Performance Comparison of PS Star-16QAM and PS Square-Shaped 16QAM (Square-16QAM)

Performance Comparison of PS Star-16QAM and PS Square-Shaped 16QAM (Square-16QAM)

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 ac...

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Veröffentlicht in:IEEE photonics journal 2017-12, Vol.9 (6), p.1-8
Hauptverfasser: Liu, Bo, Zhang, Ying, Wang, Kaihui, Kong, Miao, Zhang, Lijia, Zhang, Qi, Tian, Qinghua, Xin, Xiangjun
Format: Artikel
Sprache:eng
Schlagworte:
homodyne coherent detection
Optical amplifiers
Optical attenuators
Optical fibers
Optical filters
Optical polarization
Optical receivers
Probabilistic shaping (PS)
square-16QAM
star-16QAM
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Zusammenfassung: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.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2017.2760347