• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 68
  • 13
  • 5
  • 5
  • 3
  • 2
  • 1
  • 1
  • Tagged with
  • 137
  • 137
  • 28
  • 26
  • 21
  • 19
  • 19
  • 18
  • 18
  • 17
  • 17
  • 15
  • 14
  • 14
  • 14
  • 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.
21

CDMA SATELLITE MOBILE COMMUNICATION SYSTEM MULTI-SIGNAL RECEIVING AND SOFTWARE IMPLEMENTATION

Hao, Wu, Zhibin, Zheng 10 1900 (has links)
International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / This paper presents one new type CDMA multi-signal receiving protocol, which is suitable for satellite mobile communication systems. Then it gives the principle analysis and describes the realization of this protocol. Meanwhile, it gives the software protocol implementation scheme. From the long point of view, it will more increase the system flexibility, which is easier to update; and will solve the interoperability and integration application problems. Finally, the simulation results conclude that software implementation of CDMA multi-signal receiving in satellite mobile communication system is feasible, and it may be used in other wireless communication systems.
22

A field programmable gate array based software defined radio design for the space environment

Livingston, Jeremy V. January 2009 (has links) (PDF)
Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, December 2009. / Thesis Advisor(s): Kragh, Frank E.; Loomis, Herschel. "December 2009." Description based on title screen as viewed on January 27, 2010. Author(s) subject terms: data compression, signal analysis, Software Defined Radio (SDR), system generator, Fast Fourier Transform (FFT), Field Programmable Gate Array (FPGA), Xilinx, Virtex (TM), error detection, parity, space-based computing. Includes bibliographical references (p. 101-102). Also available in print.
23

Adaptive modulation for cognitive radios

Sharma, Gaurav, January 2008 (has links) (PDF)
Thesis (M.S.)--Missouri University of Science and Technology, 2008. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed February 13, 2008) Degree granted by Missouri University of Science and Technology, formerly known as University of Missouri--Rolla. Includes bibliographical references (p. 44-45).
24

Weak signal reception using software defined radios and a two-element antenna array

Rundquist, Victor Frederic, January 2006 (has links) (PDF)
Thesis(M.S.)--Auburn University, 2006. / Abstract. Vita. Includes bibliographic references.
25

Multi-channel hardware/software codesign on a software radio platform

Bales, Jason M. January 2008 (has links)
Thesis (M.S.)--George Mason University, 2008. / Vita: p. 89. Thesis director: David D. Hwang. Submitted in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering. Title from PDF t.p. (viewed Mar. 9, 2009). Includes bibliographical references (p. 85-88). Also issued in print.
26

Implementation of DQPSK and OWM-QAM as software defined radio system /

Li, Qi, January 2008 (has links)
Thesis (M.S.)--University of Texas at Dallas, 2008. / Includes vita. Includes bibliographical references (leaves 82-84)
27

A MATLAB-based FM demodulator for the radio broadcast data system /

Shende, Sandeep Subhash. January 2010 (has links)
Thesis (M.S.)--Boise State University, 2010. / Includes abstract. Includes bibliographical references (leaves 73-75).
28

A MATLAB-based FM demodulator for the radio broadcast data system

Shende, Sandeep Subhash. January 2010 (has links)
Thesis (M.S.)--Boise State University, 2010. / Title from t.p. of PDF file (viewed July 20, 2010). Includes abstract. Includes bibliographical references (leaves 73-75).
29

GNU Radio testbed

Manicka, Naveen. January 2007 (has links)
Thesis (M.S.)--University of Delaware, 2007. / Principal faculty advisor: Chien-Chung Shen, Dept. of Computer & Information Sciences. Includes bibliographical references.
30

Design of Software Defined Radio for SuperDARN Radar

Kennedy, Paul January 2019 (has links)
Software defined radio (SDR) is a rapidly developing field enabled by continuing improvements in digital electronics. Software defined radio has been used extensively in communication systems due to its flexibility and cost effectiveness. Recently, SDR has been incorporated into radar systems, particularly for ionospheric research. This study investigated the benefits and design of a high frequency (HF) SDR receiver for the next generation of Super Dual Auroral Network (SuperDARN) radars. This work analyzed digital beamforming and waveform design approaches that would be enabled by the adoption of a SDR based radar design and found that these techniques could improve the performance of SuperDARN radars. This work also developed a prototype receiver to demonstrate the feasibility of a SDR based SuperDARN radar. The hardware selection for this receiver leveraged low-cost commercial off-the-shelf software defined radios and amplifier designs supplemented by custom filters. The software implementation utilized GNU Radio, an open source SDR and signal processing platform, to process and record receiver data. A prototype was successfully designed and constructed using the Red Pitaya software defined radio. This prototype included a 4 channel receiver which was evaluated in the laboratory setting and tested at the Blackstone, Virginia radar site. A comparison of results from the prototype receiver and the existing hardware showed promise for the use of this platform in future ionospheric research. / M.S. / Software defined radio (SDR) is a rapidly developing field which uses software to perform radio signal processing traditionally accomplished by hardware components. Software defined radio has been used extensively in communication systems due to its flexibility and cost effectiveness. Recently, SDR has been incorporated into radar systems, particularly for space science research. This study investigated the benefits and design of a SDR receiver for the next generation of Super Dual Auroral Network (SuperDARN) radars. This work analyzed radar design approaches that would be enabled by the adoption of a SDR framework and found techniques that could improve the performance of SuperDARN radars. This work also developed a prototype receiver using low-cost commercial off-the-shelf software defined radios to demonstrate the feasibility of a SDR based SuperDARN radar. A prototype was successfully designed and constructed using the Red Pitaya software defined radio. This prototype was evaluated in the laboratory setting and tested at the Blackstone, Virginia radar site. A comparison of results from the prototype receiver and the existing hardware showed promise for the use of this platform in future space science research.

Page generated in 0.0553 seconds