Context. The problem of creating a model transmission and transformation information has been resolved, the processes in transmitters receivers have considered, process influence destabilizing factors communication channel investigated. Objective. study aims to create mathematical channel, taking into account that affect control correctness model. Method. A model, which evaluates stability sign...

We present an analysis of delay encountered in successfully accessing the Random Access Channel (RACH) of Universal Mobile Telecommunication System (UMTS) Radio Interface by User Equipments (UE) that want to initiate data transfer. The process of random channel access is described and the MS state modeled as a DTMC in order to derive the delay. We evaluate the variation of the channel access de...

I . INTRODUCTION Integrated optics (IO) devices for application in telecommunication are highly demanding on low insertion loss, efficient fiber-to-chip coupling, high compactness (small bending radii) and polarization independent operation. In most operating communication devices developed within the last decade, low-index contrast waveguiding structures have been applied El]. The large channe...

A Software-Defined Mobile Network (SDMN) architecture is proposed to enhance the performance, flexibility, and scalability of today’s telecommunication networks. However, SDMN features such as centralized controlling, network programmability, and virtualization introduce new security challenges to telecommunication networks. In this article, we present security challenges related to SDMN commun...

The data traffic in wireless networks for the third generation (3G) mobile telecommunication systems should take into account a variety of services (voice, data, video) and environments (e.g.: private, outdoors, indoors) as well as the user mobility behavior. A good evaluation of measures of performance can help a system designer to make its strategic decisions concerning cell size and the numb...

Wireless networks are becoming more and more popular and traffic over the networks is growing rapidly. Because the network infrastructure is expanding at a quick pace, especially the wireless Internet growth , both in size and in the types of applications, the performance issue and dimensioning issue of networks are becoming more critical. New wireless data applications are emerging over mobile...

This contribution proposes for Recommendation G.812 (1) a holdover specification for Clock Type II that is consistent with the current specification of 10 per day and is not broken into aging, temperature, and initial offset components and (2) a modification to the output wander TDEV mask, to apply only to Types II and III, to make the mask consistent with the respective wander generation TDEV ...

The development and wide application of quantum technologies highly depend on the capacity communication channels distributing entanglement. Space-division multiplexing (SDM) enhanced channel capacities in classical telecommunication bears potential to transfer idea using current infrastructure. Here, we demonstrate an SDM polarization-entangled photons over a 411m long 19-core multicore fiber ...