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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.
51

Deployable combat simulations via wireless architectures /

Lock, Jeffrey S. January 2004 (has links) (PDF)
Thesis (M.S. in Computer Science)--Naval Postgraduate School, March 2004. / Thesis advisor(s): Dr. Rudolph Darken, CDR Joseph Sullivan. Includes bibliographical references (p. 79-80). Also available online.
52

Performance evaluation of a cooperative diversity enhanced ad hoc network /

Tope, Michael A. January 2002 (has links) (PDF)
Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2002. / Thesis advisor(s): John C. McEachen, R. Clark Robertson, Daniel M. Rosser. Includes bibliographical references (p. 73-75). Also available online.
53

MIMO-aware Medium Access Control in IEEE 802.11 Networks

Ashtaiwi, ABDULADHIM 27 January 2009 (has links)
Wireless Mesh Networks (WMNs) are dynamically self-organized and self-configured, where the nodes in the network automatically establish an ad hoc network and maintain mesh connectivity. These properties make WMNs a key technology for next generation wireless networking. However, supporting Quality of Service (QoS) to enable multimedia services is still one of the major issues in next-generation WMNs. In distributed systems like WMNs, the Medium Access Control (MAC) layer is considered very important in the IEEE 802.11-based wireless networks, as it supports many crucial operational functions. Hence, QoS support in WMNs can be enhanced through the efficient cross-layer design of MAC protocols that utilizes advanced physical layer technologies viz Multiple-Input Multiple-Output (MIMO) with its multiple spatial channels that are capable of simultaneous receive or transmit streams. MIMO has become a very attractive technology in providing support for different QoS requirements. In this thesis we propose a novel QoS MIMO-aware MAC Protocol (QMMP). QMMP is a MAC protocol framework that exploits the MIMO system gains to boost QoS support. The proposed MAC framework includes the following components. The first component enables concurrent sharing of the increased MIMO bandwidth, i.e., instead of allocating all the spatial channels to one connection, connections can concurrently share the increase bandwidth via splitting the spatial channels. The second component reduces the medium access collisions problem. In distributed systems like WMNs, medium access collisions have a noticeably negative impact on resource (bandwidth) utilization as they leave the bandwidth unutilized for a long time. To address this problem, we propose a spatial channels sharing scheme during medium contention period. The third component boosts the bandwidth utilization during data transmission. We propose resource management schemes that adapt the physical data rate and the aggregation frame length according to the instantaneous channel quality. Then we propose a QoS-aware bandwidth provisioning mechanism that performs effective bandwidth distribution to further boost QoS support. / Thesis (Ph.D, Electrical & Computer Engineering) -- Queen's University, 2009-01-26 10:11:16.729
54

Analysis and optimization of MAC protocols for wireless networks /

Shu, Feng. January 2007 (has links)
Thesis (Ph.D.)--University of Melbourne, Dept. of Electrical and Electronic Engineering, 2007. / Typescript. Includes bibliographical references (leaves 141-156).
55

Rate adaptation and resource allocation for wireless networks /

Xia, Qiuyan. January 2008 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2008. / Includes bibliographical references (leaves 133-143). Also available in electronic version.
56

Opportunistic routing in multihop wireless networks : capacity, energy efficiency, and security

Zeng, Kai. January 2008 (has links)
Dissertation (Ph.D.)--Worcester Polytechnic Institute. / Keywords: opportunistic routing; security; energy efficiency; medium access control; capacity; throughput. Includes bibliographical references (leaves 192-201).
57

Adaptive transmit power control based on signal strength and frame loss measurements for WLANs

Viswanathan, Hariharasudhan, January 2009 (has links)
Thesis (M.S.)--Rutgers University, 2009. / "Graduate Program in Electrical and Computer Engineering." Includes bibliographical references (p. 47-48).
58

Simulation of wireless propagation in a high-rise building /

Boukraa, Lotfi. January 2004 (has links) (PDF)
Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, Dec. 2004. / Thesis Advisor(s): David C. Jenn. Includes bibliographical references (p. 75-76). Also available online.
59

Denial of service vulnerabilities in IEEE 802.16 wireless networks /

Boom, Derrick D. January 2004 (has links) (PDF)
Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, September 2004. / Thesis advisor(s): Rex Buddenberg. Includes bibliographical references (p. 69-70). Also available online.
60

QoS provisioning for IEEE 802.11 MAC protocols

Ge, Ye. January 2004 (has links)
Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xiii, 97 p.; also includes graphics (some col.). Includes bibliographical references (p. 94-97).

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