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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.

Four-dimensional Q2PSK modulation and coding for mobile digital communication

Van Wyk, Daniel Jacobus. January 2000 (has links)
Thesis (M.Eng.)(Electronic)--University of Pretoria, 2000. / Includes summary. Title from opening screen as viewed 5th November 2005. Includes bibliographical references.

Adaptive equalisation techniques for future mobile communications

Wu, Jianjun January 1996 (has links)
No description available.

Mobile phone based remote monitoring system a thesis submitted to Auckland University of Technology in fulfilment of the degree of Master of Engineering (ME), 2008.

Liu, Danyi. January 2008 (has links)
Thesis (ME--Engineering) -- AUT University, 2008. / Includes bibliographical references. Also held in print (xvii, 113 leaves : ill. ; 30 cm.) in Archive at City Campus (T 635.028546 LIU)

A study of adoption and switching behavior - mobile phone service market in Hong Kong /

Kwok, Mei Hing. Unknown Date (has links)
Thesis (PhDBusinessManagement)--University of South Australia, 2002.

The third generation mobile phone market in China : an analysis of its development and forecasts about its future

Zhang, Lei Unknown Date (has links)
This thesis has used several recent secondary research reports on the subject of 3G markets as a starting point to analyse and assess the market for the new 'third generation' 3G mobile phones in China.Mobile communications is moving forward from where we are today into the Information Society of third generation services that will deliver speech, data, pictures, graphics, video communication and other wideband information direct to people on the move.A key objective of this thesis is to assess the expected future market for 3G mobile in China by means of a market analysis, the examination of current forecasts and likely future scenarios.The effect of telecommunications policy is analyzed in detail. A qualitative research approach is used involving the interviewing of industry experts to ascertain their perspectives and visions for the 3G market in China.To clarify the analysis for readers, a 3G mobile simulator (attached in CD form) is included. It introduces 3G services in a visual form with the aim of assisting the understanding of the service analyses and forecasts. As this is a thesis with a practical component, the simulator is also put forward as a tool to assist service providers to sell the features of the new technology to consumers 3G Mobile Simulator.

Towards a role framework for mobile devices in educational contexts.

Anwar, Kazi Arif. January 2009 (has links)
Thesis (M.A.)--University of Toronto, 2009. / Source: Masters Abstracts International, Volume: 48-02, page: .

An improved system for text entry on cell phones /

Pennell, Deana Lynne, January 2007 (has links)
Thesis (M.S.)--University of Texas at Dallas, 2007. / Includes vita. Includes bibliographical references (leaves 71-72)

Adoption of cellular telephone technologies and services : user perceptions and motivations in the United States (Hawaii) and South Korea

Kwon, Hyosun January 1996 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 1996. / Includes bibliographical references (leaves 162-170). / Microfiche. / xii, 170 leaves, bound ill. 29 cm

Access channels for mobile banking applications : a comparative study based on characteristics

Schwenke, Freddie January 2009 (has links)
Thesis (MTech (Information Technology))--Cape Peninsula University of Technology, 2009 / The objective of this research project was to provide an answer to the question: 'Which access channel is the most appropriate for mobile applications?' This question is posed by providers of mobile banking services and providers of mobile banking applications alike.

Simulation of multistage detector for spread-spectrum applications

Bais, Viraj Kumar 23 December 2009 (has links)
The conventional single-user correlation receiver is not optimized for use with a multiple-access channel shared by users transmitting asynchronously independent data streams by modulating a set of assigned signal waveforms with low mutual cross-correlations. Furthermore, the performance is severely degraded as the number of users in a radio-network with fixed bandwidth grows or as the relative powers of the interfering signals become large, as in the "near-far" problem. The optimum multiuser detector based on a dynamic programming algorithm has substantially better performance, but has a variable decoding delay and is computationally intensive due to the NP-hardness of the problem of computing the most likely sequence of symbols from the sufficient statistics and signal cross-correlations. Interest has grown in suboptimal demodulation schemes which exhibit a low order of complexity to ensure their practical implementation, but not exhibiting the impairment of the conventional single-user detector. The multistage detection strategy for coherent demodulation in asynchronous code-division multiple-access systems is such a suboptimal detection scheme based on successive estimation and removal of the multiple-access interference, and requires a computational complexity per symbol which is linear in the number of users, in contrast to the exponential complexity of the optimum demodulator. This project presents simulation results for the performance of a multistage detector for varying number of interfering users, and different combinations of desired user versus interfering users' signal energies. It is shown that the performance approaches that of communIcations as the interfering signals become stronger. The near-far problem is therefore alleviated. Results also indicate that one stage in the receiver is required to reject interference from users at each of the various power levels. This receiver could be modified for use in practical CDMA systems by designing a multistage receiver which forms successive estimates of the channel state in addition to the interference. / Master of Science

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