With the ever increasing popularity of wireless internet, its scale is broadening. While the IEEE 802.15 standard provides the parameters necessary for a wireless personal area network (WPAN), the IEEE 802.16a standard provides broadband wireless access (BWA), or a wireless metropolitan area network (WMAN). Popularly referred to as Wi Max, the standard uses cellular topography with a base station and subscriber station and cuts down on infrastructure and thus can be used in most environments. The 802.16a standard can take advantage of the popular OFDM modulation technique. This thesis takes a developed synchronization algorithm and tests its performance on 802.16a. In addition, it tests the standard's performance in different types of channel. Various techniques are evaluated including interleaving and antenna diversity. The 802.16a standard employs a form of transmit diversity called Space Time Coding. The transmit diversity is compared with Maximal Ratio Combining receiver diversity. The evaluation was done in simulation developed in Matlab; the simulations show drastic improvement when using the aforementioned techniques, particularly diversity.

This research analyzes the design and implementation of a Maritime Command, Control, Computer, and Communications for Intelligence, Surveillance, and Reconnaissance (C4ISR) fly away kit (FLAK) in order to combat asymmetric threats in the coalition maritime environment. This FLAK will be modular, adaptable, scalable, and secure end to end, composed of routable networks, and built entirely from commercial off the shelf technologies (COTS). Basing measures of effectiveness (MOE) on the recently published Quadrennial Defense Report (QDR) and the Numbered Fleet Commanders Communication Message, these kits will be tested with the goal of fulfilling thirteen of the fifteen high priority short-falls in the modern United States CIV-MIL and Coalition Forces' abilities to conduct multiple missions in the current brown (riverine), green (littoral), and blue (deep water) operational theatres. The Maritime FLAK will be designed with the intent of increasing the US forward presence and extending the C4ISR into restricted maritime theatres. Since US forces cannot intervene directly into regions like the Straits of Malacca, but can support coalition forces through advisors and technological adaptations, modular solutions to extend C4ISR into these maritime territories are needed. Furthermore, due to the adaptability and scalability of the technologies to be implemented into the maritime FLAK, these completed kits will be able to be used by the recently formed Naval Expeditionary Combat Command (NECC) in current operations in the Global War on Terrorism. / US Navy (USN) author.

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Approved for public release, distribution is unlimited / Wireless mesh networking has emerged as the successor of the traditional ad hoc networks. New technological advances, the standardization of protocols and interfaces and the maturity of key components have made it possible for current mesh research groups to set goals that are really close to the world's expectations. The objective of this research is to design and implement a simulation toolkit for wireless mesh clusters that can be used as an additional performance evaluation technique for the Tactical Network Topology program of Naval Postgraduate School. This toolkit is implemented in the OPNET simulation environment and it incorporates various nodes running different ad hoc routing protocols. Furthermore, the investigation of a suitable combination of protocols for the Tactical Network Topology is achieved by creating scenarios and running a number of simulations using the mesh toolkit. / Captain, Hellenic Air Force