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Predistortion as a cost-effective means to tackling nonlinearity in radio over fibre links
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Awoye, Adeyinka A. (2012) Predistortion as a cost-effective means to tackling nonlinearity in radio over fibre links. PhD thesis, University of Warwick.
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Official URL: http://webcat.warwick.ac.uk/record=b2680617~S1
Abstract
Radio
over
fibre
technology
in
combination
with
the
enormous
bandwidth
capabilities
offered
by
an
optical
fibre
was
studied
due
to
the
advantage
of
a
centralized
signal-‐processing
architecture.
Fibre-‐based
wireless
access
schemes
employing
sub-‐carrier
multiplexing
radio
over
fibre
links
provide
the
unique
capacity
to
support
a
number
of
services
such
as
cellular
network,
common
antennae
television
and
wireless
local
area
network
applications
simultaneously.
The
theory
and
design
of
a
radio
over
fibre
link
was
studied,
with
the
objective
of
providing
an
economically
viable
high
performance
link
to
be
used
in
a
digital
cellular
system.
The
nonlinearity
in
the
link
system,
especially
in
the
optical
source,
revealed
a
limitation
in
the
dynamic
range
performance
when
transmitting
analog
and
multilevel
digital
signals
over
the
fibre-‐optic
link
channels.
A
digital
baseband
linearization
technique
using
a
radial
basis
function
neural
network
that
learns
from
the
input-‐output
data
samples
of
the
link
was
presented
for
compensating
the
nonlinearity
impairments.
The
bit
error
rate
performance
analysis
of
the
link
was
performed
using
Monte-‐Carlo
and
importance
sampling
techniques
to
reveal
the
overall
system
improvements
with
the
addition
of
the
neural
network.
The
importance
sampling
technique
realized
the
required
bit
error
rate
performance
for
a
typical
digital
optical
receiver
in
the
radio
over
fibre
link
when
transmitting
digital
signals.
A
neural-‐fuzzy
based
predistortion
controlled
technique
showed
the
ability
to
compensate
for
varying
input
signal
amplitudes
into
the
radio
over
fibre
link,
allowing
for
an
overall
robust
and
adaptable
link
system.
Item Type: | Thesis (PhD) | ||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||
Library of Congress Subject Headings (LCSH): | Amplifiers, Radio frequency, Optical fiber communication, Wireless communication systems | ||||
Official Date: | September 2012 | ||||
Dates: |
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Institution: | University of Warwick | ||||
Theses Department: | School of Engineering | ||||
Thesis Type: | PhD | ||||
Publication Status: | Unpublished | ||||
Supervisor(s)/Advisor: | Green, Roger J.; Leeson, Mark S., 1963- | ||||
Description: | Unable to attach electronic version to this record. Please follow the official URL to the catalogue entry for details on how to view the thesis. |
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Extent: | xxiv, 209 leaves : illustrations, charts. | ||||
Language: | eng |
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