Preserving Privacy in Social City Networks via Small Cells

  • Kawsar F.
  • Vanderhulst G.

An increasingly large amount of small cells -- e.g. WiFi hotspots -- is being deployed in residential areas to connect a plethora of smart devices to the Internet. In this paper, we present a social city network leveraging small cells for sharing content geographically and temporarily whilst preserving the privacy ...


  • Kempers R.
  • Robinson A.
  • Siedel S.
  • Smith K.

Though heat pipes are recognized as a viable heat transfer device for many different applications, the thermal mechanisms driving the heat transfer are still not fully understood. By fabricating and testing a transparent sapphire heat pipe, with water as the working fluid, the dominant mechanisms of boiling and condensation were ...


  • Kempers R.
  • Robinson A.
  • Siedel S.
  • Smith K.

In certain applications geometric constraints may make it impractical to use a straight thermosyphon. This paper aims to characterize the performance of a counter-flow thermosyphon with varying bend angles in the adiabatic section and a range of fluid loadings. The results of this study demonstrate that adequate levels of heat ...

Analytic Pattern Matching: From DNA to Twitter

  • Jacquet P.
  • Szpankowski W.

Pattern Matching plays a central role in DNA analysis and text correlation detection. This book presents a survey on technical tools that are used to perform and predict performance of pattern matching on random strings. Methods are based on analytic combinatorics, generating functions and asymptotic analysis.

Handbook on optimization, learning, operation and cooperation methods

  • Ewe L.
  • Gruber M.

This deliverable concludes the work of the work package “Network Empowerment” with a quantitative comparison of a selection of methods, complemented by a qualitative, handbook-like conclusion on a reasonable classification of methods and recommendations on their suitability for telecom-relevant problems. The work package had originally been designed to capture three ...

Increasing Polarization-Mode Dispersion Tolerance of Coherent Receivers by Joint Optimization of Chromatic Dispersion and Butterfly Equalizers

  • Winzer P.
  • Xie C.

We propose a joint equalizer optimization technique for a coherent receiver and show by simulations that this technique can restore the PMD tolerance of a coherent receiver that is degraded by other inter-symbol interference impairments such as residual CD and narrow-band filtering.

Secure Communications with Superimposed Pilots

  • Chen Y.

In this paper, we propose a system concept enabling secure communications by introducing superimposed pilots. The superimposed pilots can be exploited in a trellis-based joint channel tracker and data detector by the user of interest. Further, the user of interest can adjust the power ratio between the user data and ...

Secure Communications with Superimposed Pilots

  • Chen Y.

In this paper, we propose a system concept enabling secure communications by introducing superimposed pilots. The superimposed pilots can be exploited in a trellis-based joint channel tracker and data detector by the user of interest. Further, the user of interest can adjust the power ratio between the user data and ...

Duo-Binary Transmission for Bandwidth-Limited Intensity-Modulated and Direct-Detection Optical Channels

  • Chen Y.
  • Dupuy J.
  • Jorge F.
  • Kaneda N.
  • Konczykowska A.
  • Lee S.
  • Pfau T.

100-GBaud duo-binary transmission is experimentally demonstrated over an intensity-modulated, direct-detection single-mode fiber link, overcoming bandwidth limitations from optical components with -3dB bandwidths as low as 35 GHz.

D-SPARQ: Distributed, Scalable and Efficient RDF Query Engine

  • Pascal Hitzler
  • Raghava Mutharaju
  • Sala A.
  • Sherif Sakr

We present D-SPARQ, a distributed RDF query engine that combines the MapReduce processing framework with a NoSQL distributed data store, MongoDB. The performance of processing SPARQL queries mainly depends on the eefficiency of handling the join operations between the RDF triple patterns. Our system features two unique characteristics that enable ...

Devices applications of hybrid 3-5 on Silicon integration

  • Accard A.
  • De Valicourt G.
  • Duan G.
  • Girard N.
  • Kaspar P.
  • Le Liepvre A.
  • Levaufre G.
  • Make D.

Recent progresses on hybrid integration of III-V on Silicon devices using a wafer bonding technique are presented as well as their applications for next generation of access, metropolitan and long haul networks

In-Network Quality Optimization for Adaptive Video Streaming Services

  • Bouten N.
  • De Turck F.
  • Famaey J.
  • Latre S.
  • Van Leekwijck W.


Task Assignment Strategies for Pools of Baseband Computation Units in Future Cellular Networks

  • Grob-Lipski H.
  • Haberland B.
  • Scholz S.
  • Werthmann T.

A popular architecture for cellular mobile networks is to place Remote Radio Heads (RRHs) on the cell towers and connect those via fibers with a centralized pool of baseband Units (BBUs). Among other things, the centralization of baseband computation faciliates multiplexing gains and can thereby save compute resources. To realize ...

Platform for future pervasive telecommunication market

  • Wajda W.

Market evolution poses challenges for future telecommunication network. On the one site pressure on network operators regarding technology investments and decreasing revenue and on the other site changes in customer behavior and perception rise to the quest for re-organization and for new business strategies of the Telco business. This paper ...

Automatic Learning of Anonymization Functions for Graphs and Dynamic Graphs

  • Maag M.

Data privacy is a major problem that has to be considered before releasing datasets to the public or even to a partner company that would compute statistics or make a deep analysis of these data. Privacy is insured by performing data anonymization as required by legislation. In this context, many ...

Nonlinearity of a 2 Degree of Freedom Velocity Amplified Electromagnetic Vibrational Energy Harvester and Optimization of Coil Parameters

  • Boco E.
  • Frizzell R.
  • Kelly G.
  • Nico V.
  • O’Donoghue D.
  • Punch J.

A 2DOF velocity amplified electromagnetic vibrational energy harvester is analyzed. The system consists of two masses oscillating relative to each other in response to external excitation. The large mass is designed with a centrally located cavity in which a second smaller mass is placed. This configuration allows the larger mass ...

Bell Labs 5G UFMC Air Interface Demonstrator

  • Heimpel H.
  • Koppenborg J.
  • Mayer H.
  • Samardzija D.
  • Schaich F.
  • Wild T.

A new waveform approach “Universal Filtered Multi-Carrier” (UFMC), being better suited for 5G has been invented by Bell Labs. Simulation and trials with an 5G UFMC Air Interface demonstrator to show the benefits of this new approach are discussed

3GPP ACLR measurements for Millimeter-Wave Wireless Backhaul Link with Self-Heterodyning Mixing

  • Ferling D.
  • Luz G.
  • Maier S.
  • Pascht A.
  • Schlesinger H.
  • Woerner S.
  • Yu X.

This paper analyzes the signal quality achievable with a novel system architecture for low-power small cell remote units with integrated millimeter-wave wireless backhaul. The data signal on the backhaul link uses the same 3GPP compliant signal as with the access link serving the users. In contrast to existing systems, the ...

How a "Wi-Fi first" strategy benefits EMEA MSOs

  • Davidson S.

Wi-Fi first presents a market opportunity for MSOs. Voice over Wi-Fi enabled devices default to using the cable operator's Wi-Fi network, and in the case of smartphones switch to cellular when out of Wi-Fi range.