January 01, 2019

How 64 GBaud optical carriers maximize the capacity in core elastic WDM networks with fewer transponders per Gb/s

  • Bertolini M.
  • Lavigne B.
  • Zami T.

Following the extensive investigations of the research community throughout the last 5 years regarding the transmission performance when roughly doubling the channel symbol rate in WDM systems from generic 32 GBaud to more than 60 GBaud, this evolution is about to become a reality in the field by the next 12 months. The common understanding is that it will reduce the cost per transmitted Gb/s, above all once the related faster optoelectronic interfaces will be mature enough. This paper refines this consideration by quantifying the related transponders saving per Gb/s on 3 distinct backbone WDM networks. In parallel, it reports how much extra network capacity stems from routing individual 64 GBaud subcarriers 75 GHz apart to serve connections capacity of which ranges from 100 Gb/s to 1 Tb/s. It eventually discusses the impact on the network performance when constraining the regenerators placement along the light paths of the accommodated services or when simplifying the elastic regenerators.

View Original Article

Recent Publications

January 01, 2019

Friendly, appealing or both? Characterising user experience in sponsored search landing pages

  • Bron M.
  • Chute M.
  • Evans H.
  • Lalmas M.
  • Redi M.
  • Silvestri F.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Many of today's websites have recognised the importance of mobile friendly pages to keep users engaged and to provide a satisfying user experience. However, next to the experience provided by the sites themselves, ...

January 01, 2019

Analyzing uber's ride-sharing economy

  • Aiello L.
  • Djuric N.
  • Grbovic M.
  • Kooti F.
  • Lerman K.
  • Radosavljevic V.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Uber is a popular ride-sharing application that matches people who need a ride (or riders) with drivers who are willing to provide it using their personal vehicles. Despite its growing popularity, there exist ...

January 01, 2019

The paradigm-shift of social spambots: Evidence, theories, and tools for the arms race

  • Cresci S.
  • Petrocchi M.
  • Pietro R.
  • Spognardi A.
  • Tesconi M.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Recent studies in social media spam and automation provide anecdotal argumentation of the rise of a new generation of spambots, so-called social spambots. Here, for the first time, we extensively study this novel ...