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Teamdec: a Group Decision Support System
(Virginia Tech, 1998-07-29)
TEAMDEC is a Group Decision Support System (GDSS). The development of a GDSS is supported by a broad spectrum of theories and techniques. Two major aspects of GDSS development were considered in TEAMDEC design: HCI and ...
EMI Characterization and Improvement of Bi-Directional DC/DC Converters
(Virginia Tech, 1999-09-14)
A worldwide awareness of the environment is accelerating fuel cell vehicle development. With respect to power electronics, special requirement is on the development of high efficiency, high voltage ratio bi-directional ...
A High Performance DSP Based System Architecture for Motor Drive Control
(Virginia Tech, 1993-05-01)
This paper presents a high speed digital signal processor (DSP) based system architecture for motor drive control. The system achieves fast speed performance by using the 50 MHz TMS320C25 DSP and specialized digital hardware ...
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 ...
A Propagation Simulator for Land Mobile Satellite Communications
(Virginia Tech, 1998-04-24)
The performance of a mobile satellite communications link can be determined by the propagation path between a satellite and mobile users. Some of the most important factors are multipath propagation and vegetative shadowing. ...
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 ...
Analysis of Thermally Diffused Single Mode Optical Fiber Couplers
(Virginia Tech, 1994-12-22)
The phenomenon of dopant diffusion as a viable means of coupler fabrication is
investigated. It is well known that the diffusion of dopants can improve the uniformity of
multimode star couplers manufactured by the fused ...
Evaluation of TDOA Techniques for Position Location in CDMA Systems
(Virginia Tech, 1997-08-06)
The Federal Communications Commission (FCC) has adopted regulations requiring wireless communication service providers to provide position location (PL) information for a user requesting E-911 service. The Time Difference ...
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 ...