Open AccessBit Error Floor Reduction for MQAM Signals in the Presence of Phase Error
Author(s) -
Yeonsoo Jang,
Janghoon Oh,
Hyeongyong Lim
Publication year - 2022
Publication title -
ieee access
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 127
ISSN - 2169-3536
DOI - 10.1109/access.2022.3232078
Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation
We propose a method to form a non-uniform decision boundary (NUDB) for M -ary quadrature amplitude modulation (MQAM) signals to reduce bit error floor (BEF) in the presence of phase error. We put our focus on angle distances between MQAM symbols and adjacent decision boundaries to observe minimum angle distance, and derive optimum intervals for the decision boundaries to maximize the minimum angle distance. Through computer simulations, we verify that the proposed NUDB shows lower BEF than a conventional uniform decision boundary by 56% and 15% smaller for 16QAM and 64QAM, respectively.