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A joint coding scheme is purposed that can achieve 48.2% enhanced convergence speed with only 16.2% more increase in hardware complexity over the conventional least mean squares algorithm for the frequency domain multiple-input multiple-output equalization in a 1000 km six-mode spatial-division multiplexed transmission system.
We proposed a multi-stage electrical-PMD-compensator for coherent systems. The method is format-independent and capable of mitigating higher-order PMD. We show negligible penalty after compensation in a 100-Gb/s system with 15 ps average DGD.
We simulated 8 400-Gbit/s PDM-QPSK over 2000-km transmission by using Map detection to reduce the channel spacing to 100-GHz. MAP detection can significantly improve the system performance to < 10−3 BER compared to non-MAP detection.
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