Masahide Sasaki, Stephen M. Barnett, Richard Jozsa, Masao Osaki and Osamu Hirota Communications Research Laboratory, Ministry of Posts and Telecommunications Koganei, Tokyo 184-8795, Japan Department of Physics and Applied Physics, University of Strathclyde, Glasgow G4 0NG, Scotland School of Mathematics and Statistics, University of Plymouth, Plymouth, Devon PL4 8AA, England Research Center fo...

During the last decade several standards for Mobile telecommunications have been developed. The best known is without any doubt the Global Standard for Mobile Communications (GSM) which is operational in many countries, both within and outside Europe. It is now the most successful standard for mobile communications. Also the Digital Enhanced Cordless Telecommunications (DECT) was successfully i...

Communications regulation, as it has evolved since 1934, is ill-suited to the technological realities of convergence among different information and communications platforms. At its core, communications regulation is organized around specific applications and specific distribution technologies. Thus, over-the-air broadcasting is regulated differently than cable services, which are regulated dif...

Most serious discussion of telecommunications policy is governed by a utilitarian framework in which the success of communications networks is measured by some criterion of productivity. This exclusive emphasis creates undesirable rigidities in large communications systems upon which industrialized societies are so dependent. An analysis of productivity constraints on the social flexibility of ...

Abstract— An important aspect of network management is fault management, i.e., determining, locating, isolating, and correcting faults in the network. We study modeling of communication network protocols, and their fault detection, fault identification and fault location in the discrete event systems diagnosis framework. Our approach provides a systematic way of performing fault diagnosis in ne...

Convergence analysis for Turbo-equalization Aline Roumy, Alex J. Grant, Inbar Fijalkow, Paul D. Alexander, Didier Pirez Dept. of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA, Equipe de Traitement des Images et du Signal, ENSEA-University of Cergy-Pontoise, 95014 Cergy, France, Institute for Telecommunications Research, University of South Australia, Mawson Lakes, SA 50...

JochenWulf, Rüdiger Zarnekow Cross-Sector Competition in Telecommunications An Empirical Analysis of Diversification Activities Cross-sector competition in the information and communications technology sectors (ICT sectors) constitutes a key strategic challenge for telecommunications companies. Due to increasing convergence, value creation is resulting in a greater degree of interaction. The di...

The growth of telecommunications and electronic commerce has led to a growing commercial market for digital encryption technologies. Business needs encryption to protect intellectual property and to establish secure links with their partners, suppliers, and customers. Banks need it to ensure the confidentiality and authenticity of financial transactions. Law enforcement needs it to stop those u...

Satellite communications are destined to play an important role in future telecommunications infrastructure, thus the increasing interest in transporting Internet traac over satellite links. Many studies have shown that TCP has a poor performance in the context of satellite communications. This is due to many factors inherent to satellite communications and for which TCP originally designed for...