Mohammad K. Samarkandy

Analysis of the economic life and the replacement time of telecommunications equipment

This paper describes a mathematical model for the analysis of the economic life and the replacement time of telecommunication technology components. The theory has been applied to a practical case-study in Saudi Arabia.

A simplified approach for the investigation of the traffic capacity of cellular mobile radio telephone systems

Abstract This paper describes an approach for the investigation of the traffic capacity of cellular mobile radio telephone systems with fixed, dynamic, and hybrid channel assignment schemes. The basic objectives of the approach are simplicity and ease of use, so that it can be of help to a wide audience of mobile radio engineers.

Computer investigation of telephone-traffic capacity for cellular mobile radio systems

The authors provide tools for the investigation of the telephone-traffic capacity of cellular mobile systems with fixed, dynamic, and hybrid channel assignment schemes. The basic objectives considered in developing the tools are simplicity and ease of use, so that they can be of help to a wide audience of mobile radio engineers. For this purpose, a simple model of a cellular system is defined, and mathematical analysis for the telephone-traffic capacity of the model are derived using Erlang-B theory and Bakry and Ackroyd analysis (1981, 1982). Computer programs using the simplified formulae have been easily developed.<<ETX>>

Look angle contours of small transportable satellite earth stations for Arab Gulf countries

The authors present look angle contours over Arab Gulf countries to enable engineers and technicians to point any earth station directly (without any calculations) towards a given satellite in the geostationary orbit. Contours over Arab Gulf countries have been presented for ARABSAT and SABS satellite systems. These contour plots could be used efficiently for transportable and television receive-only earth stations to be deployed anywhere in rural and isolated areas. The proposed method could generally be applied to any area served by a given satellite.<<ETX>>