Delayed correlation based signal detection scheme with filter bank for OFDM signal

Hiroyuki Odani; Yukitoshi Sanada

doi:10.1109/ISPACS.2014.7024414

Delayed correlation based signal detection scheme with filter bank for OFDM signal

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

Abstract

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 paper proposes a new delayed correlation scheme using the filter bank and taking the absolute value 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 for the probability of detection of 0.9.

Original language	English
Title of host publication	2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1-6
Number of pages	6
ISBN (Print)	9781479961207
DOIs	https://doi.org/10.1109/ISPACS.2014.7024414
Publication status	Published - 2014 Jan 27
Event	2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014 - Kuching, Sarawak, Malaysia Duration: 2014 Dec 1 → 2014 Dec 4

Other

Other	2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
Country/Territory	Malaysia
City	Kuching, Sarawak
Period	14/12/1 → 14/12/4

ASJC Scopus subject areas

Artificial Intelligence
Computer Networks and Communications
Signal Processing

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10.1109/ISPACS.2014.7024414

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Delayed correlation based signal detection scheme with filter bank for OFDM signal. / Odani, Hiroyuki; Sanada, Yukitoshi.
2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 1-6 7024414.

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

Odani, H & Sanada, Y 2014, Delayed correlation based signal detection scheme with filter bank for OFDM signal. in 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014., 7024414, Institute of Electrical and Electronics Engineers Inc., pp. 1-6, 2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014, Kuching, Sarawak, Malaysia, 14/12/1. https://doi.org/10.1109/ISPACS.2014.7024414

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abstract = "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 paper proposes a new delayed correlation scheme using the filter bank and taking the absolute value 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 for the probability of detection of 0.9.",

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Delayed correlation based signal detection scheme with filter bank for OFDM signal

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