Thesis (PhD)--University of South Australia, 1996

Thesis (M.S. in Telecommunications Systems Management)--Naval Postgraduate School, March 1992. / Thesis Advisors: Boger, Dan C. ; Stevens, Louis D. "March 1992." Includes bibliographical references (p. 66-67). Also available in print.

Thesis (Ph. D.)--University of Washington, 1998. / Vita. Includes bibliographical references (leaves [95]-102).

Thesis (M.S. in electrical engineering)--Washington State University, May 2009. / Title from PDF title page (viewed on Apr. 8, 2010). "School of Electrical Engineering and Computer Science." Includes bibliographical references (p. 52-55).

Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 140-147). Available also in a digital version from Dissertation Abstracts.

Thesis (M.S.)--Rochester Institute of Technology, 1995. / Typescript. Includes bibliographical references (leaves 60-64).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1982. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 145-153).

The purpose of this thesis was to investigate some of the issues related to routing and medium access control protocol in ad hoc networks. In routing protocol, the goal is to tackle the power consumption problem and to present a case for using new cost energy-aware metric for Ad Hoc On-Demand Distance Vector (AODV). The idea of the new cost metric is to be able to avoid routes with a low energy capacity. By using this approach, high efficiency in energy consumption can be achieved in Ad-Hoc networks. The second goal of this thesis was to investigate the blocking problem induced by Request-to-Send/Clear-to-Send (RTS/CTS) mechanism in detail and provide a solution to overcome that problem. To do so, a new parameter is proposed by which the Medium Access control (MAC) protocol will decide when to switch between RTS/CTS mechanism (the 4-way-handshaking) and the Basic Access method (the 2-way-handshaking) in order to reduce the effect of the blocking problem in Ad Hoc networks.

M.Ing. (Electrical and Electronic Engineering) / Since the beginning of telecommunications. more than 100 years ago, systems have been developed through a constant interaction between technical inventions. economic applications and the desire for improved communication facilities to such an extend that there is now a highly efficient communication network whichspans over the entire globe. The still growing demand for data communication. on conventional channels such ascoaxial cables and twisted pairs. made it necessary to develop systems which make use of line codes. In developing countries. like South-Africa. it is not economically feasible to change the existing analog systems to digital systems to enable data communications. In this study. we have done research into the possibility of combining ananalog speech signal with a digital data channel. Ideally the data channel should make use of line codes with low power contents at low frequencies. so that an analog speech channel can be inserted. Different coding methods were used to construct simple encoders and decoders which generate sequences with low power content at low frequencies. The experimental setup used in this thesis. showed that these new line codes exhibit low frequency suppression to such an extend that an analog speech channel can be inserted without the one interfering with the another.

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