Naval Postgraduate School
Theses and Dissertations
Now showing items 1-10 of 40
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 performance of multiple-input multiple-output systems employing single-carrier modulation and orthogonal frequency division multiplexing
(Monterey California. Naval Postgraduate School, 2004-12)
This thesis investigates the simulation performance of multiple-input multiple-output (MIMO) systems utilizing Alamoutibased space-time block coding (STBC) technique. The MIMO communication systems using STBC technique ...
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 ...
Simulations of diversity techniques for urban UAV data links
(Monterey, California. Naval Postgraduate School, 2004-12)
In urbanized terrain, radiowave propagation is subjected to fading on large-scales and smallscales that would impede on the quality and reliability of data link transmission. This would have implications in many military ...
Digital phased array architectures for radar and communications based on off-the-shelf wireless technologies
(Monterey, California. Naval Postgraduate School, 2004-12)
This thesis is a continuation of the design and development of a three-dimensional 2.4 GHz digital phased array radar antenna. A commercial off-the-shelf quadrature modulator and demodulator were used as phase shifters in ...
A low-cost man-portable free-space optics communication device for Ethernet applications
(Monterey California. Naval Postgraduate School, 2004-12)
This thesis sought to design and implement a low-cost, portable, Free-Space Optics (FSO) communications device for Ethernet applications. Under some circumstances such a device would have utility at a Combat Operations ...
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 ...
A novel approach to modeling the effects of radiation in Gallium-Arsenide solar cells using Silvaco's atlas software
(Monterey, California. Naval Postgraduate School, 2004-09)
The effects of radiation in GaAs solar cells has been extensively researched and the results of numerous investigation have yielded a considerable amount of information about the degradation in irradiated solar cells. This ...
Development of Code for a Physical Optics Radar Cross Section prediction and analysis application
(Monterey California. Naval Postgraduate School, 2004-09)
The significance of the Radar Cross Section (RCS) in the outcome of military engagements makes its prediction an important problem in modern Electronic Warfare. The POFACETS program, previously developed at the Naval ...
Performance analysis of wireless LAN signals transmitted over a ricean fading channel in a pulsed-noise preference environment
(Monterey California. Naval Postgraduate School, 2004-09)
This thesis examines the performance of the waveforms specified by the IEEE 802.11a wireless local area network standard when the signal is transmitted over a Ricean fading channel with AWGN and pulsed-noise interference. ...
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