Abstract
Matching filter (MF)-free digital filter multiplexed (DFM) single sideband (SSB) OFDM intensity modulation and direct detection (IMDD) dual-channel transmissions of 51.25Gbit/s over 25km SSMFs are experimentally demonstrated. It is shown that both transmission system impairments and digital filter characteristic variations can only lead to <1dB transmission performance degradations. Compared with the MF-free DFM-based double sideband (DSB) OFDM technique, the SSB technique has a similar receiver DSP complexity and provides almost twice the maximum signal transmission capacity. When compared with a conventional DFM technique incorporating a dedicated shaping and matching filter pair for each channel, the present SSB technique achieves a 10-fold reduction of receiver DSP complexity and 7.82Gbit/s of additional signal transmission throughput. We demonstrate these throughput and complexity advantages by modelling and measurement.
| Original language | English |
|---|---|
| Article number | 9373899 |
| Number of pages | 13 |
| Journal | IEEE Photonics Journal |
| Volume | 13 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Apr 2021 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2009-2012 IEEE.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Funding
Manuscript received October 10, 2020; revised February 23, 2021; accepted March 7, 2021. Date of publication March 9, 2021; date of current version March 31, 2021. This work was supported in part by the DESTINI project funded by the ERDF under the SMARTExpertise scheme, and in part by the DSP Centre funded by the ERDF through the Welsh Government. Corresponding author: W. Jin (e-mail: [email protected]).
Keywords
- Digital orthogonal filtering
- intensity modulation and direct detection (IMDD)
- single sideband (SSB)
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