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Αποτελέσματα 1-10 από 29
State space estimation of a wireless frequency-selective fading channel in Gaussian noise
(2002)
This paper investigates the possibility of using the state space optimal estimation techniques to estimate the inphase, quadrature and square envelope of a wireless multipath fading channel when the transmitted signal is ...
Fuel-optimal trajectories for aeroassisted coplanar orbital transfer problem
(Publ by IEEE, 1988)
The optimal-control problem arising in coplanar orbital transfer using aeroassist technology is addressed. The maneuver involves the transfer from high earth orbit to low earth orbit with minimum fuel consumption. Simulations ...
Model-based fault detection in power systems
(2006)
In this paper, we propose an on-line monitoring scheme to detect lost lines and bus load changes on an embeded power system. The proposed monitoring scheme does not rely on classical estimation schemes used in power systems; ...
Robust coding for uncertain sources: A minimax approach
(2005)
This paper is concerned with designing minimum average length uniquely decodable codes, for a family of source distributions for which the relative entropy with respect to a given nominal distribution is bounded above by ...
Detuning detection in induction motors
(2004)
In this article we present a model-based scheme to detect detuned indirect field oriented controllers in current fed induction motors. The detection scheme is based on differential geometric techniques. Numerical simulations ...
Near optimal wireless data broadcasting based on an unsupervised neural network learning algorithm
(2001)
Wireless Data Broadcasting (WDB) is proven to be an efficient information delivery mechanism of nearly unlimited scalability. However, successful performance of a WDB based system is not always guaranteed - it strongly ...
Compact, linear, lead/lag phase shifters using negative refractive index metamaterials
(2003)
A new type of phase shifter using cascaded sections of NRI metamaterials and PRI transmission lines is proposed, which offers some significant advantages over conventional delay lines. The phase shifter is compact in size, ...
Soft-decision decoding of linear block codes using preprocessing
(2004)
Two universally applicable preprocessing rules to improve iterative recoding algorithms, which utilize the most reliable basis (MRB), while focusing on order-w reprocessing, was investigated. The first preprocessing rule ...
Feedback control utilizing packet dropping network links
(2002)
The increasing availability of network connectivity has prompted the study of computer-based control methodologies that are implemented centrally or distributively using existing network infrastructure as the communications ...
Soft-decision decoding of linear block codes using efficient iterative G-space encodings
(2001)
This paper proposes a sub-optimal maximum likelihood decoding algorithm for linear block codes. Given reliability information about each bit in the received word, our approach initially finds the set of most reliable "basis" ...