Delayed Correlation Based Signal Detection Scheme with Filter Bank for OFDM Signal
Summary :
Delayed correlation has been used to detect orthogonal frequency division multiplexing symbols with cyclic prefix in spectrum sensing. Because of the frequency offset, the outputs of the delayed correlation do not lie only on the 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 the noise variance. This paper proposes a new delayed correlation scheme that uses a filter bank and employs the absolute of the outputs of delayed correlation. 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 the probability of detection of 0.9.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E98-B No.7 pp.1381-1389
- Publication Date
- 2015/07/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E98.B.1381
- Type of Manuscript
- PAPER
- Category
- Terrestrial Wireless Communication/Broadcasting Technologies
Authors
Hiroyuki ODANI
Keio University
Shoya UCHIDA
Keio University
Ryo TAKAI
Keio University
Yukitoshi SANADA
Keio University
Keyword
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Hiroyuki ODANI, Shoya UCHIDA, Ryo TAKAI, Yukitoshi SANADA, "Delayed Correlation Based Signal Detection Scheme with Filter Bank for OFDM Signal" in IEICE TRANSACTIONS on Communications,
vol. E98-B, no. 7, pp. 1381-1389, July 2015, doi: 10.1587/transcom.E98.B.1381.
Abstract: Delayed correlation has been used to detect orthogonal frequency division multiplexing symbols with cyclic prefix in spectrum sensing. Because of the frequency offset, the outputs of the delayed correlation do not lie only on the 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 the noise variance. This paper proposes a new delayed correlation scheme that uses a filter bank and employs the absolute of the outputs of delayed correlation. 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 the probability of detection of 0.9.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.1381/_p
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@ARTICLE{e98-b_7_1381,
author={Hiroyuki ODANI, Shoya UCHIDA, Ryo TAKAI, Yukitoshi SANADA, },
journal={IEICE TRANSACTIONS on Communications},
title={Delayed Correlation Based Signal Detection Scheme with Filter Bank for OFDM Signal},
year={2015},
volume={E98-B},
number={7},
pages={1381-1389},
abstract={Delayed correlation has been used to detect orthogonal frequency division multiplexing symbols with cyclic prefix in spectrum sensing. Because of the frequency offset, the outputs of the delayed correlation do not lie only on the 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 the noise variance. This paper proposes a new delayed correlation scheme that uses a filter bank and employs the absolute of the outputs of delayed correlation. 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 the probability of detection of 0.9.},
keywords={},
doi={10.1587/transcom.E98.B.1381},
ISSN={1745-1345},
month={July},}
Copy
TY - JOUR
TI - Delayed Correlation Based Signal Detection Scheme with Filter Bank for OFDM Signal
T2 - IEICE TRANSACTIONS on Communications
SP - 1381
EP - 1389
AU - Hiroyuki ODANI
AU - Shoya UCHIDA
AU - Ryo TAKAI
AU - Yukitoshi SANADA
PY - 2015
DO - 10.1587/transcom.E98.B.1381
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2015
AB - Delayed correlation has been used to detect orthogonal frequency division multiplexing symbols with cyclic prefix in spectrum sensing. Because of the frequency offset, the outputs of the delayed correlation do not lie only on the 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 the noise variance. This paper proposes a new delayed correlation scheme that uses a filter bank and employs the absolute of the outputs of delayed correlation. 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 the probability of detection of 0.9.
ER -
English
