In this paper we analyze the methodology developed by the International Telecommunication Union (ITU)for estimating the spectrum requirement for International Mobile Telecommunications (IMT) systems. TheInternational Telecommunication Union estimates spectrum requirements by following ITU-R-Rec.M1768.Although this methodology is adopted by ITU-R, there are discrepancies for estimating the spectrumrequirement for developing countries. ITU estimates the spectrum requirement by considering technicaland market parameters that were provided by the most developed countries with high income and highdevelopment index. Developed countries have a very rapid expansible telecom market due to the high levelof penetration, dominant user density and usage of high-volume multimedia services. In contrast,developing countries use less bandwidth-intensive services such as voice communication, low rate data,low and medium multimedia. However, while the input parameters are adequate for developed countries,they do not reflect the status of developing countries. For this reason the ITU spectrum estimationoverestimates the exact requirements of spectrum for IMT systems for developing countries. This paperpresents an approach based on the technical and market related parameters, which is thought to beapplicable for overcoming the shortcomings of the current ITU methodology in estimating the spectrumrequirement for developing countries like Bangladesh.
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