Presentation 2014-03-10
Spectrum Sensing of OFDM Pilot Signal with Carrier-frequency-offset Correction and Symbol Synchronization by Maximal Ratio Combining
Toshihiro YOSHITAKE, Yohtaro UMEDA, Yusuke KOZAWA,
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Abstract(in English) In this paper, spectrum sensing sensitivity of OFDM pilot signal using maximal ratio combining has been evaluated by simulation with carrier frequency offset correction (CFO) and symbol synchronization (SS). For dynamic spectrum access of cognitive radio systems, the spectrum sensing method using OFDM pilot signal has low complexity and high sensitivity in signal detection. However, the sensitivity of the method has been deteriorated by carrier frequency offset because sub carrier frequency interval for OFDM is narrow. This paper therefore evaluates the spectrum sensing sensitivity of OFDM pilot signal by taking into account the influence of CFO error and SS error. As a result, the spectrum sensing sensitivity of OFDM pilot signal with both CFO error and SS error is about 8 dB lower than that without both CFO error and SS error. However, spectrum sensing of OFDM pilot signal with both CFO error and SS error can improve to more than about 9.5 dB compared with spectrum sensing of energy detection.
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Keyword(in English) cognitive radio / dynamic spectrum access / signal detection / IEEE802.11a / carrier frequency offset correction / symbol synchronization
Paper # IT2013-62,ISEC2013-91,WBS2013-51
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Committee ISEC
Conference Date 2014/3/3(1days)
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Registration To Information Security (ISEC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Spectrum Sensing of OFDM Pilot Signal with Carrier-frequency-offset Correction and Symbol Synchronization by Maximal Ratio Combining
Sub Title (in English)
Keyword(1) cognitive radio
Keyword(2) dynamic spectrum access
Keyword(3) signal detection
Keyword(4) IEEE802.11a
Keyword(5) carrier frequency offset correction
Keyword(6) symbol synchronization
1st Author's Name Toshihiro YOSHITAKE
1st Author's Affiliation Graduate School of Science and Technology, Tokyo University of Science()
2nd Author's Name Yohtaro UMEDA
2nd Author's Affiliation Graduate School of Science and Technology, Tokyo University of Science
3rd Author's Name Yusuke KOZAWA
3rd Author's Affiliation Graduate School of Science and Technology, Tokyo University of Science
Date 2014-03-10
Paper # IT2013-62,ISEC2013-91,WBS2013-51
Volume (vol) vol.113
Number (no) 484
Page pp.pp.-
#Pages 6
Date of Issue