22 citations · 23 across the 17 of their papers we have counts for
20 papers
On the overlap times in queues with dependence under a Farlie-Gumbel-Morgenstern copula
Ioannis Dimitriou
In this work, we analyze the steady-state maximum overlap time distribution in a single-server queue by introducing a dependence structure between service and interarrival times un…
On a class of multiplicative Lindley-type recursions with Markov-modulated dependencies
Ioannis Dimitriou
In this paper, we study a class of Markov-modulated multiplicative Lindley-type recursions of the form , where the additive term may depend on the mult…
On vector-valued functional equations with multiple recursive terms
Ioannis Dimitriou, Ivo J. B. F. Adan
In this work, we study vector-valued functional equations with multiple recursive terms that arise naturally when we are dealing with vector-valued multiplicative Lindley-type recu…
On dual risk models with proportional gains and dependencies
Ioannis Dimitriou
In this work, we consider extensions of the dual risk model with proportional gains by introducing a dependence structure between gain sizes and gain interrarrival times. Among oth…
A finite compensation procedure for a certain class of two-dimensional random walks
Ivo J. B. F. Adan, Ioannis Dimitriou
Motivated by queueing applications, we consider a certain class of two-dimensional random walks for which their invariant measure is written as a linear combination of a finite num…
The M/G/1 retrial queue with event-dependent arrivals
Ioannis Dimitriou
We introduce a novel single-server queue with general retrial times and event-dependent arrivals. This is a versatile model for the study of service systems, in which the server ne…
The generalized join the shortest orbit queue system: Stability, exact tail asymptotics and stationary approximations
Ioannis Dimitriou
We introduce the \textit{generalized join the shortest queue model with retrials} and two infinite capacity orbit queues. Three independent Poisson streams of jobs, namely a \texti…
On partially homogeneous nearest-neighbour random walks in the quarter plane and their application in the analysis of two-dimensional queues with limited state-dependency
Ioannis Dimitriou
This work deals with the stationary analysis of two-dimensional partially homogeneous nearest-neighbour random walks. Such type of random walks are characterized by the fact that t…
Analysis of the Symmetric Join the Shortest Orbit Queue
Ioannis Dimitriou
This work introduces the join the shortest queue policy in the retrial setting. We consider a Markovian single server retrial system with two infinite capacity orbits. An arriving…
Stationary analysis of certain Markov-modulated reflected random walks in the quarter plane
Ioannis Dimitriou
In this work, we focus on the stationary analysis of a specific class of continuous time Markov-modulated reflected random walks in the quarter plane with applications in the model…
Stationary analysis of a tandem queue with coupled processors subject to global breakdowns
Ioannis Dimitriou
We consider a tandem queue with coupled processors, which is subject to global breakdowns. When the network is in the operating mode and both queues are non empty, the total servic…
A Random Access G-Network: Stability, Stable Throughput, and Queueing Analysis
Ioannis Dimitriou, Nikolaos Pappas
The effect of signals on stability, throughput region, and delay in a two-user slotted ALOHA based random-access system with collisions is considered. This work gives rise to the d…
Analysis of the shortest relay queue policy in a cooperative random access network with collisions
Mayank Saxena, Ioannis Dimitriou, Stella Kapodistria
The scope of this work is twofold: On the one hand, strongly motivated by emerging engineering issues in multiple access communication systems, we investigate the performance of a…
On the analysis of partially homogeneous nearest-neighbour random walks in the quarter plane
Ioannis Dimitriou
This work deals with the stationary analysis of two-dimensional partially homogeneous nearest-neighbour random walks. Such type of random walks in the quarter plane are characteriz…
On the power series approximations of a structured batch arrival two-class retrial system with weighted fair orbit queues
Ioannis Dimitriou
We provide power series approximations for a structured batch arrival single server retrial system with two infinite capacity weighted fair orbit queues, i.e., the re-transmission…
On the Benefits of Network-level Cooperation in IoT Networks with Aggregators
Nikolaos Pappas, Ioannis Dimitriou, Zheng Chen
In this work, we consider a random access Internet of Things IoT wireless network assisted by two aggregators collecting information from two disjoint groups of sensors. The nodes…
A two-class queueing system with constant retrial policy and general class dependent service times
Ioannis Dimitriou
A single server retrial queueing system with two-classes of orbiting customers, and general class dependent service times is considered. If an arriving customer finds the server un…
Performance Analysis of a Cooperative Wireless Network with Adaptive Relays
Ioannis Dimitriou, Nikolaos Pappas
In this work, we investigate a slotted-time relay assisted cooperative random access wireless network with multipacket (MPR) reception capabilities. MPR refers to the capability of…
Stable Throughput and Delay Analysis of a Random Access Network With Queue-Aware Transmission
Ioannis Dimitriou, Nikolaos Pappas
In this work we consider a two-user and a three-user slotted ALOHA network with multi-packet reception (MPR) capabilities. The nodes can adapt their transmission probabilities and…
Throughput and Delay Analysis of Wireless Caching Helper Systems with Random Availability
Nikolaos Pappas, Zheng Chen, Ioannis Dimitriou
In this paper, we investigate the effect of bursty traffic and random availability of caching helpers in a wireless caching system. More explicitly, we consider a general system co…