December 12, 2008

10 Gb/s Access – Introducing the XG-fast Concept

  • Coomans W.
  • De Lind Van Wijngaarden A.
  • Duque A.
  • Galaro J.
  • Guenach M.
  • Hooghe K.
  • Maes J.
  • Moraes R.
  • Timmers M.

Traditionally, copper network operators complement a Fiber-To-The-Home (FTTH) strategy with a hybrid fiber-copper deployment in which fiber is gradually brought closer to the consumer, and Digital Subscriber Line (DSL) technology is used on the remaining copper. In this paper, we introduce the concept of XG-fast, a technology capable of delivering 10 Gb/s connection speeds over short copper pairs. Single-subscriber XG-fast devices allow increasing the speed of a nation-wide roll out of FTTH services, by overcoming the hurdles accompanying a traditional FTTH rollout. XG-fast should therefore be considered as an integrated component of the FTTH deployment. Using transceiver hardware, we show that multiple-gigabit speeds are achievable over typical drop lengths from front yard to customer premises equipment of up to 30 m. When an additional pair is available, the reach of the 10 Gb/s service can be extended by exploiting bonding and phantom mode. We describe a crosstalk cancellation scheme that exploits two-sided coordination of such bonded group. We assess the digital and analog complexity of XG-fast, forecasting when the technology could become commercially viable.

View Original Article

Recent Publications

August 09, 2017

A Cloud Native Approach to 5G Network Slicing

  • Francini A.
  • Miller R.
  • Sharma S.

5G networks will have to support a set of very diverse and often extreme requirements. Network slicing offers an effective way to unlock the full potential of 5G networks and meet those requirements on a shared network infrastructure. This paper presents a cloud native approach to network slicing. The cloud ...

August 01, 2017

Modeling and simulation of RSOA with a dual-electrode configuration

  • De Valicourt G.
  • Liu Z.
  • Violas M.
  • Wang H.
  • Wu Q.

Based on the physical model of a bulk reflective semiconductor optical amplifier (RSOA) used as a modulator in radio over fiber (RoF) links, the distributions of carrier density, signal photon density, and amplified spontaneous emission photon density are demonstrated. One of limits in the use of RSOA is the lower ...

July 12, 2017

PrivApprox: Privacy-Preserving Stream Analytics

  • Chen R.
  • Christof Fetzer
  • Le D.
  • Martin Beck
  • Pramod Bhatotia
  • Thorsten Strufe

How to preserve users' privacy while supporting high-utility analytics for low-latency stream processing? To answer this question: we describe the design, implementation and evaluation of PRIVAPPROX, a data analytics system for privacy-preserving stream processing. PRIVAPPROX provides three properties: (i) Privacy: zero-knowledge privacy (ezk) guarantees for users, a privacy bound tighter ...