Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, Sept. 2004. / Thesis advisor(s): Tri T. Ha, Randy L. Borchardt. Includes bibliographical references (p. 89). Also available online.

Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, Sept. 2004. / Thesis advisor(s): Alex Bordetsky. Includes bibliographical references (p. 89-93, 95-99). Also available online.

Thesis (M.S. in Computer Science and M.S. in Engineering Science (EE))--Naval Postgraduate School, June 2002. / Thesis advisor(s): Xiaoping Yun, Baer Wolfgang. Includes bibliographical references (p. 57-58). Also available online.

Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 2002. / Thesis advisor(s): R. Clark Robertson, Roberto Cristi. Includes bibliographical references (p. 93-94). Also available online.

Thesis (M.S.)--University of Florida, 2005. / Title from title page of source document. Document formatted into pages; contains 80 pages. Includes vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Florida, 2005. / Title from title page of source document. Document formatted into pages; contains 150 pages. Includes vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Sydney, 2008. / Includes tables. Includes list of publications. Title from title screen (viewed October 30, 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Electrical and Information Engineering, Faculty of Engineering and Information Technologies. Includes bibliographical references. Also available in print form.

Approved for public release; distribution is unlimited / 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. The pulsed interference is assumed to have constant average power and is either fading or nonfading. The probability of bit error is conditional on the received signal-to-noise power ratio, which is modeled as a random variable. The probability density function of this random variable is obtained either analytically or numerically for each modulation type, and the probability of bit error is evaluated as the expected value of the conditional probability. In one case, use is made of a new technique for the numerical inverse of the Laplace transform in order to evaluate numerically the signal-to-noise ratio probability density function. Due to the complexity of the analysis when both the signal and the interference are subject to Ricean fading, the analysis was simplified by assuming Ricean signal fading with Rayleigh interference fading and vice versa. The results of the analysis show that performance is affected by the degree of signal fading and also depends on the pulsed interference duty cycle. The signal-to-interference power ratio affects the way performance depends on these two factors. / Captain, Hellenic Air Force

Approved for public release, distribution is unlimited / With the rapid employment of wireless networks commercially, the military is seeking viable solutions for providing high-speed wireless network throughout the battle space. The IEEE 802.11a wireless LAN presents an attractive solution pro-viding up to 54 Mbps data-link bandwidth. Moreover, it operates in the less congested 5-GHz U-NII band and possesses more operating channels. This research implemented two prototype systems using low-cost commercially available hardware. The Cisco Ai-ronet 1400 wireless bridge and the Proxim Tsunami MP. 11a wireless system were chosen for their superior specifications and for their reputation of being market leaders in IEEE 802.11 wireless products. The performances of the prototype systems were evaluated in three operational environments (land, water and vegetation). The data collected were then compared to the theo-retical performance. / Civilian, Ministry of Defense, Singapore

Approved for public release; distribution is unlimited. / The Institute of Electrical and Electronics Engineers' new 802.16 standard is set to revolutionize the delivery of Broadband Wireless Access (BWA), much as the 802.11 "Wi-Fi" standard transformed wireless access to Local Area Networks. The standard describes a set of Medium Access Controls (MAC) and Air Interfaces that cover a broad range of broadcast frequencies and applications. As a result, manufacturers are developing 802.16 compliant equipment for high speed point-to-point circuits and point-to-multipoint circuits dubbed Wireless Metropolitan Area Networks (WMANs). These networks can span several miles and contain hundreds of subscribers. Shortly after 802.11 "Wi-Fi" systems became widespread, several serious Denial of Service (DoS) vulnerabilities inherent to the standard were discovered. This thesis examines the MAC layer of the 802.16 standard to determine whether these types of denial of service vulnerabilities are also present in the new standard. Also examined are vulnerabilities that may be unique to the 802.16 standard. / Lieutenant, United States Navy