The following publications are possibly variants of this publication:
- Measurement-based spectrum database with mesh clusteringRei Hasegawa, Takeo Fujii. icufn 2017: 956-960 [doi]
- Clustering for Signal Power Distribution Toward Low Storage Crowdsourced Spectrum DatabaseYoji Uesugi, Keita Katagiri, Koya Sato, Kei Inage, Takeo Fujii. ieicetb, 104-B(10):1237-1248, 2021. [doi]
- Clustering of Signal Power Distribution toward Low Storage Crowdsourced Spectrum DatabaseYoji Uesugi, Keita Katagiri, Koya Sato, Kei Inage, Takeo Fujii. vtc 2019: 1-6 [doi]