Permutation Coding with Injections for Modified PAM System
Abstract
Arriving at a good combination of coding and
modulation schemes that can achieve good error correction
constitutes a challenge in digital communication systems. In this
work, we explore the combination of permutation coding (PC)
and pulse amplitude modulation (PAM) for mitigating channel
errors in the presence of background noise and jitter. Since PAM
is characterised with bi-polar constellations, Euclidean distance is
a good choice for predicting the performance of such coded modulation
setup. In order to address certain challenges facing PCs,
we therefore introduce injections in the coding system, together
with a modified form of PAM system. This modification entails
constraining the PAM constellations to the size of the codeword’s
symbol. The results obtained demonstrate the strength of the
modified coded PAM system over the conventional PC coded
PAM system.
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