Abstract
Geo-location white space spectrum databases (GL-WSDB) are currently the most preferred technique for enabling spectrum sharing between primary users and secondary users or white space devices (WSDs) in the very-high frequency (VHF) and ultra-high frequency (UHF) bands. This is true because the technologies for making low-cost WSDs that are capable of autonomous sensing and detection of available white space (WS) spectrum are not yet feasible. The primary roles of such GL-WSDB systems are three-fold: first, to translate the protective WS spectrum usage regulations provided by the national spectrum regulatory authorities. The second role is the allocation of locally available spectrum channels in such a way that any harmful interference to the primary user networks and secondary transceiver stations is kept below acceptable thresholds. The third important role played by the GL-WSDB is to provide technical mechanisms for enabling WSDs to access locally available WS spectrum channels. This chapter reviewed the necessary enabling technical conditions to allow coexistence and compatibility of primary and secondary systems in the VHF and UHF spectrum through a GL-WSDB approach. The practical implementation of real-life GL-WSDB was performed. Results of WS channels available from five cities in South Africa calculated from the implemented GL-WSDB was compared with a commercially variant GL-WSDB and was found to be 68 % similar. Additionally results from the implemented GL-WSDB were compared with the measurements obtained from the field spectrum scanning campaign at a location in Cape Town South Africa and was found to be 64 % similar. The chapter recommended some important enabling TVWS policy for national regulators.
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The authors wish to thankfully acknowledge the CSIR and TUT for their continuous financial and material support.
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Mfupe, L., Mekuria, F., Montsi, L., Mzyece, M. (2015). Geo-location White Space Spectrum Databases: Review of Models and Design of a Dynamic Spectrum Access Coexistence Planner and Manager. In: Mishra, A., Johnson, D. (eds) White Space Communication. Signals and Communication Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-08747-4_6
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DOI: https://doi.org/10.1007/978-3-319-08747-4_6
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