, there are various inconsistent concepts and terminologies that are commonly used to describe the performance of systems (e.g., high-confidence, survivable, trustworthy, and robust). Some of these concepts are quantitative while others are qualitative, and it is a challenge to analyze and evaluate the performance of systems subjectively. Therefore, in this research, we are relating the various subjective concepts to a simple measurable concept which is the reliability concept, and based on analyzing this concept in the high-speed IP-based network environment, the reliability concept is further expressed by the Quality of Service (QoS). A QoS mapping between the lower and upper layers loss rate performance parameter has been developed. Further, the impact of the lower layer packets loss on the upper layer frames quality has been investigated. This mapping allows better understanding of the technical network parameters from the application's perspective of the service level agreement (SLA) and it balances the reservations of the right resources.

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Section: Packet Loss Distributions and Modelingmentioning

confidence: 99%

Section: Lower Layer Packet Loss Process and Its Parametersmentioning

confidence: 99%

A framework for network reliability through QoS mapping between lower and upper layers

Al-Kuwaiti

Kyriakopoulos

Hussein

2007

2007 International Symposium on High Capacity Optical Networks and Enabling Technologies

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“…The main simulation parameters are listed in Table I. A two-state Gilbert channel loss model [8] is adopted for modelling timecorrelated channel errors. A transform expand sample based MPEG-4 traffic generator [9] which generates traffic that has the same first and second order statistics as an original MPEG-4 trace is used for the simulation of real time traffic.…”

Section: A Simulation Setupmentioning

confidence: 99%

An enhanced high-rate WPAN MAC for mesh networks with dynamic bandwidth management

Chen

Zhou

2005

GLOBECOM '05. IEEE Global Telecommunications Conference, 2005.

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A mesh-enabled WPAN (Mesh-WPAN) built on the standard IEEE 802.15.3 MAC allocates channel time node by node along a route. This allocation causes unnecessary packet delays, which is not desirable for multimedia-dominating scenarios. Also, the variability of wireless link may result in relaying nodes' starvation or buffer overflow. In this work an enhanced MAC protocol for high-rate Mesh-WPAN named Group Relay And Token Solicitation (GRATS) is proposed. Group relay enables dynamic channel time sharing among the nodes along a route. Token solicitation allows for temporarily adjusting the number of packets in a group. Both mathematical analysis and simulation results show that the GRATS not only solves the relaying nodes' starvation and buffer overflow problems, but also reduces average packet delay noticeably. Simulation results also show that the GRATS outperforms the IEEE 802.15.3 MAC significantly for delay bounded VBR video traffic in terms of job failure rate.

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“…In an earlier work [21], we presented preliminary experimental results showing that the simulated annealing technique [22] is preferable to the gradient method for use in estimating Gilbert model parameters. However, for Fritchman channel modeling problems, the error-performance surface tends to exhibit many different convex regions and has been found difficult to optimize by means of the simulated annealing algorithm.…”

Section: Parameter Estimation In Gilbert and Fritchman Modelsmentioning

confidence: 99%

Robust vector quantization for wireless channels

Chang

Tan

Wang

2001

IEEE J. Select. Areas Commun.

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This study focuses on two issues: parametric modeling of the channel and index assignment of codevectors, to design a vector quantizer that achieves high robustness against channel errors. We first formulate the design of a robust zero-redundancy vector quantizer as a combinatorial optimization problem leading to a genetic search for a minimum-distortion index assignment. Performance is further enhanced by the use of the Fritchman channel model that more closely characterizes the statistical dependencies between error sequences. This study also presents an index assignment algorithm based on the Fritchman model with parameter values estimated using a real-coded genetic algorithm. Simulation results indicate that the global explorative properties of genetic algorithms make them very effective in estimating Fritchman model parameters, and use of this model can match index assignment to expected channel conditions. Index Terms-Genetic algorithm, index assignment, vector quantization.

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Estimation of the Gilbert model parameters usingthe simulated annealing method

Cited by 5 publications

References 4 publications

A framework for network reliability through QoS mapping between lower and upper layers

A framework for network reliability through QoS mapping between lower and upper layers

An enhanced high-rate WPAN MAC for mesh networks with dynamic bandwidth management

Robust vector quantization for wireless channels

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