2D geometrically shaped constellations that are simultaneously robust to both residual phase noise (RPN) and AWGN (named as xx(x)M-RPN, where xx(x) is the receiver type) for 8 to 256-ary PCAWGN reception. The presented formats are optimised at the indicative bit-wise achievable information rate (AIR)  threshold of 0.9m bit/symbol, where m is the number of bits per constellation point. Additionally, we added AWGN-only constellations (xx(x)M-AWGN) to serve as a reference.

Instructions: 

Each modulation order is placed in a separate folder, in which, every text file has the coordinates for the in-phase and quadrature components of each symbol in the first and the second column, respectively. The bit mapping for each symbol is natural mapping for the line number, i.e., 000 001 010 011 100 etc.

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2D geometrically shaped constellations that are simultaneously robust to both residual phase noise and AWGN (GS-RPN) for 8, 16, 32 and 64-ary formats. The presented formats are optimised at the generalised mutual information (GMI) threshold of 0.96m bits/symbol, where m is the number of bits per symbol. Additionally, we added AWGN-only constellations (GS-AWGN) to serve as a reference.

 

Note: This is a supplementary dataset for a journal submission.

Instructions: 

Each modulation order is placed in a separate folder, in which, every text file has the coordinates for the in-phase and quadrature components of each symbol in the first and the second column, respectively. The bit mapping for each symbol is natural mapping for the line number, i.e., 000 001 010 011 100 etc.

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This dataset contains the full set of experimental waveforms that were used to produce the article "Non-Linear Phase Noise Mitigation over Systems using Constellation Shaping", published in the Journal of Lightwave Technology with DOI: 10.1109/JLT.2019.2917308.

 

Instructions: 

The dataset contains two files: PartIII_NZDSF.tar and PartIV_GS.tar, corresponding to part III and part IV of the paper. Each file contains: * Transmitted one-sample-per-symbol sequence, that is loaded into the DAC. * Intradyne back-to-back results. * Propagation results over the recirculating loop. All data has been captured with a 50 GS/s Tektronix oscilloscope, and symbol rate is 16 GBaud. Back-to back results are quoted as a function of noise power, i.e. attenuation of the ASE source used for noise loading. Loop results are quoted as a function of the per-channel optical power and recirculation number. Details on the experiment are available on the paper.

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