Naval Postgraduate School
Theses and Dissertations
Now showing items 1-10 of 62
Link analyses and LPD/AJ strategies for IEEE 802.16a
(Monterey, California. Naval Postgraduate School, 2007-12)
In military operations, covertness of operation is of paramount importance. The transmission power
of the data link must be kept to the minimum to maintain a low probability of detection (LPD) from the
adversary. However, ...
Performance comparison of two implementations of TCM for QAM
(Monterey, California. Naval Postgraduate School, 2007-12)
Trellis-Coded Modulation (TCM) is employed with quadrature amplitude modulation (QAM) to provide error correction coding with no expense in bandwidth. There are two common implementations of TCM, namely pragmatic TCM and ...
Implementation of Configurable Fault Tolerant Processor (CFTP) experiments
(Monterey California. Naval Postgraduate School, 2006-12)
The Configurable Fault Tolerant Processor (CFTP) team at Naval Postgraduate School (NPS), Monterey, was created to develop, test, and implement reliable computing solutions for the space environment. The CFTP team seeks ...
A galvanically isolated power converter module for DC Zonal Electric Distribution Systems
(Monterey, California. Naval Postgraduate School, 2006-03)
The United States Navy is currently in a state of transition from mechanical to electric propulsion. Future warships, such as the new destroyer class, will contain an Integrated Power System (IPS) that provides power to ...
Modeling, simulation and implementation of a non-coherent binary-frequency-shift-keying (BFSK) receiver-transmitter into a field programmable gate array (FPGA)
(Monterey, California. Naval Postgraduate School, 2005-09)
This thesis presents the use of a field programmable gate array (FPGA) to implement a non-coherent binary-frequency-shift-keyed receiver-transmitter (BFSK-RT) that simulates the modulation of the SINCGARS radio, the ...
Closed loop control of a cascaded multi-level converter to minimize harmonic distortion
(Monterey, California. Naval Postgraduate School, 2005-06)
As the United States Navy moves toward the all-electric ship, the need for a robust, high fidelity inverter for propulsion motors becomes mandatory. Military vessels require high power converters capable of producing ...
Propagation modeling of wireless systems in shipboard compartments
(Monterey California. Naval Postgraduate School, 2005-03)
In today's navy, it is becoming more and more important to reach all areas onboard a ship with key technical resources. In order to accomplish this goal, the already existing physical networks need to be complemented with ...
A virtual RSNS direction finding antenna system
(Monterey, California. Naval Postgraduate School, 2004-12)
In this thesis, a performance analysis and improvement of a phase sampling interferometer antenna system based on the Robust Symmetrical Number System (RSNS) in the presence of noise is investigated. Previous works have ...
Simulation of wireless propagation in a high-rise building
(Monterey California. Naval Postgraduate School, 2004-12)
With the introduction of wireless Local Area Networks (WLANs) in many organizations, it became much easier to intercept confidential files and personal health records. The present study focused on radio frequency propagation ...
A comparison of frequency offset estimation methods in Orthogonal Frequency Division Multiplexing (OFDM) systems
(Monterey California. Naval Postgraduate School, 2004-12)
OFDM is a modulation technique that achieves high data rates, increased bandwidth efficiency and robustness in multipath environments. However, OFDM has some disadvantages, such as sensitivity to channel fading, large peak ...
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