Demostration of 520 Gb/s/λ pre-equalized DFT-spread PDM-16QAM-OFDM signal transmission | Zendy

Fan Li | Zendy; Jianjun Yu | Zendy; Zizheng Cao | Zendy; Ming Chen | Zendy; Junwen Zhang | Zendy; Xinying Li | Zendy

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Demostration of 520 Gb/s/λ pre-equalized DFT-spread PDM-16QAM-OFDM signal transmission

Author(s) -

Fan Li,

Jianjun Yu,

Zizheng Cao,

Ming Chen,

Junwen Zhang,

Xinying Li

Publication year - 2016

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.002648

Subject(s) - orthogonal frequency division multiplexing , quadrature amplitude modulation , equalization (audio) , transmission (telecommunications) , fast fourier transform , electronic engineering , computer science , qam , signal (programming language) , multiplexing , bit error rate , channel (broadcasting) , telecommunications , optics , physics , algorithm , engineering , programming language

In this paper, we successfully transmit 8 × 520 Gb/s pre-equalized DFT-spread PDM-16QAM orthogonal frequency-division multiplexing (OFDM) signal over 840 km SMF with BER under 2.4 × 10(-2). We discuss how to obtain accurate tranceivers' response during pre-equalization for DFT-spread OFDM with coherent detection and we find conventional OFDM symbols training sequences (TSs) outperform DFT-spread OFDM symbols TSs in obtaining channel response for pre-equalization and equalization. Additionally, the optimal IFFT/FFT size is explored for the pre-equalized DFT-spread PDM-16QAM-OFDM transmission systems. It is the first time to realize 400 Gb/s/λ net rate OFDM signal transmission.

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