The mobile telecommunication industry is becoming one of the most important industries in the world. In the spectrum of wireless communication technologies, digital cellular telecommunication using the Global System of Mobile Communication (GSM) standard has enjoyed the fastest growth rate. GSM has been adopted in more than one hundred countries, with spectacular national growths regardless of ...

In this paper we present a communication architecture for accessing TCP/IP networks (mainly Internet) through GSM. We exploit the existing and widely used TCP/IP communication architecture, but also consider the specific features of wireless links and GSM networks. Our proposal is based in the indirect model of client/server interaction, where an intermediate element acts as a bridge between GS...

The GSM system has become the most popular system for mobile communication in the world. Criminals commonly use GSM phones, and it is therefore a need for forensic investigators to understand which evidence can be obtained from the GSM system. This paper briefly explains the basics of the GSM system. Evidence items that can be obtained from the Mobile Equipment, the SIM and the core network are...

The mobile telecommunication industry is becoming one of the most important industries in the world. In the spectrum of wireless communication technologies, digital cellular telecommunication using the Global System of Mobile Communication (GSM) standard has enjoyed the fastest growth rate. This paper attempts to examine GSM driving factors on a national level. For this purposes, it uses system...

As standard GSM protection methods are now well-known to be insecure, we have designed a new secure communication system over GSM network which is developed using the Symbian OS platform. It uses standard cryptographic methods such as key generators, key exchange protocols and public and private key cipher algorithms. This system allows communicating text, voice and any kind of data securely ov...

This article investigates the design, modeling, and fabrication of small-size (150 × 90 1.6 mm) broadband printed biconical antenna. The proposed antenna is intended for use a reference electromagnetic interference measurement inside EMC chamber. reflection coefficient (S11-parameter) verified by modeling equivalent circuit structure in terms lumped elements. offers −10 dB impedance bandwidth (...

Our first approach to visual monitoring was the deployment of mobile phone an integrated camera. It was powered by a car battery and installed on the unknown glacier since unknown date. It kept sending one picture of the glacier every hour during daytime and stopped working after two months due to power depletion. We consider it as a successful feasibility study. Based on the experiences gather...

This study examined the time dependence effects of exposure to radiofrequency radiation (RFR) emitted by standard GSM cellular phones on the cognitive functions of humans. A total of 48 healthy right-handed male subjects performed a spatial working memory task (that required either a left-hand or a right-hand response) while being exposed to one of two GSM phones placed at both sides of the hea...