Adaptively loaded offset-QAM OFDM based on set-partitioned QAM in IMDD systems

Jian Zhao; Fei Ji; Paul Townsend

doi:10.1117/12.2524852

14 February 2019 Adaptively loaded offset-QAM OFDM based on set-partitioned QAM in IMDD systems

Jian Zhao, Fei Ji, Paul Townsend

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 1104802 (2019) https://doi.org/10.1117/12.2524852
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

Abstract

We propose adaptively loaded set-partitioned offset quadrature amplitude modulation (SP-offset-QAM) orthogonal frequency division multiplexing (OFDM) for low-cost intensity-modulation direct-detection (IM/DD) communication systems. We compare this scheme with conventional OFDM in 40-Gbit/s experiments over 50-km single-mode fiber. It is shown that the use of SP-QAM formats, together with the adaptive loading algorithm specifically designed to this group of formats, improves the performance of offset-QAM OFDM. It is also shown that the proposed scheme exhibits better performance than SP-QAM based conventional OFDM at back-to-back and after 50-km transmission.

Citation Download Citation

Jian Zhao, Fei Ji, and Paul Townsend "Adaptively loaded offset-QAM OFDM based on set-partitioned QAM in IMDD systems", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104802 (14 February 2019); https://doi.org/10.1117/12.2524852

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