In this contribution, we investigate the performance of the output buffer of a video streaming server. We assume that the server encodes the video stream in a scalable way, i.e. the generated video packets contain a base layer ensuring a minimum of guaranteed quality and a stack of additional enhancement layers progressively improving the quality of video. When the output buffer gets congested,...

A novel cross-layer wireless resource allocation algorithm called DBMQT is proposed which distributes the resource based on dynamic buffer allocation mechanism for orthogonal frequency division multiplex access (OFDMA) system. The aim of allocation algorithm is to maximize system throughput while satisfying the QoS requirement for multi-user and multi-service. The algorithm consists of two step...

In this paper we consider a single buffer fluid model where sources arrive according to a Poisson process, and stay in the system for independent and identically distributed (iid) exponential amounts of time and then depart. While they are in the system, they generate fluid traffic that is modulated by iid finite state continuous time Markov chains (CTMC). The fluid in the buffer is drained at ...

We consider a discrete-time single-server queue with arrivals governed by a stationary Markov chain, where no arrivals are assumed to occur only when the Markov chain is in a particular state. This assumption implies that off-periods in the arrival process are i.i.d. and geometrically distributed. For this queue, we establish the exact relationship between queue length distributions in a finite...

We present an Anti-Brownian Electrokinetic trap (ABEL trap) capable of trapping individual fluorescently labeled protein molecules in aqueous buffer. The ABEL trap operates by tracking the Brownian motion of a single fluorescent particle in solution, and applying a time-dependent electric field designed to induce an electrokinetic drift that cancels the Brownian motion. The trapping strength of...

In this letter, we obtain the stable throughput region for a cognitive relaying scheme with a finite relaying buffer and imperfect sensing. The analysis investigates the effect of the secondary user’s finite relaying capabilities under different scenarios of primary, secondary and relaying links outages. Furthermore, we demonstrate the effect of miss detection and false alarm probabilities on t...

Arbitrary closed exponential queueing networks are examined such as with finite capacities and blocking or dynamic routing. Conditions are provided from which a simple upper bound on the system throughput and an error bound for its accuracy can be concluded. These conditions are illustrated for a Jackson network with finite entrance buffer and overflow station. An explicit error bound for this ...

Analytical models for wormhole routing in hypercube have widely been reported in the literature. Most of these models, however, have assumed negligible input buffer sizes. Hu and Kleinrock in [8] have proposed an analytical model that captures the effect of finite input buffer size for irregular high-speed LANs while Kouvatsos, Assi, and Ould-Khaoua [11] have very recently proposed a model base...

This article deals with the performance of Bluetooth scatternets in a real-life environment where different queues are implemented with finite buffers. Finite buffer size will introduce packet blocking at different queues along the packet path, which in turn causes changes in effective traffic load as well as retransmissions and ultimately affects end-to-end packet delays. The authors assume th...