Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/13180
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dc.contributor.authorLie, Joni Polilien
dc.date.accessioned2008-10-20T07:17:41Zen
dc.date.available2008-10-20T07:17:41Zen
dc.date.copyright2008en
dc.date.issued2008en
dc.identifier.citationLie, J. P. (2008). Reduced complexity impulse radio ultra wide band direction finding systems. Doctoral thesis, Nanyang Technological University, Singapore.en
dc.identifier.urihttps://hdl.handle.net/10356/13180en
dc.description.abstractThe research works presented in this thesis are motivated by the low complexity and high accuracy capabilities of UWB Impulse Radio (IR) systems. In particular, this thesis addresses UWB IR direction finding (DF) system designs using a reduced complexity receiver structure. The first contribution of the thesis is the DF receiver using digital channelization receiver architecture, where the use of Nyquist rate sampling is no longer required. In a multipath environment, this approach requires a multipath suppression technique. Due to the low complexity constraint, we propose a simple analog level threshold detector (LTD). Performance analysis reveals that the error in detection due to the LTD will give rise to the estimation errors. An alternative means for DF is using a simple analog differentiator with a peak-and-hold detector. This approach is motivated by the observation of a staircase-shape waveform whose slope indicates the direction of arrival (DOA). In view of the error from the LTD’s operation, we propose a time-delay-based DF system. The DF is calculated from the time delay estimates from each channel of the array. Lastly, we extend the DF problem from single source to multiple sources transmission, using Time Hopping Multiple Access scheme.en
dc.format.extent217 p.en
dc.language.isoenen
dc.subjectDRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radioen
dc.titleReduced complexity impulse radio ultra wide band direction finding systemsen
dc.typeThesisen
dc.contributor.supervisorNg Boon Pohen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen
dc.description.degreeDOCTOR OF PHILOSOPHY (EEE)en
dc.identifier.doi10.32657/10356/13180en
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Appears in Collections:EEE Theses
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