Window functions for frame correlation reduction in overlapped FFT based energy detection

Ryo Takai; Shoya Uchida; Yukitoshi Sanada

doi:10.1109/VTCFall.2014.6966231

Window functions for frame correlation reduction in overlapped FFT based energy detection

Ryo Takai, Shoya Uchida, Yukitoshi Sanada

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

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 which 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.

Original language	English
Title of host publication	2014 IEEE 80th Vehicular Technology Conference, VTC2014-Fall, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479944491, 9781479944491
DOIs	https://doi.org/10.1109/VTCFall.2014.6966231
Publication status	Published - 2014 Nov 24
Event	80th IEEE Vehicular Technology Conference, VTC 2014-Fall - Vancouver, Canada Duration: 2014 Sep 14 → 2014 Sep 17

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Other

Other	80th IEEE Vehicular Technology Conference, VTC 2014-Fall
Country	Canada
City	Vancouver
Period	14/9/14 → 14/9/17

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Access to Document

10.1109/VTCFall.2014.6966231

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Window functions for frame correlation reduction in overlapped FFT based energy detection. / Takai, Ryo; Uchida, Shoya; Sanada, Yukitoshi.

2014 IEEE 80th Vehicular Technology Conference, VTC2014-Fall, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2014. 6966231 (IEEE Vehicular Technology Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Takai, R, Uchida, S & Sanada, Y 2014, Window functions for frame correlation reduction in overlapped FFT based energy detection. in 2014 IEEE 80th Vehicular Technology Conference, VTC2014-Fall, Proceedings., 6966231, IEEE Vehicular Technology Conference, Institute of Electrical and Electronics Engineers Inc., 80th IEEE Vehicular Technology Conference, VTC 2014-Fall, Vancouver, Canada, 14/9/14. https://doi.org/10.1109/VTCFall.2014.6966231

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abstract = "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 which 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.",

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