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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Improving fairness in the 802.11 infrastructure wireless local area networks /

Lin, Xiaoyang. January 2005 (has links)
Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2005. / Includes bibliographical references (leaves 59-63). Also available in electronic version.

Wireless LAN extension

Tay, Chye Bin 03 1900 (has links)
Approved for public release; distribution is unlimited / The proliferation of laptop computers within the organization combined with increasing need to mobilize the labor force have fuelled the demand for wireless networks. Until recently, wireless technology was a patchwork of incompatible systems from a variety of vendors. The technology was slow, expensive and used for mobile applications or environments where cabling was impractical or impossible. With the maturing of industry standards and the deployment of lightweight wireless networking hardware across a broad market section, wireless technology has come of age. Lowered prices and interoperability have attracted many organizations to the idea, especially in the retail, financial, education, and health-care fields. The availability of wireless networking and wireless Local Area Networks (LANs) can extend the freedom and mobility of a network user, solve various problems associated with hard-wired networks and even reduce network deployment costs in some cases. This thesis provides an introduction to wireless LAN technology and the wireless LAN design for the Software Metrics Laboratory in Ingersoll 158, with particular emphasis on the communication requirements and protocols for the implementation of the wireless LAN extension to the existing wired LAN. / Lieutenant Colonel, Republic of Singapore Air Force

Utilising power capture for service differentiation in wireless LANs

Nyandoro, Alfandika, Computer Science & Engineering, Faculty of Engineering, UNSW January 2006 (has links)
In recent years, wireless communication systems have become pervasive, allowing continuous connectivity for people on the move, at home and in the workplace. The advent of third generation (3G) systems with capabilities beyond traditional telephony, and the explosive uptake of wireless Local Area Networks (LANs) are but two factors that have contributed to this growth. By virtue of their appeal to the market, wireless LANs have proven to be a serious contender as the access technology of choice for traditional data as well as the emerging 3G networks. If wireless LANs are to be successful as an access technology, however, the issue of Quality of Service (QoS) support will need to be addressed. QoS support for wireless LANs is becoming increasingly important because applications requiring such support, e.g. voice and video, are becoming more common in today's hybrid wireless systems, with the trend expected to grow into the future. The dominant standard for wireless LANs is the IEEE's 802.11 of which the contention-based Medium Access Control (MAC) protocol; also known as the Distributed Coordination Function (DCF), is universally supported. While the DCF is widely supported, it provides no QoS support. In this work, we propose and study a new and different mechanism of achieving service differentiation in 802.11 wireless LANs. Our approach employs the capture effect as the vehicle for achieving QoS differentiation for the contention mode of the standard. This approach enriches current research efforts by providing another dimension to QoS provisioning in wireless LANs. Hitherto most proposals have focussed on the modification of some aspect of the protocol, such as the minimum contention window size (CWmin), the Distributed Inter-Frame Space (DIFS), or the maximum contention window size (CWmax), amongst others. Capture based service differentiation complements these efforts. It can be used alone or in conjunction with existing approaches to provide additional priority classes. In this thesis, the capture based service differentiation approach is proposed and studied through Markov chain modelling and simulation. From the study, the following conclusions were drawn. It was confirmed that capture based service differentiation is a feasible approach in wireless LANs and that it can be achieved with practical and sustainable power differences between the transmitters from different classes. A number of factors were found to influence the level of service differentiation, including the population ratios of hosts in the power classes, the power ratios of the transmitters as well as the capture threshold of the receiver. For practical considerations, a complete architectural framework is also proposed, including support functions such as Transmission Power Control (TPC), QoS Signalling and Admission Control.

Efficient placement and routing algorithms for maximizing the lifetimes of wireless sensor networks /

Patel, Maulin, January 2006 (has links)
Thesis (Ph. D.)--University of Texas at Dallas, 2006. / Includes vita. Includes bibliographical references (leaves 101-103).

Prototype system for detecting and processing of IEEE 802.11a signals /

Goh, Che Seng. January 2004 (has links) (PDF)
Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, March 2004. / Thesis advisor(s): Tri T. Ha. Includes bibliographical references (p. 68). Also available online.

Performance analysis of the IEEE 802.11A WLAN standard optimum and sub-optimum receiver in frequency-selective, slowly fading Nakagami channels with AWGN and pulsed noise jamming /

Kalogrias, Christos. January 2004 (has links) (PDF)
Thesis (M.S. in Electrical Engineering and M.S. in Systems Engineering)--Naval Postgraduate School, March 2004. / Thesis advisor(s): Clark Robertson. Includes bibliographical references (p. 143). Also available online.

Computer wireless networks : a design plan for building wireless networks using IEEE 802.11 standard /

Almantheri, Hamed. January 2003 (has links) (PDF)
Thesis (M.S. in Computer Science)--Naval Postgraduate School, March 2003. / Thesis advisor(s): Bert Lundy, Richard Riehle. Includes bibliographical references (p. 77-79, 81). Also available online.

Evaluation of secure 802.1X port-based network access authentication over 802.11 wireless local area networks /

Ozturk, Huseyin Selcuk. January 2003 (has links) (PDF)
Thesis (M.S. in Computer Science)--Naval Postgraduate School, March 2003. / Thesis advisor(s): Geoffrey Xie, John Gibson. Includes bibliographical references (p. 171-172). Also available online.

Wireless LAN extension /

Tay, Chye Bin. January 2003 (has links) (PDF)
Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, March 2003. / Thesis advisor(s): Norman F. Schneidewind, Douglas E. Brinkley. Includes bibliographical references (p. 67). Also available online.

An improved media access control protocol for wireless LANs a thesis submitted to Auckland University of Technology in partial fulfilment of the requirements of the degree of Master of Information Technology, 2004.

Lian, Jason Hailin. January 2004 (has links) (PDF)
Thesis (M Info Tech) -- Auckland University of Technology, 2004. / Also held in print (100 leaves, 30 cm.) in Wellesley Theses Collection (T 004.68 LIA)

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