May 11, 2017

A Novel Ultra-broadband, Hybrid High-Low Band Wireless Access

  • Calin D.
  • Kaya A.
  • Viswanathan H.

This paper addresses the design of an ultra-broadband wireless access system, as an alternative to fiber to the home (FTTH) deployments. Hence, the system must be capable of delivering very high data rates to indoor users without the need of deploying fiber to homes. We show that a hybrid wireless access system with outdoor deployed cell sites operating jointly across high and low spectrum bands enables ultra-broadband wireless connectivity to indoor users with indoor antennas close to the windows. On the other hand, a system operating in the 28 GHz band alone does not achieve the target performance. We have created a representative suburban neighborhood via the Bell Labs WiSE (Wireless System Engineering) 3D ray tracing tool and explored multiple system design options to provide such high data rates to homes. Via 3D ray tracing environment simulations, we demonstrate that sustained throughputs on the order of 100Mbps at the cell edge may be delivered to multiple homes within the representative suburban neighborhood. Further, we studied the sensitivity to parameters such as density of sites, number of active beams, Effective Isotropic Radiated Power (EIRP) and interference characteristics.

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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 ...