Optimized Decision Method Based on K-means- TKNN for Coherent Optical Communication Systems

We proposed a nonlinear equalization method based on K-means-Tailored K-Nearest Neighbors (K-means-TKNN) algorithm. The simulation results show that the computational complexity of K-means-TKNN can be reduced to 20.3 % of that of the traditional KNN algorithm for the 64-QAM system.