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This paper reports estimates of TV white space (TVWS) availability in Japan that are based on the separation distances calculated using D/U-based and I/N-based rules. Calculating the TVWS availability with various TVWS-device parameters—antenna height, transmission power, protected area threshold, and adjacent channel leakage ratio (ACLR)—revealed the parameter dependence of the availability of TVWS...
This paper analyzes TV white space (TVWS) availability in Japan by estimating the amount and distribution of TVWSs across Japan and comparing them with those across the USA. While TVWS regulation is still under discussion in Japan, the expected availability is likely to be more encouraging than that in the USA. Japanese metropolitan areas tend to have more available channels than those in the USA...
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