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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.

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Showing 81 to 90 of 6128 (0.062 seconds)
81

A Study on Timing Acquisition and Channel Estimation in Ultra-Wide Band Systems

Huang, Chu-chi 15 September 2008 (has links)
The direct sequence ultra-wideband (DS-UWB) system has the characteristics of low transmission power constraints and wide transmitted bandwidth. The wide bandwidth will introduce fine timing resolution and severe inter-symbol interference (ISI), which will is cause larger delay spread. Therefore, the traditional acquisition methods are no longer suitable here. A modified acquisition method and a coarse channel estimation algorithm are proposed in this thesis. Three different strategies with composition of acquisition and channel estimation are compared. Based on three strategies, the tasks of coarse acquisition and channel estimation can be achieved with limited length of acquisition sequence. From simulation results, the parallel strategy is robust enough to operate under the UWB channel in severe ISI conditions and the time duration for completing the tasks of coarse acquisition and channel estimation meets the specification of IEEE 802.15.3a.
UWB
acquisition
channel estimation
82

Dissertatio Inauguralis De Prohibitione Alienationis Conventionali, Occasione l. 3. C. de condict. ob caus. dat. /

Müller, Peter. Friese, Joh. Bernh. Thrum, Joachim Heinrich. Unknown Date (has links)
Schlüsselseiten aus dem Exemplar der BSB München: 4 Diss. 218. / Signaturformel: A - C4, D2.
83

Automatic target recognition using location uncertainty /

Liu, Gang, January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 218-236).
Computer vision. Target acquisition.
84

Memory of socially-obtained information in second language acquisition /

Adachi, Takanori, January 2000 (has links)
Thesis (Ph. D.)--University of Oregon, 2000. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 96-102). Also available for download via the World Wide Web; free to University of Oregon users.
Second language acquisition Memory
85

Army aviation addressing battlefield anomalies in real time with the teaming and collaboration of manned and unmanned aircraft

McGrew, Timothy M. January 2009 (has links) (PDF)
Thesis (M.S. in Defense Analysis)--Naval Postgraduate School, December 2009. / Thesis Advisor: Bordetsky, Alex. Second Reader: Greenshields, Brian. "December 2009." Description based on title screen as viewed on January 27, 2010. Author(s) subject terms: Teaming and collaboration of manned and unmanned aircraft. Includes bibliographical references (p. 59-61). Also available in print.
Game theory. Target acquisition.
86

The effects of second language experience on typologically similar and dissimilar third languages /

Gibbons, Erin Elizabeth, January 2009 (has links) (PDF)
Thesis (M.A.)--Brigham Young University. Dept. of Language Studies, 2009. / Includes bibliographical references (p. 59-61).
87

The phonetic basis of early speech acquisition in Korean

Lee, Soyoung. January 2003 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2003. / Vita. Includes bibliographical references. Available also from UMI Company.
Language acquisition. Korean language
88

Effects-based targeting another empty promise? /

Beagle, T. W. January 1900 (has links)
Thesis--School of Advanced Airpower Studies, Maxwell Air Force Base, Ala., 1999-2000. / Title from title screen (viewed Oct. 9, 2003). "December 2001." Includes bibliographical references.
Air power Target acquisition
89

The impact of perceptual dissimilarity on the perception of foreign accented speech

Weil, Shawn Aaron, Unknown Date (has links)
Thesis (Ph. D.)--Ohio State University, 2003. / Title from first page of PDF file. Document formatted into pages; contains xiii, 103p.; also includes graphics. Includes abstract and vita. Advisor: Mark A. Pitt, Dept. of Psychology. Includes bibliographical references (p. 99-103).
90

Trying the tongue : a psychoanalytic reading of silence in second language learning /

Granger, Colette A. January 2000 (has links)
Thesis (M.Ed.)--York University, 2000. Graduate Programme in Education. / Typescript. Includes bibliographical references (leaves 151-161). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ59172

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