The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper investigates a class of finite-horizon linear quadratic regular control problem for the continuous networked control systems with both packet delay and packet dropping. Based on estimation approach, a complete and explicit solution to the LQ problem is given in terms of a backward Riccati equation. The control input can be determined without knowing whether the previous control signal is...
This paper addresses the problem of constructing Lyapunov-Krasovskii functionals for verifying integral input-to-state stability(iISS) and input-to-state stability(ISS) of time-delay nonlinear systems. Based on decomposition of a time-delay system into a dynamic component (a functional differential equation) and static components (functional algebraic equations), this paper develops an iISS small-gain...
We study global stabilization of strict-feedforward systems with arbitrarily long input delay. These systems may be open-loop unstable but cannot exhibit finite escape instability, providing for a possibility of global stabilization even in the presence of long delay. We derive predictor-based feedback laws for exact compensation of input delay. These feedbacks are given explicitly due to the fact...
The output-feedback control problem for nonlinear systems with state and input delays is addressed. Both state and input delays are allowed to be time-varying and uncertain. The class of systems considered consists of a nominal system of feedforward form as well as appended dynamics. A delay-independent robust adaptive feedback is designed based on our recent results on dual dynamic high-gain scaling...
In a mobile cellular network, both new originating calls and handoff calls can be dropped at any time in the midst of a conversation when a user enters in a dead spot. Because of this, there is always some discrepancy between traffic originated by the mobile station (MS) and that of received by the base station (BS). A probability model is used in this paper to evaluate this discrepancy considering...
The paper addresses the problem of inventory control in production-inventory systems stressing the dynamical aspects of stock replenishment process. In the considered systems, the stock used to satisfy the unknown, time-varying demand can be refilled from multiple supply sources. The orders issued in each review period are realized with delay, which differs among the suppliers and transport alternatives...
In this paper, we study pattern preserving path following control of unicycle teams with communication delays. The pattern of the vehicle team is said to be preserved if the distance between it and the desired one remains in some given range. A virtual vehicle formation is introduced such that each virtual vehicle becomes the pursuit target for the corresponding real vehicle. First, an input-driven...
In this paper, we consider stochastic recursive optimal control problem of the stochastic delayed system described by forward-backward stochastic differential equation with delay. By virtue of classical spike variational approach, duality method and the anticipated backward stochastic differential equation, we obtain the maximum principle of the optimal control for this problem.
Based on the theory of timed Petri nets, the course and the rule of propagation of airplane delays in the airport is analyzed and researched. A timed Petri nets model is established for propagation of airplane delays of two airplanes in non-priority group, and also a timed Petri nets model is established for propagation of airplane delays of two airplanes in priority group. The concept of airplane...
Adaptive Rate Control (ARC) is a successful algorithm to increase the throughput to The Digital Video Broadcasting Return Channel via Satellite (DVB-RCS) but the throughput and dropped traffic did not meet the Quality of Service (QoS) for multimedia traffic standard [ETSI EN 300 421 v.1.1.2]. This paper will present the modified ARC algorithm to overcome the QoS problem for multimedia traffic by prioritize...
In relay networks, partial channel state information at the transmitter due to feedback delay can severely degrade the beamforming performance. In this paper, the decremental effect of transmit beamforming with feedback delay on the downlink performance of a two hop Amplify-and-Forward (AF) relay network over Rayleigh fading channels is investigated. The source is equipped with multiple antennas while...
The continuing miniaturization of LSI dimension is causing the increase of process-related variations which significantly affects not only its design turn around time but also its manufacturing yield. Statistical static timing analysis (SSTA) is expected as a promising way to estimate the performance of circuits more accurately considering delay variations. However, LSIs designed using SSTA may have...
Advancements in nano-scale Integrated Circuits manufacturing technology has resulted in variability of performance metrics. The performance parameters such as Power and Delay are no longer represented deterministically. As a result, circuit designers and manufacturers need to make use of statistical analysis to estimate performance of Integrated Circuits. In this paper we present a new methodology...
In this paper we propose a new cover traffic generation algorithm for flow-based anonymity systems and compare it with other algorithms from the literature. Our algorithm is based on four ideas: fixed time rounds, flow classification with different protection methods for different classes, protection depending on the potential cost and finally, use of history. Simulation results show that our solution...
Studying the vehicular traffic profiles on a motorway gives us a unique insight into the dynamics of drivers' behaviour. This behavioural study provides us with an important utility to develop applications and deploy infrastructure according to the need. Consequently, it enables us to design and develop accurate motorway vehicular simulators and robust medium access control (MAC) protocols that can...
Recursive moment computation for RCL interconnect trees is reformulated in a novel symbolic representation. A hybrid data structure consisting of a capacitor tree and a multi-root binary decision diagram, both isomorphic to the circuit topology, is constructed for this symbolic representation. Moments up to any order can be computed more efficiently by this representation. Derivatives of high-order...
This paper investigates the global exponential stability of static neural networks (SNN) with time-varying delays and fixed moments of impulsive effect. Sufficient conditions for the exponential stability are established by using Lyapunov functions and the Razumikhin technique.
This paper addresses the Hankel norrn of uncertain neutral systems with mixed time delays£®Besed on the Lyapunov-Krasovskii functional and the LMI approach, delay-dependent sufficient conditions are presented such that the uncertain neutral systems is robustly asymptotically stable and the Hankel norm is less than a prescribed performance level.
This paper analyzes multilevel pulse amplitude modulation (M-PAM) for energy detection receivers. Because of the asymmetric, non Gaussian probability density function (PDF) of the energy detected signal, the optimal signal constellation is not known a priori. In order to achieve optimal symbol error rate performance using M-PAM, the optimal signal constellation will be calculated. Finally the SER...
In this paper, we propose a novel spectrum sensing technique, called as multi-slot spectrum sensing, to detect spectral holes and to opportunistically use under-utilized frequency bands without causing harmful interference to legacy (primary) networks. The key idea of the proposed sensing scheme is to combine the observations from the past N (N ?? 2) sensing blocks including the latest one. Specifically,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.