23: SER vs. SNR for 256-QAM constellation (N = 512, K = 128, 256, 512). | Download Scientific Diagram
2048 QAM (66 Gbit/s) single-carrier coherent optical transmission over 150 km with a potential SE of 15.3 bit/s/Hz
![Constellation, (a) 64 QAM, 2 GBaud, Pout = 7 dBm, EVM =-29 dB (b) 128... | Download Scientific Diagram Constellation, (a) 64 QAM, 2 GBaud, Pout = 7 dBm, EVM =-29 dB (b) 128... | Download Scientific Diagram](https://www.researchgate.net/profile/Run-Levinger/publication/303303138/figure/fig6/AS:668876085940236@1536483894398/Constellation-a-64-QAM-2-GBaud-Pout-7-dBm-EVM-29-dB-b-128-QAM-2-GBaud-Pout_Q320.jpg)
Constellation, (a) 64 QAM, 2 GBaud, Pout = 7 dBm, EVM =-29 dB (b) 128... | Download Scientific Diagram
Single-channel 200 Gbit/s, 10 Gsymbol/s-1024 QAM injection-locked coherent transmission over 160 km with a pilot-assisted adaptive equalizer
![Modulation format identification of square and non-square M-QAM signals based on amplitude variance and OSNR - ScienceDirect Modulation format identification of square and non-square M-QAM signals based on amplitude variance and OSNR - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0030401820305010-gr2.jpg)
Modulation format identification of square and non-square M-QAM signals based on amplitude variance and OSNR - ScienceDirect
![Figure 5 from 512 QAM (54 Gbit/s) coherent optical transmission over 150 km with an optical bandwidth of 4.1 GHz | Semantic Scholar Figure 5 from 512 QAM (54 Gbit/s) coherent optical transmission over 150 km with an optical bandwidth of 4.1 GHz | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/310b9f0ef7e24fa125a9df16bb4ee5c938c2d36f/3-Figure5-1.png)