Fair comparison of complexity between a multi-band CAP and DMT for data center interconnects

Jinlong Wei, Christian Sánchez, Elias Giacoumidis

Research output: Contribution to journalArticlepeer-review


We present the first known detailed analysis and fair comparison of complexity of 56-Gb/s Multi-band CAP and DMT over 80-km DCF-free SMF links based on intensity modulation and direct detection (IMDD) for data center interconnects. We show that the matched FIR filters and (I)FFT take the majority of the complexity of the Multi-band CAP and DMT, respectively. Choice of the multi-band CAP sub-band count and the DMT (I)FFT size makes significant impact to system complexity or performance and trade-off must be considered.
Original languageEnglish
Number of pages4
JournalOptics Letters
Issue number19
Early online date22 Aug 2017
Publication statusPublished - 25 Sept 2017

Bibliographical note

© 2017 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.

Funding: Seventh Framework Programme (FP7) (623515); Horizon 2020 Framework Programme (H2020) (659950)


  • Fiber optics communications
  • Modulation


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