| Presentation | 2016-01-21 Analysis of low-cost Welch FFT segment size selection method for spectrum usage measurement Hiroki Iwata, Kenta Umebayashi, Janne Lehtomaki, Yasuo Suzuki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Smart Spectrum Access (SSA), which is an advanced Dynamic Spectrum Access (DSA) exploits any statistical information of spectrum utilization obtained by spectrum usage measurements has been investigated. This paper focuses on signal processing techniques for measurements in a spectrum usage measurement system. An observation equipment performs the spectrum usage detection in time-frequency plane using Welch FFT for time-frequency conversion and energy detection. For Welch FFT, to properly select Welch FFT segment size is important since it determines the degree of accuracy of spectrum usage detection. Conventional segment size selection method requires relatively high computational complexity since it exhaustively searches a proper segment size from selectable all segment sizes, which results in an inefficient search for selecting a proper segment size. In this paper, a segment size selection method which limits searched segment size while it selects a proper segment size with low cost and efficiency is proposed. By numerical simulations, the performances between proposed method and conventional method are compared and analyzed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Dynamic spectrum access / Spectrum usage measurement / Welch FFT / Energy detection |
| Paper # | SR2015-72 |
| Date of Issue | 2016-01-14 (SR) |
| Conference Information | |
| Committee | SR |
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| Conference Date | 2016/1/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Fukue-bunka-kaikan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Cognitive wireless network, Cross layer wireless technology, SDN, etc. |
| Chair | Takeo Fujii(Univ. of Electro-Comm.) |
| Vice Chair | Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) / Masayuki Ariyoshi(NEC) |
| Secretary | Kenta Umebayashi(Shinshu Univ.) / Masayuki Ariyoshi(NICT) |
| Assistant | Kazuto Yano(ATR) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT) / Gia Khanh Tran(Tokyo Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Smart Radio |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Analysis of low-cost Welch FFT segment size selection method for spectrum usage measurement |
| Sub Title (in English) | |
| Keyword(1) | Dynamic spectrum access |
| Keyword(2) | Spectrum usage measurement |
| Keyword(3) | Welch FFT |
| Keyword(4) | Energy detection |
| 1st Author's Name | Hiroki Iwata |
| 1st Author's Affiliation | Tokyo university of agriculture and technology(TUAT) |
| 2nd Author's Name | Kenta Umebayashi |
| 2nd Author's Affiliation | Tokyo university of agriculture and technology(TUAT) |
| 3rd Author's Name | Janne Lehtomaki |
| 3rd Author's Affiliation | University of Oulu(Univ. of Oulu) |
| 4th Author's Name | Yasuo Suzuki |
| 4th Author's Affiliation | Tokyo university of agriculture and technology(TUAT) |
| Date | 2016-01-21 |
| Paper # | SR2015-72 |
| Volume (vol) | vol.115 |
| Number (no) | SR-411 |
| Page | pp.pp.1-8(SR), |
| #Pages | 8 |
| Date of Issue | 2016-01-14 (SR) |