在 50 千米色散未补偿链路上对 C 波段 IM/DD 多载波信号进行 CD 感知非正交 DFT 精确编码。

IF 3.2 2区物理与天体物理 Q2 OPTICS

Optics express Pub Date : 2024-07-15 DOI:10.1364/OE.523497

Junwei Zhang, Liwang Lu, Heyun Tan, Alan Pak Tao Lau, Chao Lu

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引用次数: 0

摘要

本文提出了一种色度色散感知非正交离散傅里叶变换预编码（CDA-NODFTP）方案，用于受 CD 约束的强度调制和直接检测（IM/DD）多载波信号传输系统。利用 90-Gb/s 正交频分复用（OFDM）和滤波器组多载波（FBMC）信号，在 50 公里长的 C 波段色散未补偿链路上对所提出的 CDA-NODFTP 方案的性能进行了实验评估，并与传统的 DFTP 和 NODFTP 方案进行了比较。实验结果表明，就误码率（BER）性能而言，采用自适应频谱压缩技术的 CDA-NODFTP 优于传统的 DFTP、NODFTP 和非编码方案。此外，仅从 CD 响应来看，CDA-NODFTP-FBMC 的性能优于 CDA-NODFTP-OFDM 和自适应比特和功率加载 (ABPL) FBMC，在误码率为 3.8 × 10-3 时，接收器灵敏度提高了 2 dB 以上。

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CD-aware non-orthogonal DFT-precoding for C-band IM/DD multicarrier signals over a 50-km dispersion-uncompensated link.

In this paper, a chromatic-dispersion-aware non-orthogonal discrete Fourier transform precoding (CDA-NODFTP) scheme is proposed for CD-constrained intensity-modulation and direct detection (IM/DD) multicarrier-signal transmission systems. The performance of the proposed CDA-NODFTP scheme is experimentally evaluated and compared with conventional DFTP and NODFTP schemes over a 50-km C-band dispersion-uncompensated link, utilizing 90-Gb/s orthogonal frequency division multiplexing (OFDM) and filter bank multicarrier (FBMC) signals. Experimental results show that the proposed CDA-NODFTP with adaptive spectral compression outperforms conventional DFTP, NODFTP, and the non-precoding schemes in terms of bit error rate (BER) performance. Moreover, based on CD response only, the CDA-NODFTP-FBMC exhibits superior performance compared to both CDA-NODFTP-OFDM and adaptive bit and power loading (ABPL) FBMC, achieving receiver sensitivity improvements of over 2 dB at a BER of 3.8 × 10^-3.

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来源期刊

Optics express 物理-光学

CiteScore

6.60

自引率

15.80%

发文量

5182

审稿时长

2.1 months

期刊介绍： Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.