Investigation into variable shift keying using direct sequence spread spectrum techniques

 

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dc.contributor.advisor Braun, Robin en_ZA
dc.contributor.author Whaits, Clive Vivian en_ZA
dc.date.accessioned 2014-11-11T20:07:35Z
dc.date.available 2014-11-11T20:07:35Z
dc.date.issued 1997 en_ZA
dc.identifier.citation Whaits, C. 1997. Investigation into variable shift keying using direct sequence spread spectrum techniques. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/9565
dc.description Includes bibliographical references. en_ZA
dc.description.abstract This thesis reports the research done into a relatively unknown modulation scheme called VPSK (Variable Phase Shift Keying) and the use of DSSS (Direct Sequence Spread Spectrum) techniques to achieve carrier synchronization and hence coherent demodulation in the receiver. VPSK is a new and relatively unknown modulation scheme in which data bits are encoded using patented algorithms designed by Millerand Walker. VPSK modulation is a SSBSC (Single Sideband Suppressed Carrier) modulation scheme with good bandwidth efficiency. Data is coherently demodulated in the receiver. In existing VPSK systems, the locally generated carrier in the receiver is synchronized to an integer multiple of the symbol clock frequency to allow coherent demodulation. This coherent method of demodulation is not optimum if the channel over which information must be transmitted is a non-Gaussian channel, or has multi-path characteristics. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Applied Science en_ZA
dc.title Investigation into variable shift keying using direct sequence spread spectrum techniques en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Electrical Engineering en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Whaits, C. V. (1997). <i>Investigation into variable shift keying using direct sequence spread spectrum techniques</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/9565 en_ZA
dc.identifier.chicagocitation Whaits, Clive Vivian. <i>"Investigation into variable shift keying using direct sequence spread spectrum techniques."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1997. http://hdl.handle.net/11427/9565 en_ZA
dc.identifier.vancouvercitation Whaits CV. Investigation into variable shift keying using direct sequence spread spectrum techniques. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9565 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Whaits, Clive Vivian AB - This thesis reports the research done into a relatively unknown modulation scheme called VPSK (Variable Phase Shift Keying) and the use of DSSS (Direct Sequence Spread Spectrum) techniques to achieve carrier synchronization and hence coherent demodulation in the receiver. VPSK is a new and relatively unknown modulation scheme in which data bits are encoded using patented algorithms designed by Millerand Walker. VPSK modulation is a SSBSC (Single Sideband Suppressed Carrier) modulation scheme with good bandwidth efficiency. Data is coherently demodulated in the receiver. In existing VPSK systems, the locally generated carrier in the receiver is synchronized to an integer multiple of the symbol clock frequency to allow coherent demodulation. This coherent method of demodulation is not optimum if the channel over which information must be transmitted is a non-Gaussian channel, or has multi-path characteristics. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Investigation into variable shift keying using direct sequence spread spectrum techniques TI - Investigation into variable shift keying using direct sequence spread spectrum techniques UR - http://hdl.handle.net/11427/9565 ER - en_ZA


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