Recently, switched systems have been found in many practical applications such as in communication network dynamics, robot manipulators, traffic management, etc. In this paper, we study the stability of time-varying linear switched systems under perturbations that satisfy linear growth condition, which is not available in current literature. By introducing a new Liao-type exponent for time-vary...

We investigate the invariance properties of a class of switched systems where the value of a switching signal determines the current mode of operation (among a finite number of them) and, for each fixed mode, its dynamics are described by a Differential Algebraic Equation (DAE). Motivated by the lack of invariance principles of switched DAE systems, we develop such principles for switched DAE s...

This paper is concerned with the H∞ control problem for a class of non-minimum phase cascade switched nonlinear systems. The system under consideration is composed of two cascade-connected parts which are also switched systems. Sufficient conditions under which the H∞ control problem is solvable under an arbitrary switching law are presented. The Common Lyapunov function and the switched state ...

This paper focuses on the threat of packet sniffing in a switched environment, and briefly explores the effect in a non-switched environment. Detail is given on techniques such as "ARP (Address Resolution Protocol) spoofing", which can allow an attacker to eavesdrop on network traffic in a switched environment. Third party tools exist which permit sniffing on a switched network. The result of r...

This paper presents an analysis technique that can be used to compute the harmonic and intermodulation distortion levels of a sampled-data circuit directly from a SPICE transient analysis. It is useful for analyzing the non-linear behavior of switched-capacitor and switched-current circuits at the transistor level. The approach is valid for all input signal levels, makes no assumption of the un...

Bandwidth services as they have evolved over the last years can increasingly be seen as a commodity. Multiple network operators have comparable offerings and compete for customers. This fuelled the foundation of bandwidth brokerage and bandwidth trading companies in the late 90s. Unfortunately, their business models where not very successful in the past. Besides the overall economic weakness at...

HOKENEK, B. s., and MOSCHYTZ, G. s.: ‘Analysis of multiphase switched-capacitor (m.s.c.) networks using the indefinite admittance matrix (i.a.m.)’, ibid., 1980, 127, pp. 226241 D~BROWSKI, A.: ‘A method for by-inspection derivation of signal flow graphs for biphase switched-capacitor networks’. Report 8703, Swiss Federal Institute of Technology, Zurich, Institute of Signal and Information Proces...

We discuss automatic switched optical/transport networks (ASON/ASTN [1][2]) with respect to cost structures. Based on the application of the value chain model of Michael Porter [3] to network operators' processes and activities, we elaborate on the advantages of automation using standardized network interfaces and a decentralized control plane. Furthermore, new business opportunities enabled by...