  In this work we expand the possibilities of a known class of chaos-based
coded modulation (CCM) systems to address the problem of high-power amplifier
(HPA) nonlinearity. The hypothesis is that the CCM nonlinear nature can be
exploited to counteract its effects on the system performance, avoiding the
need of a predistorter. We propose an optimization method for the design of the
CCM to prove this hypothesis. The results show that, for a given back-off
level, a nonlinear mapping function for the chaos-based encoder and decoder can
be designed to compensate the HPA effect on the error rate.
