In this paper a novel frequency hopping algorithm is introduced, which is tailored for use in a Cordless Telephone System (CTS) that relies on total frequency hopping to use the same frequency band as a GSM system.The algorithm was designed with the goal of minimising the interference between different CTS-units and between the CTS and the overlay GSM network, taking into account standard GSM i...

GSM-Railways (GSM-R) is an obsolete mobile technology with a number of shortcomings in terms of capacity and capability. These shortcomings become a major issue for railways as GSM-R may limit the number of running trains in some areas and it cannot support advanced data services. Hence, alternative technologies, such as LTE, have to be considered as a future railway communication technology. T...

introduction: over the last decade, exposure to electromagnetic waves due to base station antennas has increased. this study was planned to evaluate the effects of different electrical field strengths with 950 mhz waves of the gsm mobile phone system on the excitatory postsynaptic potentiation (epsp) slope of the dentate gyrus long-term potentiation (ltp). material and methods: twenty four naiv...

The artificial noise (AN) aided channel quality indicator (CQI) mapped generalized spatial modulation (GSM) philosophy is proposed for improving the security of legitimate links. Given randomness CQI, eavesdroppers cannot successfully decode confidential information. We analyse both secrecy rate as well eavesdropper's error and reveal that scheme outperforms its CQI-mapped counterpart. Theoreti...

Mobile networks not only provide great benefits to their users but they also introduce inherent security issues. With respect to security, the emerging risks of denial of service (DOS) attacks will evolve into a critical danger as the availability of mobile networks becomes more and more important for the modern information society. This paper outlines a critical flaw in GSM networks which open...

The sharing of resources between different users and different services is a key concept of radio resources dimensioning in GSM/GPRS networks. In this paper we present dimensioning rules based on traffic evaluation and quality of service level for GSM/GPRS users, focused on two radio resources allocation strategies: CP (Complete Partitioning) and PP( Partial Partitioning).The quality of service...

This paper considers the method to provide the roaming service for GSM subscribers, who roam into the CDMA network. The roaming service basically requires the identification, authentication and location management of roaming subscribers in the visited network. It also requires the interrogation of subscriber's data between the home and visited network. This paper proposes several requirements f...