Experimental Demonstration of Lloyd–Max Algorithm to Quantization Noise Reduction on a Power-Domain Non-Orthogonal Multiple Access based Coherent PON

This paper proposes the application of nonlinear quantization to a power-domain nonorthogonal multiple access (PD-NOMA-) passive optical network (PON) scheme. Experimental demonstration results indicate a gain of up to approximately 5 dB at a power ratio of 10 between two optical network units.