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

Content Provider	IEEE Xplore Digital Library
Author	Odani, Hiroyuki Sanada, Yukitoshi
Copyright Year	2014
Description	Author affiliation: Dept. of Electronics and Electrical Engineering, Keio University, Yokohama, Japan (Odani, Hiroyuki; Sanada, Yukitoshi)
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.
Starting Page	001
Ending Page	006
File Size	879079
Page Count	6
File Format	PDF
ISBN	9781479961207
DOI	10.1109/ISPACS.2014.7024414
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-12-01
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Correlation Signal detection Integrated circuits Correlators Wireless communication Noise
Content Type	Text
Resource Type	Article

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