This paper describes the design of a control and management network (orderwire) for a mobile wireless Asynchronous Transfer Mode (ATM) network. This mobile wireless ATM network is part of the Rapidly Deployable Radio Network (RDRN). The orderwire system consists of a packet radio network which overlays the mobile wireless ATM network, each network element in this network uses Global Positioning...

The mobile communication is nowadays one of the basic needs of humanity. It is essential to the flourishing of human beings. Considering this reality, the need to use its mobile phone is become more important and diversified. The subscribers of the various mobile telephone operators are increasingly demanding. This situation poses the problems of the cover mobile network to the operators and le...

Yoshiki Okano and Keizo Cho We have developed an antenna measurement system for mobile terminals that can efficiently evaluate both the performance of the mobile terminal antenna itself and the overall radio performance of the mobile terminal. We provide an overview of that measurement system and describe the technology applied for faster and more accurate measurement as well as the effectivene...

Introduction: The continuous rapid growth of the telecommunications industry and common application of cell phones have raised debates on the human health risks associated with exposure to radio frequency fields due to these phones or their base stations and other sources such as radar, radio/television waves, and industrial and medical applications. This study aimed to invest...

While the history of mobile communications is long [1–3], and the background of mobile networks thereby is also long, in this chapter we focus on the historic evolution in terms of network architecture and services starting with Second Generation (2G) mobile systems. In particular, we consider the development of the architecture of Global System for Mobile Communications (GSM), since it is by f...

A terahertz-wave communication system directly connected to an optical fiber network is promising for application to future mobile backhaul and fronthaul links. The possible broad bandwidth in the terahertz band is useful for high-speed signal transmission as well as radio-space encapsulation to the high-frequency carrier. In both cases, the low-latency feature becomes important to enhance the ...

|In mobile radio communications, for a given system bandwidth the number of supported mobile terminals and the o ered data rates per mobile terminal should be maximized. The enhancement of the air interfaces plays an important role when pursuing this goal. In the paper various possibilities of air interface enhancements suited for 3G and beyond-3G mobile radio systems are discussed. The conside...

INTRODUCTION RAPID advancement of semiconductor integratedcircuit technology has reduced the cost of mobile telecommunication terminals year by year. The global systems for mobile communications (GSM),1) which was standardized mainly by European countries, has enhanced the large scale integration of radio-frequency circuits because mobile telecommunication systems of European countries do not r...

The Rapidly Deployable Radio Network (RDRN) is an architecture and experimental system to develop and evaluate hardware and software components suitable for implementing mobile, rapidly deployable, and adaptive wireless communications systems. The driving application for the RDRN is the need to quickly establish a communications infrastructure following a natural disaster, during a law enforcem...

The global system for mobile communications, (GSM) is the most popular standard that implements second generation (2G) cellular systems. 2G systems combined with general packet radio services (GPRS) (3GPP TS 03.6, 2002) are often described as 2.5G, that is, a technology between the 2G and third generation (3G) of mobile systems. GPRS is a service that provides packet radio access for GSM users....