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• W3113704212 abstract "The power-spectrum sub-band energy ratio (PSER) has been applied in a variety of fields, but reports on its statistical properties and application in signal detection have been limited. Therefore, the statistical characteristics of the PSER were investigated and a signal detection method based on the PSER was created in this paper. By analyzing the probability and independence of power spectrum bins, as well as the relationship between F and beta distributions, we developed a probability distribution for the PSER. Our results showed that in a case of pure noise, the PSER follows beta distribution. In addition, the probability density function exhibited no relationship with the noise variance—only with the number of bins in the power spectrum. When Gaussian white noise was mixed with the signal, the resulting PSER followed a doubly non-central beta distribution. In this case, the probability density and cumulative distribution functions were represented by infinite double series. Under the constant false alarm strategy, we established a signal detector based on the PSER and derived the false alarm probability and detection probability of the PSER. The main advantage of this detector is that it did not need to estimate noise variance. Compared with time-domain energy detection and local spectral energy detection, we found that the PSER had better robustness under noise uncertainty. Finally, the results in the simulation and real signal showed that this detection method was valid." @default.
• W3113704212 created "2021-01-05" @default.
• W3113704212 creator A5002829025 @default.
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• W3113704212 date "2020-12-31" @default.
• W3113704212 modified "2023-10-16" @default.
• W3113704212 title "Signal Detection Based on Power-Spectrum Sub-Band Energy Ratio" @default.
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• W3113704212 doi "https://doi.org/10.3390/electronics10010064" @default.
• W3113704212 hasPublicationYear "2020" @default.
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