Ray Tracing Analysis and Field Trials of 3D Beamforming in Real Deployments

  • Albrecht T.
  • Halbauer H.
  • Herzog G.
  • Hoek C.
  • Koppenborg J.

In this paper, the properties and capabilities of 3D beamforming in a real propagation scenario have been analyzed by ray tracing simulation and been compared with field measurements for this environment. Therefore, a real propagation scenario comprising line-of-sight (LOS) and non-LOS (NLOS) areas has been modeled and applied to a ray tracing simulation tool. The parameters of interest are the angle spreads of azimuth and elevation on base station (BS) and user equipment (UE) at different characteristic outdoor locations. The purpose of this investigation is twofold. First, the ray tracing simulation model has been verified by field measurements. Second, it is to show the suitability of a specific area for 3D beamforming, i.e. the achievable separation of vertical beam directions in NLOS situations can be derived from ray tracing simulations even with a relatively simplified ray tracing model of the area.

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 ...