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Adaptive Techniques for Multiuser OFDM
(Published Dec 2001)
This Ph.D. thesis presents an investigation into methods
for maximising the spectral efficiency of Orthogonal
Frequency Division Multiplexing (OFDM) systems.
Ph.D. thesis (327
pages)
Ph.D. Exit Seminar
(52 slides)
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Access Point Repeaters
(Published Nov 2001)
The high multipath tolerance of OFDM can be exploited
to reduce the path loss experienced in WLAN systems.
Simple repeaters can be used to reduce shadowing with
in buildings, improving signal coverage.
Access Point Repeater
(6 pages)
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Adaptive Modulation
(Published Dec 1999)
OFDM allows different modulations to be used on each
of the carriers in the system. This allows the system
to track frequency selective fading caused by multipath
propagation.
Adaptive Modulation
paper (5 pages)
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Multiuser OFDM
(Published Aug 1999)
This paper is an introduction to the use of OFDM in
multiuser applications and some of the potential techniques
that can be used to make a multiuser OFDM system a highly
robust, high spectral efficient communication system.
Multiuser OFDM
paper (4 pages)
Multiuser
OFDM poster
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Peak Reduction of OFDM
(Published Aug 1999)
OFDM waveforms tend to have a high Peak to Average Power
Ratio (PAPR). This PAPR can be reduced by adding additional
carriers which have their phase controlled to minimise
the overall PAPR of the OFDM symbol.
OFDM Peak Reduction
paper (4 pages)
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OFDM verses CDMA
(Published Oct 1997)
This 4th year honours thesis provides a quick introduction
to OFDM and CDMA and compares the performance of the
two modulation schemes.
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