Reduced complexity impulse radio ultra wide band direction finding systems

The 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...

Full description

Saved in:
Bibliographic Details
Main Author: Lie, Joni Polili
Other Authors: Ng Boon Poh
Format: Theses and Dissertations
Language:English
Published: 2008
Subjects:
Online Access:https://hdl.handle.net/10356/13180
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-13180
record_format dspace
spelling sg-ntu-dr.10356-131802023-07-04T16:57:07Z Reduced complexity impulse radio ultra wide band direction finding systems Lie, Joni Polili Ng Boon Poh School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio The 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. DOCTOR OF PHILOSOPHY (EEE) 2008-10-20T07:17:41Z 2008-10-20T07:17:41Z 2008 2008 Thesis Lie, J. P. (2008). Reduced complexity impulse radio ultra wide band direction finding systems. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/13180 10.32657/10356/13180 en 217 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
Lie, Joni Polili
Reduced complexity impulse radio ultra wide band direction finding systems
description The 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.
author2 Ng Boon Poh
author_facet Ng Boon Poh
Lie, Joni Polili
format Theses and Dissertations
author Lie, Joni Polili
author_sort Lie, Joni Polili
title Reduced complexity impulse radio ultra wide band direction finding systems
title_short Reduced complexity impulse radio ultra wide band direction finding systems
title_full Reduced complexity impulse radio ultra wide band direction finding systems
title_fullStr Reduced complexity impulse radio ultra wide band direction finding systems
title_full_unstemmed Reduced complexity impulse radio ultra wide band direction finding systems
title_sort reduced complexity impulse radio ultra wide band direction finding systems
publishDate 2008
url https://hdl.handle.net/10356/13180
_version_ 1772827145052094464