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Diffraction by Building Corners at 28 Ghz: Measurements and Modeling
(Virginia Tech, 1998-06-03)
This thesis presents the results of a 28 GHz continuous-wave (CW) diffraction measurement campaign in the Washington, DC area. It describes the measurement approach including information on equipment and testing methods. ...
IVDS System: Channel Simulation and Repeater Unit Design
(Virginia Tech, 1996-03-01)
In this thesis, an Interactive Video Data Service (IVDS) is developed. This service provides a mechanism for television viewers to interact with the program they are watching. Possible interactions include purchasing ...
On-Line Transient Stability Analysis of a Multi-Machine Power System Using the Energy Approach
(Virginia Tech, 1997-07-15)
This thesis investigates and develops a direct method for transient stability analysis using the energy approach [1] and the Phasor Measurement Units (PMUs). The originality of this new method results from a combination ...
Adaptive Control using IIR Lattice Filters
(Virginia Tech, 1998-04-24)
This work is a study of a hybrid adaptive controller that blends fixed feedback control and adaptive feedback control techniques. This type of adaptive controller removes the requirement that information about the disturbance ...
Electronic Signal Processing in an Optical Fiber-Based Magnetometer
(Virginia Tech, 1997-09-11)
Conventional Extrinsic Fabry-Perot Interferometric (EFPI) sensors have been used to measure a variety of physical parameters like temperature, pressure and strain. A modified version of this geometry is successfully ...
Adaptive Equalization for Indoor Channels
(Virginia Tech, 1998-08-03)
This thesis describes the use of adaptive equalization techniques to compensate for the intersymbol interference (ISI) that results when digital data is transmitted over a multipath radio channel. The equalization structures ...
A Scaleable FIR Filter Implementation Using 32-bit Floating-Point Complex Arithmetic on a FPGA Base Custom Computing Platform
(Virginia Tech, 1998-01-30)
This thesis presents a linear phase finite impulse response filter implementation developed on a custom computing platform called WILDFORCE. The work has been motivated by ways to off-load intensive computing tasks to ...
Modified Space Vector Modulation for a Zero-Voltage Transition Three-Phase to DC Bi-directional Converter
(Virginia Tech, 1995-04-01)
A modified space vector modulation algorithm for a zero-voltage transition three-phase voltage source inverter/boost rectifier is presented. The converter is intended for high performance medium power applications requiring ...
Development of Web-Based Educational Modules for Testing VHDL Models of Digital Systems
(Virginia Tech, 1997-08-06)
The exponential growth of the World Wide Web (WWW) on the Internet and accompanying WWW browsers has promoted opportunities for new methods of teaching and learning. Teaching does not simply involve presenting textual ...
A Comprehensive In-Building and Microcellular Wireless Communication System Design Tool
(Virginia Tech, 1997-06-09)
Indoor wireless communication systems are becoming increasingly prevalent in work environments. The need to quickly and efficiently provide in-building and microcellular coverage without sacrificing quality is critical ...