ESN-Driven joint decision strategy for a configurable security NOMA optical communication system

This paper presents an Echo State Network (ESN)-Driven joint decision strategy for a configurable security Non-Orthogonal Multiple Access (NOMA) optical communication system. To address security vulnerabilities, a configurable key iteration scheme is introduced, achieving temporal interleaving of chaotic models and keys. Furthermore, an ESN-Driven joint demodulation strategy is designed, which replaces conventional log-likelihood ratio (LLR) computations with ESN, leading to a reduction in computational overhead. Experimental validation over a 7-core fiber demonstrates that the ESN-Driven joint decision strategy maintains low computational cost while increasing Brute-Force Time (BFT) to 10¹⁵¹, thereby significantly enhancing efficiency and security of the system.