Results 71 to 80 of about 18,485,845 (167)

Multiuser MIMO Receiver Processing for Time-Varying Channels

, 2011
Wireless broadband communications for mobile users at vehicular speed is the cornerstone of future fourth-generation systems. This chapter deals with joint iterative channel estimation and multiuser detection for the uplink of a multicarrier (MC) code ...
Thomas Zemen, Dumard, Charlotte,, Joakim Jaldén, Charlotte Dumard, Zemen, Thomas,, Jaldén, Joakim,   +5 more
core   +1 more source

Input-to-state stability for parameterized discrete-time time-varying nonlinear systems with applications

, 2005
Input-testate stability (ISS) of a parameterized familyof discrete-time time-varying nonlinear systems isinvestigated. A converse Lyapunov theorem for such systems is developed.
Laila, Dina Shona, Astolfi, A., Astolfi, Alessandro   +2 more
core   +1 more source

Time-Varying Modal Parameters Identification by Subspace Tracking Algorithm and Its Validation Method

Shock and Vibration, 2018
This article presents a time-varying modal parameter identification method based on the novel information criterion (NIC) algorithm and a post-process method for time-varying modal parameter estimation.
Haotian Zhou, Kaiping Yu, Yushu Chen, Rui Zhao, Yunhe Bai   +4 more
doaj   +1 more source

Investigation of a Generalized Frequency Domain Method for Modeling Time-Varying Loads on Antennas [PDF]

, 2019
Within traditional antenna design, the behavior of the antenna can be dictated by its physical dimensions and their proportions to a wavelength. Traditional electrically small antennas in particular face many limitations on factors such as their gain ...
Palmer, Ashley
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A Time-Varying Generalised Minimum Variance Controller

, 2008
:- A generalised minimum variance controller is developed for linear time-varying systems. The plants to be controlled are described using a controlled autoregressive moving average model and are exponentially stable.
Z. Li, Und Prozessinformatik, A Time-varying Generalised, Zheng Li, Lehrstuhl Für Automatisierungstechnik, Chr Schmid, Christian Schmid, Ruhr-universität Bochum   +7 more
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Time-varying modal parameters identification of large flexible spacecraft using a recursive algorithm

, 2016
In existing identification methods for on-orbit spacecraft, such as eigensystem realization algorithm (ERA) and subspace method identification (SMI), singular value decomposition (SVD) is used frequently to estimate the modal parameters.
Ni ZY(倪智宇), Wu SN(邬树楠), Wu ZG(吴志刚)   +2 more
core  

Formation Consensus Control Method With Time-Varying Parameters Based on Virtual Leader

International Journal of Aerospace Engineering
A method of formation pattern alternation and consistent flight control in complex battlefield environment is put forward, considering the single formation pattern during formation flight and failing to deal with the changeable battlefield environment ...
Hongyun Wang, Xiwei Guo, Wenzhao Li, YaQin Li, Weiwei Gao   +4 more
doaj   +1 more source

Is exponential stability achievable in singular perturbed delayed systems with time-varying parameters? A comprehensive analysis

Heliyon
The present article conducts an investigation into the phenomenon of exponential stability within singular perturbed delayed systems, incorporating time-varying parameters.
Ran Chen, Min Ouyang, Jinju Zhang, Fatemeh Masoudinia   +3 more
doaj   +1 more source

A General Algorithm for Simultaneous Estimation of Constant and Randomly-Varying Parameters in Lineal Relations [PDF]

A recursive algorithm for estimating linear models with both constant and time-varying parameters is derived by maximization of a likelihood function.
Alexander H. Sarris
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Value-at-Risk Calculations with Time Varying Copulae [PDF]

Value-at-Risk (VaR) of a portfolio is determined by the multivariate distribution of the risk factors increments. This distribution can be modelled through copulae, where the copulae parameters are not necessarily constant over time. For an exchange rate
Enzo Giacomini, Wolfgang Härdle
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