High Performance PCC-DMT System Based on Hybrid Multi-Wavelet Functions

Abstract

In this paper a scheme is proposed to improve the Bit Error Rate (BER) performance
for Discrete Multi-Tone (DMT) system in wireless channel. The conventional DMT system is
based on Fast Fourier Transform (FFT). The proposed system is based on Hybrid MultiWavelet
Transform
(HMWT).
The
HMWT
is
mixed
between
FFT
and
Multi-Wavelet Transform
(MWT).
The
Inter-Carrier
Interference
(ICI)
in
DMT
system
due
to
Doppler spread
is
reduced
by
using
Polynomial
Cancellation
Coding
(PCC).
Simulation
results
are done
in
three
different
types
of
channels:
Additive
White
Gaussian
Noise
(AWGN)
channel, flat
fading
channel
and
selective
fading
channel.
The
results
show
that
the
PCC-DMT
system based
on
HMWT
achieves
better
performance
than
the
PCC-DMT
system
based
on
FFT
and the
PCC-DMT
system
based
on
MWT
in
all
channels
types.