Topic
Transfer function
About: Transfer function is a research topic. Over the lifetime, 14362 publications have been published within this topic receiving 214983 citations. The topic is also known as: system function & network function.
Papers published on a yearly basis
Papers
More filters
TL;DR: A pulse-shaping technique that allows for spectrally resolved splitting of an input signal to multiple output ports, giving similar flexibility to a Field Programmable Gate Array (FPGA) in electronics.
Abstract: We demonstrate a pulse-shaping technique that allows for spectrally resolved splitting of an input signal to multiple output ports. This ability enables reconfigurable creation of splitters with complex wavelength-dependent splitting ratios, giving similar flexibility to a Field Programmable Gate Array (FPGA) in electronics. Our technique can be used to create reprogrammable optical (interferometric) circuits, by emulating their multi-port spectral transfer functions instead of the traditional method of creating an interferometer by splitting and recombining the light with an added delay. We demonstrate the capabilities of this technique by creating a Mach-Zehnder interferometer, an all-optical discrete Fourier transform filter, two nested Mach-Zehnder interferometers and a complex splitter with a triangular-shaped response.
57 citations
TL;DR: This paper presents a meta-analyses of the design and Analysis and Synthesis of SD Systems Under Stochastic Excitation, and the design of SD systems for 0 < t < ?
Abstract: Algebraic Preliminaries.- Polynomial Matrices.- Fractional Rational Matrices.- Normal Rational Matrices.- General MIMO Control Problems.- Assignment of Eigenvalues and Eigenstructures by Polynomial Methods.- Fundamentals for Control of Causal Discrete-time LTI Processes.- Frequency Methods for MIMO SD Systems.- Parametric Discrete-time Models of Continuous-time Multivariable Processes.- Mathematical Description, Stability and Stabilisation of the Standard Sampled-data System in Continuous Time.- Analysis and Synthesis of SD Systems Under Stochastic Excitation.- H2 Optimisation of a Single-loop Multivariable SD System.- -Design of SD Systems for 0 < t < ?.
57 citations
21 Jun 1989
TL;DR: In this article, the authors studied feedback control of linear time-invariant singularly perturbed systems of the form? = A 11 x + A 12 z + B 1 u + B 2 u y = C 1 x + C 2 z + Eu where Eu may be singular.
Abstract: This paper studies feedback control of linear time-invariant singularly perturbed systems of the form ? = A 11 x + A 12 z + B 1 u ? = A 21 x + A 22 z + B 2 u y = C 1 x + C 2 z + Eu. where A 22 may be singular. It is shown that, under stabilizability-detectability assumptions on the slow and fast models, the theory of feedback control of singularly perturbed systems can be extended to the case of singular A 22 . Both state and output feedback results are given.
57 citations
TL;DR: The authors propose a generalization of the well known Wiener-Hopf design method of optimal controllers and filters, applicable to a certain class of systems described by fractional order differential equations, the so called rational order systems that, in the Laplace domain, are described by transfer functions which are quotients of polynomials in salpha.
Abstract: In this note, the authors propose a generalization of the well known Wiener-Hopf design method of optimal controllers and filters, applicable to a certain class of systems described by fractional order differential equations, the so called rational order systems that, in the Laplace domain, are described by transfer functions which are quotients of polynomials in salpha, alpha = (1 /q), q being a positive integer As can be verified in the literature, such transfer functions arise in the characterization of some industrial processes and physical systems which can be adequately modeled using fractional calculus, or when modeling some distributed parameter systems by finite dimensional models A brief exposition of the standard Wiener-Hopf method, and some fundamental considerations about rational order systems are given before presenting the proposed procedure Illustrative examples are discussed
57 citations
Patent•
15 Apr 2003
TL;DR: In this article, an adaptive subcarrier loading function for a mobile receiver in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM) is provided to predict the channel transfer function of a multipath propagation channel being severely impaired by frequency-selective fading and an extremely time-variant behavior by detecting the position and/or movement of zero points of the transfer function.
Abstract: Wireless communication systems are provided with an adaptive subcarrier loading function for a mobile receiver in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM) that can advantageously be applied to predict the channel transfer function of a multipath propagation channel being severely impaired by frequency-selective fading and an extremely time-variant behavior by detecting the position and/or movement of zero points of the transfer function, thereby reducing the probability of incorrect assignment of the modulation scheme for each subcarrier caused by mobile terminals moving at high velocity The zero points of the estimated channel transfer function are determined by detecting the position of deep notches on the associated amplitude response of the measured channel transfer function caused by frequency-selective fading whose depths are larger than a predefined threshold
57 citations