Low complexity DSP for high speed optical access networking

Jinlong Wei, Cedric F. Lam, Ji Zhou, Ivan Aldaya, Elias Giacoumidis, Andre Richter, Qixiang Cheng, Richard Penty, Ian White

Research output: Contribution to journalArticlepeer-review


A novel low-cost and energy-efficient approach for reaching 40 Gb/s signals is proposed for cost-sensitive optical access networks. Our proposed design is constituted of an innovative low-complex high-performance digital signal processing (DSP) architecture for pulse amplitude modulation (PAM-4), reuses existing commercial cost-effective 10-G components and eliminates the need of a power-hungry radio frequency (RF) component in the transmitter. Using a multi-functional 17-tap reconfigurable adaptive Volterra-based nonlinear equalizer with noise suppression, significant improvement in receiver optical power sensitivity is achieved. Results show that over 30 km of single-mode fiber (SMF) a link power budget of 33 dB is feasible at a bit-error-rate (BER) threshold of 10-3.

Original languageEnglish
Article number3406
JournalApplied Sciences (Switzerland)
Issue number8
Publication statusPublished - 10 Apr 2021

Bibliographical note

Funding Information:
Funding: This research was funded by the European Union under the CEEOALAN project with grant No. 623,515, and by the German Ministry of Education and Research under the KIGLIS project with grant No. 16KIS1230.

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Copyright 2021 Elsevier B.V., All rights reserved.


  • Decision feedback equalization
  • Digital signal processing
  • Feedforward equalization
  • Noise suppression
  • Passive optical network

ASJC Scopus subject areas

  • General Materials Science
  • Instrumentation
  • General Engineering
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes


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