Title :
Wavelet denoising of signals based on the fourth order moment
Author :
Hippenstiel, Ralph ; Mantis, Spiros
Author_Institution :
Dept. of Electr. & Comput. Eng., Naval Postgraduate Sch., Monterey, CA, USA
Abstract :
In many applications the localization of a wireless communications transmitter is important. Localization of a mobile wireless communication unit using the time difference of arrival (TDOA) method is addressed. The localization of a GSM type emitter is enhanced by using denoised time domain signals. Denoising is obtained by thresholding the wavelet detail coefficients in time and the application of a fourth order moment criterion in scale. The performance, as a function of SNR and mean squared error for the TDOA is obtained
Keywords :
cellular radio; delay estimation; direction-of-arrival estimation; interference suppression; mean square error methods; radio transmitters; signal processing; time-domain analysis; wavelet transforms; GSM type emitter denoised time domain signals; SNR; TDOA method; fourth order moment criterion; mean squared error; mobile wireless communication unit; thresholding; time difference of arrival method; wavelet denoising; wavelet detail coefficients; wireless communications transmitter; Application software; Base stations; Delay estimation; FCC; GSM; Noise reduction; Signal processing; Transmitters; Wavelet transforms; Wireless communication;
Conference_Titel :
Signal Processing and its Applications, Sixth International, Symposium on. 2001
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6703-0
DOI :
10.1109/ISSPA.2001.949853
