Title :
A nonparametric approach to signal detection in impulsive interference
Author :
Brown, C.L. ; Zoubir, Abdelhak M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Curtin Univ. of Technol., Perth, WA
fDate :
9/1/2000 12:00:00 AM
Abstract :
Impulsive interference poses a challenge to conventional detection techniques. The α-stable distribution, while sometimes providing a good model for impulsive interference, has proven to be no exception. Some of these difficulties have motivated the investigation and development of computationally tractable, locally suboptimum correlation, and rank correlation detectors for signals embedded in impulsive interference modeled as a symmetric α-stable process. The performance of some of these detectors is evaluated and compared with that of the locally optimum (LO), locally optimum rank (LOR), matched filter, and Cauchy detectors. Simulation results show that a rank-based detector is able to approach the performance of the computationally intensive LO and LOR detectors across a range of values for for α
Keywords :
Gaussian distribution; correlation methods; digital simulation; filtering theory; impulse noise; interference (signal); matched filters; nonparametric statistics; numerical stability; optimisation; signal detection; α-stable distribution; Cauchy detector; Gaussian distribution; Monte Carlo simulations; ROC curves; computationally tractable correlation detector; detector performance; impulsive interference; locally optimum detector; locally optimum rank detector; locally suboptimum correlation detector; matched filter detector; nonparametric approach; rank correlation detector; rank-based detector; receiver operating characteristic curves; signal detection; simulation results; symmetric α-stable process; Australia; Computational modeling; Detectors; Embedded computing; Interference; Matched filters; Signal analysis; Signal detection; Signal processing; Telecommunication computing;
Journal_Title :
Signal Processing, IEEE Transactions on