Ultra Wide Bandwidth Communications for Sensor Network Applications
Speaker: Matthew D'Souza, ITEE
When: 2003-06-19 13:00:00
Venue: 78-622
Host: Dr Adam Postula
Abstract:Ultra wide bandwidth (UWB) is a term that loosely defines any type
of system that emits or receives radiation over a large frequency
range. UWB technology has been mainly used for pulse radar
applications since the late 1970s. Only recently UWB has been
applied as a wireless communication scheme using short timed pulses,
without a carrier signal, for transmission of data. Features that
make UWB suitable for wireless communications are its inherent
binary data modulation schemes, low transmission power, resistance
to interference and less complicated hardware. One of UWB(s) most
attractive potential feature is that it can produce higher data
throughput rates at a lower transmission power when compared to its
conventional wireless (narrowband) equivalents. These features of
UWB make it suitable for use in wireless sensor
applications. Sensors are crucial components of any interactive or
reactive system. Most sensor networks need effective communication
between sensors and a controller, as well as being able to operate
at low power levels.
This thesis aims to explore and develop a new data modulation scheme
for an UWB communications system used for sensor networks. This
modulation scheme adds more flexibility for data modulation in UWB
communication systems. The modulation scheme encodes data in both
the timing and spectrum of the transmitted pulse. This has the
potential to improve data throughput rates, to lower interference
between UWB and narrowband systems and to allow UWB network systems
to coexist easily.
Biography:Matthew D'Souza graduated with a Bachelor of Engineering (Computer
Systems - Hons) degree from the University of Queensland in 2001. He
is currently undertaking a PhD program in the area of Ultra Wide
Bandwidth communications. His research interests include wireless
communications, digital systems, medical sensor applications and
embedded systems.
Type: Ph.D confirmation
Contact:Dr Adam Postula, seminar host (adam@itee.uq.edu.au)
or Guido Governatori (ITEE seminar co-ordinator)
(guido@itee.uq.edu.au)