Approximations for multi-class departure processes

Approximations for multi-class departure processes

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Article ID: iaor2004843
Country: Netherlands
Volume: 38
Issue: 2
Start Page Number: 205
End Page Number: 212
Publication Date: Jun 2001
Journal: Queueing Systems
Authors:
Keywords: queueing networks
Abstract:

The exact analysis of a network of queues with multiple products is, in general, prohibited because of the non-renewal structure of the arrival and departure processes. Two-moment approximations have been successfully used to study these systems. The performance of these methods, however, strongly depends on the quality of the approximations used to compute the squared coefficient variation of the different streams of products. In this paper, an approximation method for computing the squared coefficient of variation of the departure stream from a multi-class queueing system is presented. In particular, we generalize the results of Bitan and Tirupati, and Whitt related to the interference effect.

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