Title
Functional central limit theorems for Markov-modulated infinite-server systems
Abstract
In this paper we study the Markov-modulated M/M/$\infty$ queue, with a focus on the correlation structure of the number of jobs in the system. The main results describe the system's asymptotic behavior under a particular scaling of the model parameters in terms of a functional central limit theorem. More specifically, relying on the martingale central limit theorem, this result is established, covering the situation in which the arrival rates are sped up by a factor $N$ and the transition rates of the background process by $N^\alpha$, for some $\alpha>0$. The results reveal an interesting dichotomy, with crucially different behavior for $\alpha>1$ and $\alpha<1$, respectively. The limiting Gaussian process, which is of the Ornstein-Uhlenbeck type, is explicitly identified, and it is shown to be in accordance with explicit results on the mean, variances and covariances of the number of jobs in the system.
Year
DOI
Venue
2016
10.1007/s00186-016-0531-7
Math. Meth. of OR
Keywords
Field
DocType
Queues,Infinite-server systems,Markov modulation,Central limit theorems
Discrete mathematics,Mathematical optimization,Central limit theorem,Markov chain,Martingale central limit theorem,Queue,Background process,Gaussian process,Asymptotic analysis,Scaling,Mathematics
Journal
Volume
Issue
ISSN
83
3
1432-2994
Citations 
PageRank 
References 
2
0.51
3
Authors
3
Name
Order
Citations
PageRank
Joke G Blom116123.43
Koen De Turck29819.83
Michel Mandjes353473.65