Open AccessPerformance Comparison of PS Star-16QAM and PS Square-Shaped 16QAM (Square-16QAM)
Author(s) -
Bo Liu,
Ying Zhang,
Kaihui Wang,
Miao Kong,
Lijia Zhang,
Qi Zhang,
Qinghua Tian,
Xiangjun Xin
Publication year - 2017
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2017.2760347
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
We investigate and compare the performance of star-shaped 16-ary quadrature amplitude modulation (Star-16QAM) and square-shaped 16QAM (Square-16QAM) in the probabilistic shaping (PS) and uniform schemes with coherent detection. With the help of PS technology, the bit error ratio (BER) improvement achieved in the PS-Star-16QAM scheme is greater than that of the PS-Square-16QAM when compared with the uniform schemes in our numerical simulation and experiment. Therefore, the PS-Star-16QAM shows superiority over the PS-Square-16QAM in terms of the BER improvement.