Abstract
The emergence of cognitive radio technologies for the spectral re-usage of the underutilized TV bands, i.e. TV White Spaces (TVWSs), leads to interference concerns for the Digital Video Broadcasting–Terrestrial (DVB-T) services. The DVB-T receivers have to be protected from aggregate interference from in-band cognitive technologies transmissions. The regulators have assessed and defined the protection criteria for this case. This paper proposes an iterative on-the-fly channel allocation algorithm for IEEE 802.11af operation in TVWSs, which allocates the WiFi channels based on the max distance approach, including DVB-T protection criteria from the European and USA regulatory bodies, i.e. the Electronic Communications Committee (ECC) and the Federal Communication Commission (FCC), respectively. The simulation analysis of the algorithm include realistic data for DVB-T modeling and Poisson point process for WiFi Access Points (APs) modeling. The results prove the performance increase introduced by the algorithm in terms of spatial capacity/coverage and DVB-T service protection.
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