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3 Image Processing & Communications

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Tuchola County Broadband Network (TCBN)

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Zabłudowski A. , Dubalski B. , Zabłudowski Ł. , Pedersen J. M.

Image Processing & Communications

2012

tom Vol. 17, no. 3

7--20

In the paper the designing project (plan) of Tuchola City broadband IP optical network has been presented. The extended version of network plan constitute technical part of network Feasibility Study, that it is expected to be implemented in Tuchola and be financed from European Regional Development Funds. The network plan presented in the paper contains both topological structure of fiber optic network as well as the active equipment for the network. In the project described in the paper it has been suggested to use Modular Cable System - MCS for passive infrastructure and Metro Ethernet technology for active equipment. The presented solution provides low cost of construction (CAPEX), ease of implementation of the network and low operating cost (OPEX). Moreover the parameters of installed Metro Ethernet switches in the network guarantee the scalability of the network for at least 10 years.

Analysis of regular structures third degree based on chordal rings

100%

Bujnowski S. , Dubalski B. , Pedersen J. M. , Zabłudowski A.

Image Processing & Communications

2009

tom Vol. 14, no 1

13-24

This paper presents an analysis of modified chordal rings third degree (CR3m) and modified double ring structure (N2Rm), which can be used as models of real networks. The proposed solutions are novel and different from the ones currently used since they have two chords of different lengths. In the first part of paper, formulas for the basic parameters diameter and average path length were derived using optimal/ideal graphs, and used for indicating transmission properties of the structures. These analytical results were confirmed by comparison to a large number of computations on real graphs. In the second part, these parameters were compared to the parameters of standard topologies, showing that the distances are shorter when having two different chord lengths.

Making FTTH happen: the Danish experience

75%

Pedersen J. M. , Jensen M. , Nielsen R. , Riaz T. , Gutierrez J. , Madsen O.

Image Processing & Communications

2009

tom Vol. 14, no 1

7-12

The deployment of Fiber To The Home (FTTH) in Denmark has accelerated over the previous years, and made Denmark one of the countries in Europe with the highest FTTH deployment rate. This development has been largely driven by the consumer-owned utilities and with almost no interference from government institutions and the incumbent operator, which makes the Danish FTTH evolution quite unique. In this paper we analyze the Danish FTTH deployment, and highlight some of the main drivers and challenges. A main conclusion is that FTTH can actually be deployed, even in rural areas. On the other hand the fast development in Denmark would probably not have happened without the special organization of electricity companies, and the traditions of these. In addition to technical challenges, ranging from system integration problems to handling of the physical fibers, it has been a significant challenge to actually attract customers: The development of speed and availability of xDSL solutions has increased the need for "killer" applications which take full advantage of the speeds offered by FTTH. The main contribution of this short paper is the analysis of the Danish FTTH experiences, which is valuable when developing technologies and services for FTTH, or when taking initiatives for supporting FTTH deployment in other countries.