Signal interception in non-Gaussian noise

Author

Izzo, Luciano ; Paura, Luigi ; Tanda, Mario

Author_Institution

Dipartimento di Ingegneria Elettronica, Napoli Univ., Italy

Volume

40

Issue

6

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

1030

Lastpage

1037

Abstract

The interception of weak signals in nonGaussian noise is discussed. The spectral correlation property exhibited by all cyclostationary signals is exploited to synthesize multi-cycle and single-cycle detectors which assure a superior tolerance (as compared to radiometric techniques) to one of the most challenging problems in interception, namely accommodating unknown and changing noise level and interference activity. The proposed detectors perform a maximum likelihood estimate of the noise level and use the estimate to form the detection statistic. To obtain some analytical information about the performance of the multi-cycle and single-cycle detectors, the deflection, which is a useful measure of the output (signal-to-noise ratio), especially appropriate for weak-signal SNR interception, has been evaluated. The receiver operating characteristics, carried out via computer simulation, confirm the superiority of the proposed cycle detector with respect to the traditional radiometer

Keywords

correlation methods; interference; noise; signal detection; changing interference; changing noise level; cyclostationary signals; detection statistic; maximum likelihood estimate; multi-cycle detectors; nonGaussian noise; receiver operating characteristics; signal detection; signal-to-noise ratio; single-cycle detectors; spectral correlation property; weak-signal SNR interception; Detectors; Information analysis; Interference; Maximum likelihood detection; Maximum likelihood estimation; Noise level; Radiometry; Signal synthesis; Signal to noise ratio; Statistics;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.142793

Filename

142793