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Set-Partitioned QAM Fast-OFDM with Real-Valued Orthogonal Circulant Matrix Transform Pre-Coding

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We propose SP-QAM based Fast-OFDM with a novel real-valued OCT pre-coding scheme for IM/DD systems. For 19.76-Gbit/s 20-km transmission, the proposed scheme achieves 3.5-dB sensitivity improvement and higher filtering tolerance over conventional PAM Fast-OFDM.

© 2018 The Author(s)

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