AI Article Synopsis
- This paper introduces a new modulation technique called power domain superposition modulation, utilizing both dimensional level transformation and 5D constellation shaping.
- It enhances data transmission by geometrically shaping a 5D constellation using a stacked triangular pyramid structure.
- Experimental results show that this new method outperforms traditional 2D-32QAM by achieving a 0.7 dB gain at high optical power and a 0.4 dB sensitivity gain at a specific bit error rate.
Article Abstract
This paper proposes a power domain superposition modulation method based on dimensional level transformation and five dimensions (5D) constellation shaping. Stacking a regular triangular pyramid and enhancing it in terms of dimensions achieves the geometric shaping of the 5D constellation. Based on this, signal superposition in the power domain is achieved through dimensional transformation for data modulation. Experimental verification was conducted on a 2 km seven-core fiber in an IM/DD system. Compared to the traditional 2D-32QAM, this method can achieve a 0.7 dB gain at high received optical power and a 0.4 dB receiver sensitivity gain at a BER of 3.8 × 10.
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| http://dx.doi.org/10.1364/OL.540774 | DOI Listing |
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