June 26, 2017

"VERNE": New Packet-Optical Network for Optically Transparent and Lossless Data Centers

  • Chiaroni D.
  • Uscumlic B.

Further growth of data centers is imposing to look for very scalable, cheap and energy efficient interconnection network inside data centers. In this paper, we propose a new packet-optical network called "VERNE", aiming to satisfy the above requirements by resorting to the all-optical and ``lossless'' operation (by "lossless" we mean operation without packet collisions during their transport from source to destination). The VERNE's network and switching node architecture is detailed for the first time, and the numerical evaluation of the VERNE solution w.r.t. Ethernet data center is provided. The results suggest that VERNE significantly reduces the number of optical transponders required for data center operation.

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Recent Publications

June 19, 2017

COMBINING BELIEF PROPAGATION AND SUCCESSIVE CANCELLATION LIST DECODING OF POLAR CODES ON A GPU PLATFORM

  • Cammerer S.
  • Hoydis J.
  • Leible B.
  • Stahl M.
  • Ten Brink S.

The decoding performance of polar codes strongly depends on the decoding algorithm used, while also the decoder throughput and its latency mainly depend on the decoding algorithm. In this work, we implement the powerful successive cancellation list (SCL) decoder on a GPU and identify the bottlenecks of this algorithm with ...

June 04, 2017

A New PRACH Transmission Scheme in Unlicensed Spectrum

  • Luo Z.
  • Meng Y.
  • Tao T.

For the unlicensed spectrum, the occupied bandwidth requirement is demanded by some regulations. The legacy scheme of Physical Random Access Channel (PRACH) for Long Term Evolution (LTE) cannot satisfy it. In this paper, we propose a novel PRACH transmission scheme to satisfy the requirement of unlicensed spectrum based on preamble ...

June 01, 2017

Mutual service processes in Euclidean spaces: existence and ergodicity

  • Baccelli F.
  • Mathieu F.
  • Norros I.

Consider a set of objects, abstracted to points of a spatially stationary point process in R-d, that deliver to each other a service at a rate depending on their distance. Assume that the points arrive as a Poisson process and leave when their service requirements have been fulfilled. We show ...