Presentation 2014-05-23
Delayed Correlation Based Signal Detection Scheme with Filter Bank for OFDM Signal
HIROYUKI Odani, SHOYA Uchida, RYO Takai, YUKITOSHI Sanada,
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Abstract(in English) Delayed correlation has been used as a signal detection scheme for an orthogonal frequency devision multiplexing symbol with a cyclic prefix in spectrum sensing. Because of a frequency offset, the outputs of the delayed correlation do not lay only on a real axis of a complex plane. Therefore, the absolute value of the outputs of the delayed correlation is employed. Furthermore, with the use of a filter bank, the number of the outputs of the delayed correlators increases and the averaging over the outputs decreases noise variance. This report proposes a new delayed correlation based signal detection scheme using the filter bank and taking the absolute value of the outputs of delayed correlation. Numerical results obtained through computer simulation show that the proposed scheme improves the probability of detection as the number of the branches of the delayed correlators increases. In the case of 6 branches the proposed scheme reduces the required sample energy by 1dB for the probability of detection of 0.9.
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Keyword(in English) Spectrum Sensing / Delayed correlation
Paper # SR2014-17
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Conference Date 2014/5/15(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Delayed Correlation Based Signal Detection Scheme with Filter Bank for OFDM Signal
Sub Title (in English)
Keyword(1) Spectrum Sensing
Keyword(2) Delayed correlation
1st Author's Name HIROYUKI Odani
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 RYO Takai
3rd Author's Affiliation Dept. of Electronics and Electrical Engineering, Keio University
4th Author's Name YUKITOSHI Sanada
4th Author's Affiliation Dept. of Electronics and Electrical Engineering, Keio University
Date 2014-05-23
Paper # SR2014-17
Volume (vol) vol.114
Number (no) 44
Page pp.pp.-
#Pages 7
Date of Issue