140-Gb/s PS-256-QAM Transmission in an OFDM System Using Kramers–Kronig Detection
140-Gb/s PS-256-QAM Transmission in an OFDM System Using Kramers–Kronig Detection
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DOI：
10.1109/lpt.2019.2929524
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发表时间：
2019-09
影响因子：
2.6
通讯作者：
Kaihui Wang;Yiran Wei;Mingming Zhao;Wen Zhou;Jianjun Yu
中科院分区：
文献类型：
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作者：
Kaihui Wang;Yiran Wei;Mingming Zhao;Wen Zhou;Jianjun Yu
We experimentally demonstrate an orthogonal frequency-division multiplexing (OFDM) system with direct detection. Adopting Kramers–Kronig (KK) detection and probabilistic shaping (PS) technology, 140-Gb/s 256-QAM signal can be successfully transmitted over 25-km standard single-mode fiber (SSMF), which satisfies the normalized generalized mutual information (NGMI) threshold of 0.865. Based on the experimental results, the performance of single-side band (SSB) OFDM signal can be effectively improved with the aid of KK detection and can be further enhanced by the deployed PS method.
