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Application of closed-form expressions for nonlinear transmission performance of coherent optical OFDM systems

We show the application of closed-form expressions for nonlinear transmission performance of coherent optical OFDM systems with frequency guard band. The dependences of their performances on system parameters are investigated and new findings on the influence of dispersion compensation configuration and guard band are observed. The advantage of using closed-form expressions is that the performance for various system configurations can be identified without resorting to sophisticated numerical simulations.