Browsing by Subject "Wavelet analysis"
Now showing items 1-6 of 6
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A simple cross correlation switched beam system (XSBS) for angle of arrival estimation
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)We propose a practical, simple and hardware friendly, yet novel and efficient, angle of arrival (AoA) estimation system. Our intuitive, two-phases cross-correlation-based system requires a switched beam antenna array with ... -
Denoising of acoustic partial discharge signals corrupted with random noise
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Power transformers are one of the most important and expensive electrical equipment that require online condition monitoring. Partial discharge (PD) measurement is considered the most effective and non-destructive approach ... -
Detecting the greedy spectrum occupancy threat in cognitive radio networks
( IEEE Computer Society , 2014 , Conference Paper)Recently, security of cognitive radio (CR) is becoming a severe issue. There is one kind of threat, which we call greedy spectrum occupancy threat (GSOT) in this paper, has long been ignored in previous work. In GSOT, a ... -
Diversification potential of Asian frontier, BRIC emerging and major developed stock markets: A wavelet-based value at risk approach
( Elsevier B.V. , 2017 , Article)This study examines the portfolio risk and the co-movements between each of the BRIC emerging and South Asian frontier stock markets and each of the major developed stock markets (U.S., UK and Japan), using the wavelet ... -
Investigation of gas-liquid flow using electrical resistance tomography and wavelet analysis techniques for early kick detection
( American Society of Mechanical Engineers (ASME) , 2021 , Conference Paper)Gas kick is a well control problem and is defined as the sudden influx of formation gas into the wellbore. This sudden influx, if not controlled, may lead to a blowout problem. An accidental spark during a blowout can lead ... -
On the detection and estimation of correlated signal using circular antenna arrays
( IEEE , 2011 , Conference Paper)This paper presents the design and analysis of smart antenna systems used for the detection and estimation of correlated radio signals encountered in multipath environments using circular antenna arrays. The MUSIC algorithm ...