Title :
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
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;
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
DOI :
10.1109/ICSPCS.2008.4813709
