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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/8130
Title: Blind estimator for time delays in multipath acoustic channel-estimator performance vs. noise and number of multipath
Authors: Nath R.
Chaturvedi, Ajit Kumar
Sharma G.
Published in: International Journal of Signal and Imaging Systems Engineering
Abstract: A Modified Blind Estimator (Modified Autocorrelation-based Estimator - MAE) algorithm is presented for estimation of time delays in multipath acoustic channel in the presence of uncorrelated noise. Here, the multipath acoustic channel output signal is modelled as a superposition of the delayed, attenuated and filtered versions of the stationary Gaussian stochastic input signal. Different performance measures have been introduced to characterise the performance of the estimator. The simulation results show that MAE performance approaches the equivalent Cramer-Rao Lower Bound (CRLB) in terms of Accuracy Percentage (AP) measures, APcrlb, in the high Signal to Noise Ratio (SNR) ranges. Furthermore, it is observed from simulations that when the SNR increases or the number of paths decreases the performance of MAE improves. Copyright © 2011 Inderscience Enterprises Ltd.
Citation: International Journal of Signal and Imaging Systems Engineering (2011), 4(1): 13-20
URI: https://doi.org/10.1504/IJSISE.2011.039180
http://repository.iitr.ac.in/handle/123456789/8130
Issue Date: 2011
Keywords: Acoustic channel
Autocorrelation-based estimator
Multipath
Time delay estimator
ISSN: 17480698
Author Scopus IDs: 57190370017
9333507700
7202756992
Author Affiliations: Nath, R., Department of Electrical Engineering, National Institute of Technology Hamirpur, Hamirpur 177005, India
Chaturvedi, A.K., Department of Electrical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
Sharma, G., Department of Electrical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
Corresponding Author: Nath, R.; Department of Electrical Engineering, National Institute of Technology Hamirpur, Hamirpur 177005, India; email: nath@nith.ac.in
Appears in Collections:Journal Publications [ECE]

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