Presentation | 2014-03-03 Window Functions for Frame Correlation Reduction in Overlapped FFT based Energy Detection Ryo TAKAI, Shoya UCHIDA, Yukitoshi SANADA, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Overlapped FFT based energy detection has been proposed as a signal detection scheme in dynamic spectrum access. The overlapped FFT scheme increases the number of FFT frames to reduce the variance of squared noise and improves the detection performance. As the FFT frames are overlapped, correlation values between the frames affect to the detection performance. This paper proposes the window functions that decrease the correlation values between adjacent FFT bins. Numerical results obtained through computer simulation show that novel window functions generated by upsampling a Hamming window improves the detection performance by 0.09. However, this window function suffers more from adjacent channel interference than a conventional window. Therefore, this paper also proposes a two step detection scheme to achieve higher detection performance and to avoid the influence of the adjacent channel interference. Result of computer simulation indicate that the proposed scheme improves the detection performance and reduces the effect from the adjacent channel signal. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Cognitive radio / Overlapped FFT / Spectrum sensing |
Paper # | SR2013-101 |
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Committee | SR |
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Conference Date | 2014/2/24(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Software Radio(SR) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Window Functions for Frame Correlation Reduction in Overlapped FFT based Energy Detection |
Sub Title (in English) | |
Keyword(1) | Cognitive radio |
Keyword(2) | Overlapped FFT |
Keyword(3) | Spectrum sensing |
1st Author's Name | Ryo TAKAI |
1st Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University() |
2nd Author's Name | Shoya UCHIDA |
2nd Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University |
3rd Author's Name | Yukitoshi SANADA |
3rd Author's Affiliation | Dept. of Electronics and Electrical Engineering, Keio University |
Date | 2014-03-03 |
Paper # | SR2013-101 |
Volume (vol) | vol.113 |
Number (no) | 457 |
Page | pp.pp.- |
#Pages | 8 |
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