A New 5 bit/2D-symbol Modulation Format for Relative Intensity Noise-dominated IM-DD Systems
arXiv:2506.01761
Abstract
We propose a novel 5-bit/2D-symbol modulation format based on PAM-6 optimized for IM-DD systems dominated by relative intensity noise. The proposed modulation scheme improves SNR by 0.94 dB compared to conventional PAM-6 and achieves near-optimal BER performance.
Submitted to ECOC 2025