Maximum Likelihood estimation of time delays in multipath acoustic channel

Author

Bhardwaj, Tarkeshwar Prasad ; Nath, Ravinder

Author_Institution

Dept. of Electr. Eng., Nat. Inst. of Technol., Hamirpur

fYear

2008

fDate

15-17 Dec. 2008

Firstpage

1

Lastpage

4

Abstract

A maximum likelihood (ML) estimator is developed for determining time delays in multipath acoustic channel in the presence of uncorrelated noise. The performance of the ML estimator is compared with a generalized autocorrelation estimator (GAE) and Cramer-Rao lower bound (CRLB) for resolvable multipath, via computer simulation. Simulation results show that the performance of the ML estimator is superior to the GAE and is close to CRLB.

Keywords

acoustic noise; delays; maximum likelihood estimation; multipath channels; Cramer-Rao lower bound; computer simulation; generalized autocorrelation estimator; maximum likelihood estimation; multipath acoustic channel; time delays; uncorrelated noise; Acoustic emission; Acoustic noise; Application software; Attenuation; Autocorrelation; Delay effects; Delay estimation; Maximum likelihood estimation; Signal resolution; Telephony; Maximum-Likelihood estimation; acoustic channel; multipath; time delay estimator;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Communication Systems, 2008. ICSPCS 2008. 2nd International Conference on

Conference_Location

Gold Coast

Print_ISBN

978-1-4244-4243-0

Electronic_ISBN

978-1-4244-4243-0

Type

conf

DOI

10.1109/ICSPCS.2008.4813709

Filename

4813709