Data Performance in a System Where Data Packets are Transmitted During Voice Silent Periods--Single Channel Case

Fischer, Martin J.

doi:10.1109/tcom.1979.1094562

Cited by 24 publications

(2 citation statements)

References 13 publications

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“…There are also "mini-gaps" and "mini-spurts" due to the short silent intervals that punctuate continuous speech. A commonly used approach is to represent the voice source as a two state Markov Modulated Poisson Process (MMPP) 11 . The mean (exponentially distributed) durations of the states and the values of the Poisson arrival rates in each state are sufficient to define the Markov process.…”

Section: Re-using Speech Silences For Data Transmissionmentioning

confidence: 99%

Next-generation multiservice VSAT networks

Hadjitheodosiou¹,

Coakley²,

Evans³

1997

Electronics &Amp; Communication Engineering Journal

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Very Small Aperture Terminal (VSAT) satellite networks have so far been successful in the provision of specific communication services to geographically dispersed users. However, user demands are becoming more complex, and VSAT networks are expected to provide a much wider range of services (voice, data and multimedia). We investigate how this service integration could be achieved and show that performance improvements are possible if efficient multi-access protocols and speech compression with voice activity detection techniques are used. We also discuss the future role VSATs could play in the provision of access to the Integrated Broadband Communications Network to remote users. It is shown that it could be possible to use VSATs for ATM service provision, but there are limitations on the system's performance from the satellite delay and limited link capacity. Careful consideration of these limitations is required in designing a system that could guarantee a particular Quality of Service.

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Section: Re-using Speech Silences For Data Transmissionmentioning

confidence: 99%

Next-generation multiservice VSAT networks

Hadjitheodosiou¹,

Coakley²,

Evans³

1997

Electronics &Amp; Communication Engineering Journal

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“…The literature abounds with examples of Markov-modulated rate processes. Existing analytical techniques for such systems generally fall into three categories: (1) Exact analysis of systems of relatively small size, Fischer [6] or with a special structure [22], [21], [18], [1], [15], [13], [14], [16], (2) analysis using simplifying approximations (typically approximating the modulating process as uncorrelated), and (3) asymptotic approaches, e.g. [19], [4], [24].…”

Section: Introductionmentioning

confidence: 99%

Analysis of separable Markov-modulated rate models for information-handling systems

Stern

Elwalid

1991

Advances in Applied Probability

206

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In many communication and computer systems, information arrives to a multiplexer, switch or information processor at a rate which fluctuates randomly, often with a high degree of correlation in time. The information is buffered for service (the server typically being a communication channel or processing unit) and the service rate may also vary randomly. Accurate capture of the statistical properties of these fluctuations is facilitated by modeling the arrival and service rates as superpositions of a number of independent finite state reversible Markov processes. We call such models separable Markov-modulated rate processes (MMRP).In this work a general mathematical model for separable MMRPs is presented, focusing on Markov-modulated continuous flow models. An efficient procedure for analyzing their performance is derived. It is shown that the ‘state explosion' problem typical of systems composed of a large number of subsystems, can be circumvented because of the separability property, which permits a decomposition of the equations for the equilibrium probabilities of these systems. The decomposition technique (generalizing a method proposed by Kosten) leads to a solution of the equilibrium equations expressed as a sum of terms in Kronecker product form. A key consequence of decomposition is that the computational complexity of the problem is vastly reduced for large systems. Examples are presented to illustrate the power of the solution technique.

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Vsat Networks

Hadjitheodosiou¹

1999

Wiley Encyclopedia of Electrical and Electronics Engineering

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The sections in this article are Historical Evolution of Vsat Networks Overview of Vsat Networks VSAT Network Architecture Multiple Access in Vsat Networks Provision of Integrated Services Using VSATs ATM Via Satellite Examples of Novel VSAT Services Asymmetric TCP/IP to Support Internet Applications Via Satellite Summary and Future Developments

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Data Performance in a System Where Data Packets are Transmitted During Voice Silent Periods--Single Channel Case

Cited by 24 publications

References 13 publications

Next-generation multiservice VSAT networks

Next-generation multiservice VSAT networks

Analysis of separable Markov-modulated rate models for information-handling systems

Vsat Networks

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