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 is concerned with observer based output feedback control of linear systems with both multiple inputs and multiple outputs delays. Our recently developed truncated predictor feedback (TPF) approach for state feedback stabilization of time-delay systems is generalized to the design of observer based output feedback controllers. By assuming that the open-loop time-delay systems are not exponentially...
The wireless mobile network is a dynamic environment. The characteristics of the wireless mobile communication include limited channel bandwidth, high BER, dynamic change over time, unstable channel quality, mobile node, competition of multiple users to share the channel, and the users' wireless signal interference from other nodes of the shared channel. These characteristics of wireless communication...
At the age of global positioning system (GPS), Loran-C is still valuable. Loran-C can be used in the new navigation infrastructure both as a backup navigation and a redundant source of GPS integrity information which is provided by the wide area augmentation system (WAAS). The time information, such as WAAS message, can be added into Loran-C by using Loran-C data modulation. In this paper, several...
The paper presents the design of a fast voltage-mode hysteretic buck converter with adaptive ripple controller. The conventional hysteretic converters have the merit of fast response and yet stable operation. However, the output voltage ripple is always higher than the fixed window of the hysteretic comparator. The adaptive ripple controller is a circuit which automatically generates a virtual hysteresis...
The weak approximate controllability of stochastic partial differential equations (PDEs) with infinite delays and Possion jumps is discussed. According to the fixed-point theorem of Krasnoselski-Schaefer and assumption of the approximate controllability for its corresponding linear system, the existence of the mild solution to stochastic PDEs is established. The sufficient conditions for the weak...
This paper is concerned with the problem of stabilizing a linear system with input delay. Motivated by the firstorder truncated predictor feedback (TPF) approach recently developed by the authors, a general higher-order TPF controller that contains higher-order terms of the nominal feedback gains is proposed. It is shown that this higher-order TPF can also globally and semi-globally stabilize the...
This paper studies on the issue of outsourcing service competition, and researches on the influence of differences of decision order on the outsourcing service competition equilibrium of suppliers, and probes into the outsourcing service competition equilibrium when the decision order is endogenously determined. The conclusion drawn shows that when the decision order is endogenously determined the...
The relay-assisted Orthogonal Frequency-Division Multiple Access (OFDMA) cellular system is one of the most promising technology thanks to the enhancements of the system capacity and coverage it provides. However, some special features may lower its positive aspects. In multiple relay case, the asymmetric link problem in the two stages forming the relaying process may result in important resource...
We propose a symbol-by-symbol (SBS) detector for Gaussian minimum shift keying (GMSK) signals in body area networks (BAN). Our detector exploits the orthogonality between adjacent GMSK-modulated symbols. By dividing the received signals into inphase-/quadrature-channels and odd-/even-streams, the strongest inter-symbol interference (ISI) from the adjacent symbols is removed. A whitened matched filter...
In this paper, the weak approximate controllability of neutral stochastic evolution differential systems with poisson jump is considered. When these linear systems is approximate controllability and evolution operator is not compact, the sufficient conditions for the weak approximate controllability of these associated nonlinear stochastic systems in Hilbert spaces is obtained by using contracting...
Since the IEEE 802.11 DCF adopted the Binary Exponential Back-off (BEB) algorithm in its contention window adjustment scheme, many alternative back-off algorithms were proposed in order to enhance the performance. Among them is an Exponential Increase Exponential Decrease (EIED) back-off algorithm, whose performance was simulated and analyzed in a special case of doubling or halving the contention...
A novel method utilizing state space neural network (SSNN) with adaptive filters is proposed to estimate the traffic flow parameters. The SSNN's network topology is derived from delays and stops estimation problem, so the design of SSNN reflects the relationships that exist in physical traffic systems. To improve SSNN effectiveness, the adaptive filters is proposed to train the SSNN instead of conventional...
This paper studies the state feedback robust H∞ control with memory for uncertain linear switched systems with multiple delays. Based on Multi-Lyapunov-function method, a sufficient condition in the LMI formulation is proposed for H∞ bounded stabilization analysis. The switching law and the robust H∞ controller for each subsystem with memory are designed. An illustrative example shows the feasibility...
A design of the digital synchronous system which is based on FPGA is presented. To reduce the delay of the system logic and enhance the working frequency, the timing constraints have been analyzed. We investigate the influences of the delay of data output (Tco), the delay of combinational logic circuits (Tdelay), the setup time (Tsetup) and the clock cycle (T) on the working frequency, and adopt the...
Minimizing the worst-case playback delay (WPD) in VoD services is both critical and challenging. Given a fixed amount of bandwidth for broadcasting and patching, there is no prior work on determining the minimum WPD, let alone guaranteeing it. In this work, we propose novel schemes that leverage the unique properties of a TDM-based Passive Optical Network (PON) by performing rebroadcasting and patching...
The self wide-range (26%~76%), fine-scale (34 ps) duty cycle adjustment technique with high-precision (28 ps) calibration circuit are proposed for at-speed delay test and performance binning. Test chip DFT strategies are validated fully function work by instruments and HOY wireless test system.
This paper puts forward a dynamic model of a closed-loop supply chain system with remanufacturing delay and disposal delay. The locally optimal performance and the delay-dependent Hinfin control strategy of the supply chain system are obtained for different delays. The results show that there is a close correlation between the system performance and the time delays. With the increase of time delays...
With rapid development of communication technology, the signal integrity is impacting the system performance much more than before. So either in the IC design or in the system design, it is very important to investigate negative timing analysis and its mathematical modeling in the high speed integrated circuit. In the paper, we introduce the origin of the negative timing script in the deep sub-micrometer...
This paper presents a preliminary result for the problem of robust Hinfin control for linear uncertain switched systems with time-varying delay. Based on multi-Lyapunov function method and linear matrix inequality method, a sufficient condition for switched systems with robust stability and Hinfin criteria gamma using a state-based switching law is proposed.
A simple and easy-to-implement analytical model for scheduling algorithm is proposed. Packets delay can be easily calculated with this analytical model but the computational complexity is reduced more compared with other popular methods such as Laplace-Stieltjes transform or Probability Generating Function. Two theoretical analyses on the basis of the proposed model are presented. The results are...
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.