• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 602
  • 80
  • 60
  • 25
  • 24
  • 13
  • 10
  • 10
  • 9
  • 9
  • 7
  • 7
  • 7
  • 7
  • 7
  • Tagged with
  • 1032
  • 1032
  • 312
  • 276
  • 179
  • 155
  • 150
  • 142
  • 124
  • 120
  • 105
  • 102
  • 101
  • 101
  • 86
  • 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.
521

Characterisation of the radio noise environment in New Zealand

Banks, Paul Russell January 2009 (has links)
A methodology for the measurement of the radio frequency environment close to the radio noise floor is presented for urban, suburban and rural areas within New Zealand for the purposes of characterisation and trend monitoring by radio spectrum managers. Flux density measurements in bands within a range of frequencies from 80 MHz to 8 GHz have been made in urban, suburban and rural areas of New Zealand during 2007 and 2008. An analysis of the band occupancy is presented in summary form. These summaries are intended as a starting point for radio spectrum usage and can be used as a reference for any future measurements. A description of the computer directories and charts resulting from these measurements, using 20 MHz bandwidths have also been included. All the results for the work have been collated in a set of computer directories named “NZRFI Directories 2007 2008”, which are intended as a reference for use in the determination of local activity in particular frequency ranges. A disc with the full range measurement spectral density charts and channel occupancy charts accompanies this work. Also included on the disc are sets of 20 MHz band charts for some urban, suburban and rural location measurements.
522

On the design of HF radio modems / Timothy C. Giles.

Giles, Timothy C. January 1995 (has links)
Copies of author's previously published articles inserted. / Bibliography: leaves 118-126. / 160 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The subject of this thesis is the improvement of the design of High fidelity (HF) Radio modems by interpreting the high fidelity radio channel from a signal design perspective. / Thesis (Ph.D.)--University of Adelaide, Dept. of Electrical and Electronic Engineering, 1996?
523

Characterisation of the radio noise environment in New Zealand

Banks, Paul Russell January 2009 (has links)
A methodology for the measurement of the radio frequency environment close to the radio noise floor is presented for urban, suburban and rural areas within New Zealand for the purposes of characterisation and trend monitoring by radio spectrum managers. Flux density measurements in bands within a range of frequencies from 80 MHz to 8 GHz have been made in urban, suburban and rural areas of New Zealand during 2007 and 2008. An analysis of the band occupancy is presented in summary form. These summaries are intended as a starting point for radio spectrum usage and can be used as a reference for any future measurements. A description of the computer directories and charts resulting from these measurements, using 20 MHz bandwidths have also been included. All the results for the work have been collated in a set of computer directories named “NZRFI Directories 2007 2008”, which are intended as a reference for use in the determination of local activity in particular frequency ranges. A disc with the full range measurement spectral density charts and channel occupancy charts accompanies this work. Also included on the disc are sets of 20 MHz band charts for some urban, suburban and rural location measurements.
524

Bounds and algorithms for carrier frequency and phase estimation

Rice, Feng January 2002 (has links)
Quadrature amplitude modulation (QAM) is a highly bandwidth efficient transmission technique for digital communications. It makes use of multiple signal phase and amplitude levels to carry multiple bits per symbol. This requires accurate and robust carrier phase and frequency estimation in the receiver. / Thesis (PhDElectronicEngineering)--University of South Australia, 2002
525

RFID-assisted wireless sensor networks for cardiac tele-healthcare /

Celentano, Laura J. January 2007 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2007. / Typescript. Includes bibliographical references (p. 67-68).
526

Personnel tracking system using a bluetooth-based epidemic protocol

Sosa, Abimael, January 2007 (has links)
Thesis (M.S.)--University of Texas at El Paso, 2007. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.
527

Noise characterization and modeling of MOSFETs for RF IC applications /

Chen, Chih-Hung. Deen, M. Jamal. January 2002 (has links)
Thesis (Ph.D.)--McMaster University, 2002. / Adviser: Jamal Deen. Includes bibliographical references. Also available via World Wide Web.
528

Low-power CMOS radio frequency integrated circuits for frequency synthesis /

Murji, Rizwan. Deen, M. Jamal. January 2005 (has links)
Thesis (Ph.D.)--McMaster University, 2005. / Supervisor: M. Jamal Deen. Includes bibliographical references (leaves 154-164). Also available online.
529

Noise characterization and modeling of MOSFETs for RF IC applications /

Chen, Chih-Hung. Deen, M. Jamal. January 2002 (has links)
Thesis (Ph.D.)--McMaster University, 2002. / Adviser: Jamal Deen. Includes bibliographical references. Also available via World Wide Web.
530

Low-power CMOS radio frequency integrated circuits for frequency synthesis /

Murji, Rizwan. Deen, M. Jamal. January 2005 (has links)
Thesis (Ph.D.)--McMaster University, 2005. / Supervisor: M. Jamal Deen. Includes bibliographical references (leaves 154-164). Also available online.

Page generated in 0.0678 seconds