Author :
van de Beek, Jaap ; Riihijärvi, Janne ; Achtzehn, Andreas ; Mähönen, Petri
Abstract :
In this paper, we study the availability of TV white spaces in Europe. Specifically, we focus on the 470-790 MHz UHF band, which will predominantly remain in use for TV broadcasting after the analog-to-digital switch-over and the assignment of the 800 MHz band to licensed services have been completed. The expected number of unused, available TV channels in any location of the 11 countries we studied is 56 percent when we adopt the statistical channel model of the ITU-R. Similarly, a person residing in these countries can expect to enjoy 49 percent unused TV channels. If, in addition, restrictions apply to the use of adjacent TV channels, these numbers reduce to 25 and 18 percent, respectively. These figures are significantly smaller than those recently reported for the United States. We also study how these results change when we use the Longley-Rice irregular terrain model instead. We show that while the overall expected availability of white spaces is essentially the same, the local variability of the available spectrum shows significant changes. This underlines the importance of using appropriate system models before making far-reaching conclusions.
Keywords :
statistical analysis; television broadcasting; Europe; ITU-R; Longley-Rice irregular terrain model; TV broadcasting; TV white space; UHF band; analog-to-digital switch-over; frequency 470 MHz to 790 MHz; frequency 800 MHz; statistical channel model; Cognitive radio; Mobile computing; Spread spectrum communication; TV; Transmitters; White spaces; TV white space; cognitive radio.; dynamic spectrum access;