Existing nonlinear interference (NLI) model underestimates the NLI of dual polarization four-dimensional (4D) modulation in long-haul transmission, due to the ignorance of nonlinearity caused by signal-ASE interaction. We propose an enhanced 4D model by lifting an underlying assumption, which could improve the performance prediction accuracy.
翻译:现有的非线性干扰模式低估了长期输电的双极四维(4D)调节的NLI,因为信号-ASE互动导致对非线性不知情的无知。 我们提出一个强化的4D模型,取消一个基本假设,这可以提高性能预测的准确性。