Now showing items 1-10 of 1258
Resilient Waveform Design for OFDM-MIMO Communication Systems
(Virginia Tech, 2015-10-23)
This dissertation addresses physical layer security concerns, resiliency of the Orthogonal Frequency Division Multiplexing (OFDM) and the Multiple Input Multiple Output (MIMO) systems; the `de-facto' air-interface of most ...
A Guidance Algorithm for Unmanned Surface Vehicle Exhibiting Sternward Motion
(Virginia Tech, 2013-11-11)
We propose a new dynamically feasible trajectory generation algorithm that incorporates sternward motion for unmanned surface vehicles. This work is motivated by riverine applications where the operating environment is ...
False lock in sampled-data phase lock loops.
(Virginia Tech, 1968-08-13)
Co-channel interference rejection using a model-based demodulator
(Virginia Tech, 1995)
Low Power IC Design with Regulated Output Voltage and Maximum Power Point Tracking for Body Heat Energy Harvesting
(Virginia Tech, 2016-07-14)
As wearable technology and wireless sensor nodes become more and more ubiquitous, the batteries required to power them have become more and more unappealing as they limit lifetime and scalability. Energy harvesting from ...
Time-varying Small Antennas for Wideband Applications
(Virginia Tech, 2013-12-18)
A desirable goal in wireless communication systems is to achieve a high-rate data transmission through electrically small antennas. However, the overall transmission bandwidth is limited by the antenna size. As a well-known ...
Nonlinear analysis of eddy-current couplings in feedback control systems
(Virginia Polytechnic Institute, 1966)
Service-Oriented Architecture based Cloud Computing Framework For Renewable Energy Forecasting
(Virginia Tech, 2014-03-10)
Forecasting has its application in various domains as the decision-makers are provided with a more predictable and reliable estimate of events that are yet to occur. Typically, a user would invest in licensed software or ...
Ionospheric Simulator (IonSim) : Simulating Ionospheric conditions in a vacuum chamber
(Virginia Tech, 2013-10-29)
Understanding and improving ionospheric models is important for both military and civilian purposes. This understanding improves prediction of radio propagation used for communication and GPS navigation. Various space-borne ...
Using Decoys as a Resiliency Mechanism in Spectrally Harsh DSA Environments
(Virginia Tech, 2014-03-07)
As wireless communication mediums develop and Dynamic Spectrum Access (DSA) is implemented as a means to increase capacity on a limited spectrum, the threat of reactive interference becomes real. The motivation for this ...