A Novel Modulation Scheme Based on the Kramers--Kronig Relations for Optical IM/DD Systems

Fuente: arXiv
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Autori principali: Dong, Xiaohe, Zhang, Kuokuo, Zhang, Jiarui, Yang, Baoyin, Sun, Caiming
Natura: Preprint
Pubblicazione: 2025
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author Dong, Xiaohe
Zhang, Kuokuo
Zhang, Jiarui
Yang, Baoyin
Sun, Caiming
author_facet Dong, Xiaohe
Zhang, Kuokuo
Zhang, Jiarui
Yang, Baoyin
Sun, Caiming
contents The ever-growing demand for higher data rates in optical communication systems necessitates the development of advanced modulation formats capable of significantly enhancing system performance. In this work, we propose a novel modulation format derived from the Kramers--Kronig relations. This scheme effectively reduces the complexity of digital filtering and alleviates the demands on the digital-to-analog converter, offering a practical solution for high speed optical communication. The proposed modulation format was rigorously validated through experimental investigations using an optical wireless link. The results demonstrate a notable improvement in bit error rate (BER) performance and receiver sensitivity compared to PAM-4 and CAP-16 modulation schemes, with enhancements of 0.6 dB and 1.5 dB in receiver sensitivity, respectively. These improvements enable higher data transmission rates, positioning the Kramers--Kronig relations-based modulation format as a promising alternative to existing modulation techniques. Its potential to enhance the efficiency and capacity of optical communication systems is clearly evident. Future work will focus on extending its application to more complex scenarios, such as high-speed underwater optical communication systems, where advanced modulation formats are critical for overcoming bandwidth limitations.
format Preprint
id arxiv_https___arxiv_org_abs_2501_09992
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A Novel Modulation Scheme Based on the Kramers--Kronig Relations for Optical IM/DD Systems
Dong, Xiaohe
Zhang, Kuokuo
Zhang, Jiarui
Yang, Baoyin
Sun, Caiming
Signal Processing
The ever-growing demand for higher data rates in optical communication systems necessitates the development of advanced modulation formats capable of significantly enhancing system performance. In this work, we propose a novel modulation format derived from the Kramers--Kronig relations. This scheme effectively reduces the complexity of digital filtering and alleviates the demands on the digital-to-analog converter, offering a practical solution for high speed optical communication. The proposed modulation format was rigorously validated through experimental investigations using an optical wireless link. The results demonstrate a notable improvement in bit error rate (BER) performance and receiver sensitivity compared to PAM-4 and CAP-16 modulation schemes, with enhancements of 0.6 dB and 1.5 dB in receiver sensitivity, respectively. These improvements enable higher data transmission rates, positioning the Kramers--Kronig relations-based modulation format as a promising alternative to existing modulation techniques. Its potential to enhance the efficiency and capacity of optical communication systems is clearly evident. Future work will focus on extending its application to more complex scenarios, such as high-speed underwater optical communication systems, where advanced modulation formats are critical for overcoming bandwidth limitations.
title A Novel Modulation Scheme Based on the Kramers--Kronig Relations for Optical IM/DD Systems
topic Signal Processing
url https://arxiv.org/abs/2501.09992