In this paper, various novel pulse width modulation techniques are proposed, which can minimize the total harmonic distortion and enhances the output voltages from five level inverter to multilevel topologies. Multilevel inverters are important for power electronics applications such as flexible ac transmission systems, renewable energy sources, uninterruptible power supplies and active power f...

This paper empirically compares the Markov-switching and stochastic volatility diffusion models of the short rate. The evidence supports the Markov-switching diffusion model. Estimates of the elasticity of volatility parameter for single regime models unanimously indicate an explosive volatility process, while the Markov-switching models estimates are reasonable. We find that either Markov-swit...

INTRODUCTION This book is about the performance evaluation of high-speed switching fabrics and networks. More simply, it concerns how the next generation of telecommunications technology can be designed, analyzed, and understood. But this idea requires some explanation. The roots of today's high-speed switching technology go back to the advent of the digital computer in the 1940s. For the first...

Network on Chip (NoC) is proposed as a promising technology to address the communication challenges in deep sub-micron era. NoC brings network-based communication into the on-chip environment and tackles the problems like long wire complexities, bandwidth scaling and so on. After more than a decade's evolution and development, there are many NoC architectures and solutions available. Neverthele...

In this paper, we investigate the performance of reservation mechanisms for optical burst switching (OBS) in multiple hop network environments. We first review current research on wavelength reservation schemes for OBS, and investigate the path length priority effect of existing justenough-time (JET) scheme. And then, we propose a novel hopby-hop priority increasing (HPI) scheme. The simulation...

This survey paper explains the issues in designing terabit routers and the solutions for them. The discussion includes multi-layer switching, route caching, label switching, and efficient routing table lookups. Router architecture issues including queuing and differentiated service are also discussed. A comparison of features of leading products is included.

Due to wide coverage and asymmetric bandwidth, satellite communications are becoming an important part of global multimedia networks. Actual trend in global communications is to integrate satellite systems in the development of Internet [1]. A lot of services are being created exploiting wide diffusion of Internet, however results are not always acceptable due to different requirements of each ...

We study infinite–horizon, optimal switching problems under a general class of stochastic volatility models that exhibit “fast” mean–reversion by using techniques from homogenisation theory. This leads to perturbation theory, providing closed–form approximations to the full switching problem which is often intractable, both analytically and numerically. We apply our general results to certain, ...

Title of thesis: COMPARING REGIME-SWITCHING MODELS IN TIME SERIES: LOGISTIC MIXTURES: vs. MARKOV SWITCHING Dimitrios V. Paliouras Master of Science, 2007 Thesis directed by: Professor Benjamin Kedem Department of Mathematics The purpose of this thesis is to review several related regime-switching time series models. Specifically, we use simulated data to compare models where the unobserved stat...

Much research in recent years has focused on various routing strategies for supporting ee-cient communication in point-to-point networks. Other research has emphasized novel switching techniques, such as virtual cut-through and wormhole switching. However, little attention has been paid to the subtle interplay between routing and switching schemes. It is desirable to select routing strategies t...