Investigation into variable shift keying using direct sequence spread spectrum techniques
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.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.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.citation | Whaits, C. 1997. Investigation into variable shift keying using direct sequence spread spectrum techniques. University of Cape Town. | 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 |
dc.identifier.uri | http://hdl.handle.net/11427/9565 | |
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.language.iso | eng | en_ZA |
dc.publisher.department | Department of Electrical Engineering | en_ZA |
dc.publisher.faculty | Faculty of Engineering and the Built Environment | |
dc.publisher.institution | University of Cape Town | |
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 | |
dc.type.qualificationlevel | Masters | |
dc.type.qualificationname | MSc | en_ZA |
uct.type.filetype | Text | |
uct.type.filetype | Image | |
uct.type.publication | Research | en_ZA |
uct.type.resource | Thesis | en_ZA |
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