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http://hdl.handle.net/11375/7914
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DC Field | Value | Language |
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dc.contributor.advisor | Taylor, D.P. | en_US |
dc.contributor.author | Lereim, Troym Anne | en_US |
dc.date.accessioned | 2014-06-18T16:40:59Z | - |
dc.date.available | 2014-06-18T16:40:59Z | - |
dc.date.created | 2009-07-10 | en_US |
dc.date.issued | 1978-06 | en_US |
dc.identifier.other | opendissertations/316 | en_US |
dc.identifier.other | 1298 | en_US |
dc.identifier.other | 894249 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/7914 | - |
dc.description.abstract | <p>The main objective of this thesis is to investigate the spectral properties of Multi-h phase coding and to consider the trade-offs between error performance and bandwidth occupancy for this modulation method.</p> <p>There are multi-h phase codes which allow for a wide range of trade-offs. For example, there is a bandwidth efficient code which occupies 23% less bandwidth than Fast Frequency Shift Keying (Fast FSK) but required 2.4 dB more power to give the same noise immunity. There is also a code that needs 40% more bandwidth than Fast FSK but yields the same transmission quality with a 3.7 dB savings is power.</p> <p>The power spectrum of a multi-h code is line-free and the tail of the spectrum rolls off as 1/f⁴ as in Fast FSK.</p> <p>Three different methods for spectral analysis are presented and compared. We have found that approaches based upon the Wiener-Khinchin Theorem are to be preferred.</p> <p>Pelchat's analysis of binary FSK with continuous phase is extended to the general multi-index case.</p> <p>A multi-h code can be modelled as Markov chain and the auto-correlation function can be calculated using the theory for such processes. We have devised a simple procedure for identifying the states of the Markov chain.</p> | en_US |
dc.subject | Electrical and Electronics | en_US |
dc.subject | Electrical and Electronics | en_US |
dc.title | Multi-h-phase coding | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Electrical Engineering | en_US |
dc.description.degree | Master of Engineering (ME) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Size | Format | |
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fulltext.pdf | 1.95 MB | Adobe PDF | View/Open |
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