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论文类型： 期刊论文

发表时间： 2007-03-01

发表刊物： Journal of China University of Mining and Technology

收录刊物： EI

卷号： 17

期号： 1

页面范围： 30-34

ISSN号： 10061266

摘要： The non-Gaussian α-stable distribution is introduced to model impulsive noise. Based on the theory of fractional lower order statistics (FLOS), the fractional lower order cross-covariance (FLOCC) sequence for two re-ceived signals is obtained and the fractional lower order cross-covariance spectrum (FLOCCS) can be approached by taking a Fourier transform for the FLOCC sequence. When the FLOCCS is treated as a sequence in the time domain, the problem of multipath time delay estimation (TDE) may be converted into one on multi-frequencies estimation or di-rections of arrival estimation. Accordingly, the high resolution multipath TDE can be realized with the ESPRIT tech-nology. This idea on multipath TDE is referred to as FLOCCS-ESPRIT in this paper. Computer simulations show that this method has good performance both in a Gaussian noise and in an impulsive noise environment. © 2007 The Journal of China University of Mining & Technology.