Title of article :
Non-Uniform APSK Optimization for BICM Systems
Author/Authors :
Yan, Keqian Tsinghua National Laboratory for Information Science and Technology (TNList) - Department of Electronic Engineering - Tsinghua University , Peng, Kewu Tsinghua National Laboratory for Information Science and Technology (TNList) - Department of Electronic Engineering - Tsinghua University , Yang, Fang Tsinghua National Laboratory for Information Science and Technology (TNList) - Department of Electronic Engineering - Tsinghua University , Song, Jian Tsinghua National Laboratory for Information Science and Technology (TNList) - Department of Electronic Engineering - Tsinghua University
Abstract :
Traditional Amplitude Phase Shift Keying (APSK) consists of rings with points uniformly spaced. By giving up this uniform-spacing feature, we propose an APSK optimization method based on the uniform APSK with
Gray labeling (Gray-APSK). The aim of the optimization is to maximize
the Generalized Mutual Information (GMI) of Bit-Interleaved Coded Modulation (BICM) for the targeted code rate and channel. We show that our optimized non-uniform APSK could offer further performance
gain compared with the conventional uniform Gray-APSK and considerably outperforms the traditional quadrature amplitude
modulation at the targeted SNR and channel.
Keywords :
geometrical shaping , non-uniform Amplitude Phase Shift Keying (APSK) , Bit-Interleaved Coded Modulation (BICM) , mutual information
Journal title :
Astroparticle Physics
