C. E. Chen, F. Lorenzelli, R. E. Hudson, K. Yao
We investigate the maximum likelihood (ML) direction-of-arrival (DOA) estimation of multiple wideband sources in the presence of unknown nonuniform sensor noise. New closed-form expression for the...
C. E. Chen, F. Lorenzelli, R. E. Hudson, K. Yao
We investigate the maximum likelihood (ML) direction-of-arrival (DOA) estimation of multiple wideband sources in the presence of unknown nonuniform sensor noise. New closed-form expression for the...
Analysis, Implementation, and Application of Acoustic and Seismic Arrays (2006)
Stafsudd, J.Z, Asgari, Shadnaz, Chen, Chiao-En, Hudson, Ralph E., Lorenzelli, F., Yao, K, ...
In this paper, we consider the analysis, implementation, and application of wideband sources using both seismic and acoustic sensors. We use the approximate maximum likelihood (AML) algorithm to...
Chen, Chiao-En, Ali, Andreas M, Lorenzelli, F., Hudson, Ralph E., Yao, K
We propose a novel algorithm employing particle filters for acoustic source tracking in a reverberant environment. By incorporating the likelihood function computed through Approximate...
Acoustic Source DOA Estimation using the Cross-Entropy Method (SYS 14) (2006)
C.E. Chen, F. Lorenzelli, R.E. Hudson, K. Yao
This paper deals with the problem of estimating the Direction-of-Arrivals (DOAs) of multiple wideband sources using an array of sensors. While a variety of estimation techniques have been proposed in...
Distributed Gauss-Newton Methodology for Node Localization in Wireless Sensor Networks (2005)
Cheng, Bing Hwa, Hudson, Ralph E., Lorenzelli, F., Vandenberghe, Lieven, Yao, K
We present distributed algorithms for sensor localization based on the Gauss-Newton method. Each sensor updates its estimated location by computing the Gauss-Newton step for a local cost function and...
Localization based on acoustic and seismic array processing (2005)
J.Z. Stafsudd, S. Asgari, C.E. Chen, A. Ali, R. E. Hudson, F. Lorenzelli, ...
In this poster, we consider the analysis, implementation, and application of wideband sources using both seismic and acoustic sensors. We use the AML algorithm to perform acoustic DOA. For...
C. E. Chen, H. Wang, F. Lorenzelli, R.E. Hudson, K. Yao
Tracking a moving acoustic source in a reverberant room is a challenging problem since reverberation can cause spurious peaks in localization functions, and thus generate false estimates of source...
SIP1: Acoustic Source and Wireless Sensor Node Localizations (2005)
A. Ali, S. Asgari, C.E. Chen, B.W. Cheng, R.E. Hudson, F. Lorenzelli, ...
In many sensor network applications, the localization of an emitting acoustic source as well as those of sensor nodes is of importance. In this poster, we first tackle the localization of the...
A fully pipelined RLS-based array for channel equalization (1996)
Marc Moonen, Esat Katholieke, K. Yao, F. Lorenzelli
It is shown that several recursive least squares (RLS) type equalization algorithms such as, e.g., decision-directed schemes and `orthogonalized' constant modulus algorithms, possess a common...
LORENZELLI, F., TESTA, L., VISINTIN, M., BIGLIERI, E., PENT, M.
Le contenu de cet article est une étude comparative des effets de deux systèmes pour la régénération de porteuse dans la modulation numérique de phase à quatre niveaux sans codage et à huit...