TY  - JOUR
AU  - Yan, Keqian
AU  - Peng, Kewu
AU  - Yang, Fang
AU  - Song, Jian
PY  - 2015
TI  - Non-Uniform APSK Optimization for BICM Systems
JO  - Tsinghua Science and Technology
SN  - 1007-0214
SP  - 175
EP  - 181
VL  - 20
IS  - 2
AB  - 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.
UR  - https://doi.org/10.1109/TST.2015.7085630
DO  - 10.1109/TST.2015.7085630