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Description
The book presents the development of UWB Impulse
Radio (IR) direction finding (DF) system using a
reduced complexity receiver structure. Firstly, it
discusses the DF receiver design using digital
channelization 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, a simple analog level
threshold detector (LTD) is introduced. 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). This book also discusses
a time-delay-based DF system which estimates the
time delay at each channel of the array. Lastly, the
discussion extends the DF problem from single source
to multiple sources transmission, using Time Hopping
Multiple Access scheme. This book provides an
extensive overview of the solutions available for
UWB-IR DF systems and the challenges lie ahead for
improving the solutions. Joni Polili LIE, PhD, is Research Scientist with Sensor Array
Research Program, Temasek Laboratories@Nanyang Technological
University, Singapore. He has published several refereed
technical conference contributions and journal papers, many of
which are on topics related to ultra wideband impulse radio
array.
