3).
Rural Broadband Services
Even though broadband access has become almost a daily necessity in developed nations,
the means of fulfilling these necessities have their own limitations. The technologies
commonly used to fulfill these needs are DSL and cable modems. Cable TV networks are
neither ubiquitous nor have been upgraded in all areas to enable broadband services.
WiMAX 489
Telephone networks, which are ubiquitous in developed nations, do not necessarily have
the sufficient reach to enable broadband services ubiquitously. The cost of upgrading the
cable and copper infrastructure to enable delivery of broadband services in rural areas
where the population density is very is low is not economically feasible. Therefore, even
though the broadband services are readily available in many of the urban and suburban
areas of developed nations, many rural areas are underserved. WiMAX is very well
suited to provide broadband services in such rural environments.
In rural applications of WiMAX, where subscriber density is low and spread out, a
BS has to cover a larger area in order to make any economic sense. This necessitates
the use of frequencies below 10 GHz, which have favorable propagation characteristics
over longer distances.
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