Cost-effective Information and Communication Technology (ICT) infrastructure for Tanziania

Pazi, Shaban M (2010) Cost-effective Information and Communication Technology (ICT) infrastructure for Tanziania. Doctoral thesis (DPhil), University of Sussex.

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The research conducted an Information and Communication Technology (ICT) field
survey, the results revealed that Tanzania is still lagging behind in the ICT sector due to
the lack of an internationally connected terrestrial ICT infrastructure; Internet connectivity
to the rest of the world is via expensive satellite links, thus leaving the majority of the
population unable to access the Internet services due to its high cost. Therefore, an ICT
backbone infrastructure is designed that exploits optical DWDM network technology,
which un-locks bandwidth bottlenecks and provides higher capacity which will provide
ICT services such as Internet, voice, videos and other multimedia interactions at an
affordable cost to the majority of the people who live in the urban and rural areas of
Tanzania. The research analyses and compares the performance, and system impairments, in a DWDM system at data transmission rates of 2.5 Gb/s and 10 Gb/s per wavelength channel. The simulation results show that a data transmission rate of 2.5 Gb/s can be successfully transmitted over a greater distance than 10 Gb/s with minimum system impairments. Also operating at the lower data rate delivers a good system performance for the required ICT services. A forty-channel DWDM system will provide a bandwidth of 100 Gb/s.

A cost analysis demonstrates the economic worth of incorporating existing optical fibre
installations into an optical DWDM network for the creation of an affordable ICT
backbone infrastructure; this approach is compared with building a completely new optical
fibre DWDM network or a SONET/SDH network. The results show that the ICT backbone
infrastructure built with existing SSMF DWDM network technology is a good investment,
in terms of profitability, even if the Internet charges are reduced to half current rates. The
case for building a completely new optical fibre DWDM network or a SONET/SDH
network is difficult to justify using current financial data.

Item Type: Thesis (Doctoral)
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: H Social Sciences > HE Transportation and communications
T Technology > T Technology (General)
Depositing User: Library Cataloguing
Date Deposited: 25 Jan 2011 11:22
Last Modified: 13 Aug 2015 14:14
Google Scholar:1 Citations

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