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    Generation and FEC-Decoding of a 230-Gb/s PDM-OFDM Signal With 256-Iterative-Polar-Modulation Achieving 11.08-b/s/Hz Intrachannel Spectral Efficiency and 800-km Reach

Generation and FEC-Decoding of a 230-Gb/s PDM-OFDM Signal with 256-Iterative-Polar-Modulation Achieving 11.08-b/s/Hz Intrachannel Spectral Efficiency and 800-km Reach

04 March 2012

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A 230-Gb/s PDM-OFDM signal with 256-iterative-polar-modulation, outperforming 256-QAM by 1.2 dB in required OSNR after soft-FEC decoding, is generated, FEC-decoded, and transmitted over a record distance of 800 km with 11.08-b/s/Hz intrachannel spectral efficiency. OCIS: (060.1660) Coherent communications; (060.5060) Phase modulation; (060.2330) Fiber optics communications.

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