UScholar Works
 
Filters: Date: "2006" Department: "Electrical & Computer Engineering" Collection: "ir_uspace"
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CreatorTitleDescriptionSubjectDate
1 Mathews, V. JohnA stable adaptive Hammerstein filter employing partial orthogonalization of the input signalsAbstract-This paper presents an algorithm that adapts the parameters of a Hammerstein system model. Hammerstein systems are nonlinear systems that contain a static nonlinearity cascaded with a linear system. In this paper, the static nonlinearity is modeled using a polynomial system, and the linear ...2006
2 Stevens, KennethAlgorithms for MIS vector generation and pruningIgnoring the effect of simultaneous switching for logic gates causes silicon failures for high performance microprocessor designs. The main reason to omit this effect is the run time penalty and potential over-conservatism. Run times are directly proportional to the vector sizes. Efficient algorithm...2006
3 Furse, Cynthia M.; Cotter, Neil E.Challenges in curriculum adaptation across institutions of higher education: international and national student transferThe challenges associated with student transfer between institutions of higher education are investigated. The Utah System of Higher Education (USHE) requires that undergraduate courses from non-ABET accredited institutions are recognized across public universities and colleges in Utah Based on empi...2006
4 Mathews, V. JohnDesign of low-delay nonuniform pseudo QMF banksABSTRACT This paper presents a method for designing low-delay nonuniform pseudo QMF banks. The method is motivated by the work of Li, Nguyen and Tantaratana, in which the nonuniform filter bank is realized by combining an appropriate number of adjacent subbands of a uniform pseudo QMF filter ban...2006
5 Stringfellow, Gerald B.Effects of surfactants Sb and Bi on the incorporation of zinc and carbon in III/V materials grown by organometallic vapor-phase epitaxyThe incorporation of both dopants and background impurities during the organometallic vapor phase epitaxial _x0002_OMVPE_x0003_ growth of GaAs, GaInP, and GaP has been significantly altered by the use of the surfactants Sb and Bi. Sb and Bi are isoelectronic with the group V host elements, and so ...Physical and chemical processes; Surfactants isoelectronic; Electrochemical C-V profilometry2006
6 Mathews, V. JohnHowling suppression in hearing aids using least-squares estimation and perceptually motivated gain controlABSTRACT Howling is a significant problem even in digital hearing aids equipped with adaptive feedback cancellation. Among the many causes of howling is the inability of the adaptive filter to track rapid changes in the feedback path. Many systems use howling detectors to detect the start of howlin...2006
7 Myers, Chris J.ILP-based scheduling for asynchronous circuits in bundled-data implementationIn this paper, we propose a new scheduling method for asynchronous circuits in bundled-data implementation. The method is based on integer linear programming (ILP) which explores an optimum schedule under resource or time constraints. To schedule descriptions with many operations,our method approx...2006
8 Furse, Cynthia M.; Farhang, Behrouz; Richardson, StephanieIntegrated system-level design in electrical engineeringThis paper describes an NSF-sponsored department level curriculum reform project in the Electrical and Computer Engineering Department at the University of Utah. The project focuses on developing system-level design projects (mostly labs, but a few software-only projects) that integrate ideas within...Curriculum reform; Electrical and Computer Engineering Department; Integrated system-level design2006
9 Myers, Chris J.Learning genetic regulatory network connectivity from time series dataAbstract. Recent experimental advances facilitate the collection of time series data that indicate which genes in a cell are expressed. This paper proposes an efficient method to generate the genetic regulatory network inferred from time series data. Our method fi_x000C_rst encodes the data into le...2006
10 Tasdizen, Tolga; Awate, Suyash P.; Whitaker, Ross T.Model-based image reconstruction for dynamic cardiac perfusion MRI from sparse dataThe paper presents a novel approach for dynamic magnetic resonance imaging (MRI) cardiac perfusion image reconstruction from sparse k-space data. It formulates the reconstruction problem in an inverse-methods setting. Relevant prior information is incorporated via a parametric model for the perfusi...2006
11 Furse, Cynthia M.Noncontact probes for wire fault location with reflectometryThis paper describes an approach to locate wire faults using reflectometry without physical contact with the wire conductor. This noncontact method is capable of locating faults on both dead and live powered wires with today's reflectometry technologies, and it does not require any modification or ...Wire fault location; Noncontact probes; Reflectometry; Capacitive coupling; Inductive coupling; Aging aircraft wire2006
12 Harrison, Reid R.Polymer based thin film coils as a power module of wireless neural interfacesFor the conventional Utah Electrode Array (UEA) to be able to function without transcutaneous wire connections, a kind of power source is needed in an integrated form with the UEA. To develop such wireless neural interfaces, inductive coupling between two coils was used to deliver power to the integ...Wireless; Neural interfaces; Thin film coils; Utah Electrode Array2006
13 Harrison, Reid R.Power minimization of a 433-MHz LC VCO for an implantable neural recording systemThis paper presents a new random-search based integrated inductor optimization algorithm. The algorithm provides the designer with valuable information about design tradeoffs. it is used to design an inductor to minimize power dissopation in an LC VCO. The measured results show that a 53:1 power sav...2006
14 Harrison, Reid R.Power, clock, and data recovery in a wireless neural recording deviceFor many medical applications, neural recording systems should be fully implantable. Transcutaneous wires must be compleley eliminated, and this necessitates the wireless transfer of power, clock and configuration data to the device. We have developed, fabricated, and tested cirucits that recover po...2006
15 Furse, Cynthia M.Selection criteria of test signals for correlation-based wire fault analysis (preprint)This paper compares reflectometry signals for location of intermittent faults on live electrical cables. STDR, SSTDR, linear chirp, quadratic chirp, concave-up chirp, convex-down chirp and all frequency randomized phase noise signals were tested. The SSTDR was observed to be the most effective sig...2006
16 Harrison, Reid R.Signal amplification, detection and transmission in a wireless 100-electrode neural recording systemWe are developing a fully-implantable neural recording system with wireless power and data transfer. As part of this system, we have developed a low-power integrated circuit that performs power rectification and and regulation, reception of configuration data, neural signal amplification and filt...2006
17 Mathews, V. JohnStochastic mean-square performance analysis of an adaptive Hammerstein filterAbstract-This paper presents an almost sure mean-square performance analysis of an adaptive Hammerstein filter for the case when the measurement noise in the desired response signal is a martingale difference sequence. The system model consists of a series connection of a memoryless nonlinearity fol...2006
18 Mathews, V. JohnSubband particle filtering for speech enhancementABSTRACT Particle filters have recently been applied to speech enhancement when the input speech signal is modeled as a time-varying autoregressive process with stochastically evolving parameters. This type of modeling results in a nonlinear and conditionally Gaussian statespace system that is not ...2006
19 Myers, Chris J.Verification of timed circuits with failure-directed abstractionsAbstract-This paper presents a method to address state explosion in timed-circuit verification by using abstraction directed by the failure model. This method allows us to decompose the verification problem into a set of subproblems, each of which proves that a specific failure condition does not oc...2006
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