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

Paper Details

Date Published: 14 February 2019
PDF: 4 pages
Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104802 (14 February 2019); doi: 10.1117/12.2524852
Show Author Affiliations
Jian Zhao, South China Univ. of Technology (China)
Fei Ji, South China Univ. of Technology (China)
Paul Townsend, Tyndall National Institute (Ireland)
Univ. College Cork (Ireland)


Published in SPIE Proceedings Vol. 11048:
17th International Conference on Optical Communications and Networks (ICOCN2018)
Zhaohui Li, Editor(s)

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