Li, Z;
Erkilinc, MS;
Bouziane, R;
Thomsen, BC;
Bayvel, P;
Killey, RI;
(2016)
Simplified DSP-Based Signal-Signal Beat Interference Mitigation Technique for Direct Detection OFDM.
Journal of Lightwave Technology
, 34
(3)
pp. 866-872.
10.1109/JLT.2015.2505187.
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Abstract
Short- and medium-haul links in interdata center, access, and metro networks require cost-effective direct-detection wavelength-division multiplexing transceivers offering energy efficiency, high information spectral density (ISD), and dispersion tolerance. Single-sideband orthogonal frequency-division multiplexing (SSB-OFDM) with direct detection is a potential solution; however, it suffers a penalty from signal-signal beat interference (SSBI) caused by the square-law photodetection. In this paper, a novel DSP-based SSBI mitigation technique, with lower complexity than previously proposed methods, is proposed and assessed through numerical simulations for the first time. The performance improvement is quantified by simulations of 9 × 112 Gb/s 16-QAM SSB-OFDM signal with a net optical ISD of 2.1 (b/s)/Hz. The performance is shown to be similar to that of the more complex receiver-based iterative SSBI compensation technique. Simulations predict an 8.7 dB reduction in the required OSNR at the 7% overhead HD-FEC threshold, and increases up to 100% in maximum reach over uncompensated standard single-mode fibre using the proposed simplified SSBI compensation technique.
| Type: | Article |
|---|---|
| Title: | Simplified DSP-Based Signal-Signal Beat Interference Mitigation Technique for Direct Detection OFDM |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JLT.2015.2505187 |
| Publisher version: | https://doi.org/10.1109/JLT.2015.2505187 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Optical communication, spectrally efficient wavelength division multiplexing, signal-signal beat interference cancellation, direct detection, subcarrier modulation, orthogonal frequency division multiplexing, electronic pre-distortion |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10056082 |
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