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The IUP Journal of Electrical and Electronics Engineering:
Empirical Quantification and Characterization
of TV White Space Spectrum
in South-East Nigeria
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Localized under-utilized portions of the terrestrial TV bands, called the TV White Space (TVWS), present a new opportunity for wireless network in a frequency band which has very good functional characteristics. According to the regulations for TVWS spectrum access, unlicensed use is allowed only when it does not adversely affect the licensed (primary) users. In this paper, a comprehensive quantitative assessment and estimates of the TVWS in the 260-960 MHz band for urban, semi-urban and rural areas of Anambra State in the south-east part of Nigeria are presented using an inexpensive RF Explorer. The average available TVWS in the UHF band is more than 100 MHz, and 85% of the TV bands in 471-783 MHz range are not in use in the urban area, while as much as 98% are unused in rural areas.

 
 

Next generation of cellular data networks will face an exponential growth of wireless data traffic resulting from the boom in multimedia applications running on smartphones, tablets and other wireless devices (Global mobile data traffic forecast update, 2011-2016). Available (licensed) spectrums will clearly be insufficient to meet this demand, leading to cellular operators searching for novel mechanisms to achieve operational efficiencies that enhance network capacity. Obviously, an essential response to this increasing demand is the opening of new spectrumóboth licensed and recently, unlicensed (Farzad, 2013). With the transition to digital TV broadcasting and the consequent freeing up of VHF/UHF spectrum, a significant portion of the VHF/UHF bands will be available for unlicensed opportunistic use in providing enhanced wireless broadband access (FCC, 2010 and 2012). These bands are collectively denoted as TV White Spaces (TVWS).

TVWS propagation characteristics are good for wireless communications. Secondly, very little and relatively cheap infrastructure is required for their implementation, making them suitable for rural and undeveloped areas.

 
 
 

Electrical and Electronics Engineering Journal,TV White Space (TVWS), Primary users, Terrestrial bands, South-East Nigeria