Constellation shaping for rate maximization in AWGN channels with non-linear distortion

摘要: It is well known that distortion in wireless transmit signals occurs due to the non-linearity of power amplifiers. The typical cost hardware and relatively large distances between devices allowed for such be thus far widely neglected literature. However, recent paradigm shifting trends point high-density networks extreme low-cost devices. In this article we therefore target problem non-linear signals, which adequately modelled by noise with proportional energy symbols. Specifically, propose a probabilistic constellation shaping technique discrete Maxwell-Boltzmann (MB) distribution employed build optimization maximization mutual information receive efficiently achieved via golden section method. approach validated simulated comparisons against systems employing conventional constellations.