Deep Learning Propagation Models over Irregular Terrain

Accurate path gain models are critical for coverage prediction and RF planning in wireless communications. In many settings irregular terrain induces blockages and scattering with great impact on path gain, making its prediction a challenging task. Current solutions for these environments are either computationally expensive or slope-intercept fits that cannot ...

Automated fiber type identification in SDN-enabled optical networks

We correlate accumulated dispersions measured in coherent receivers to autonomously identify fiber types in a 41-link network without traffic interruption. We achieve 99.66% identification level with only 100 uniformly distributed light paths, even with a 400 ps/nm measurement uncertainty

Recent Advances in Ultra-Wideband WDM Transmission based on Semiconductor Optical Amplifiers

We report on the use of semiconductor optical amplifiers to enlarge optical bandwidth of next generation WDM systems. We review recent results, including lab demonstration and field trial, based on novel 100+nm-wide SOA device.

5×510 Gbps Single-Polarization Direct-Detection WDM Transmission over 80 km of SSMF

We demonstrate 5-channel WDM DD transmissions over 80 km of SSMF with a net data rate per channel of 432 Gbps using either Kramers-Kronig detection or a low-complexity interference cancellation scheme

Experimental Verification of Equalization Enhanced Phase Noise in Kramers-Kronig Transmissions

We experimentally investigate, for the first time, the impact of laser phase noise in a 30 Gbaud 64 QAM system with Kramers-Kronig receiver, showing significant impacts of phase-to-amplitude noise conversion and equalization enhanced phase noise

Multi-Rate Prefix-Free Code Distribution Matching

We propose a multi-rate prefix-free code distribution matching (PCDM) algorithm that implements a fixed-length probabilistic constellation shaping. It uses various small codebooks in an adaptive manner, thereby improving the shaping performance of PCDM.

Slotted Optical Datacenter Networks with Sub-wavelength Resource Allocation

We give a formal description of dynamic resource allocation in a slotted DC network and present fast scheduling solutions to solve it. We then review the related scalability issues.

Cache-Aided Interference Channels

Over the past decade, the bulk of wireless traffic has shifted from speech to content. This shift creates the opportunity to cache part of the content in memories closer to the end users, for example in base stations. Most previous paper focuses on the reduction of load in the backhaul ...

Analysis And Design Of A Latency Control Protocol For Multi-Path Data Delivery With Pre-Defined QoS Guarantees

As the capacity and reliability of mobile networks increases, so does the demand for more responsive end-to-end services: applications such as Augmented Reality, live video conferencing and smart or autonomous vehicles require reliable, throughput-intensive end-to-end communications with strict delay constraints. Only consistently reliable delivery of data flows well within human ...

On Coding for Reliable VNF Chaining in DCNs

We study how erasure coding can improve service reliability in Data Center Networks (DCN) deploying Service Function Chains (SFCs). To this end, we find that coding for reliability can be best deployed in systems, where i) traffic is split into multiple parallel sub-flows, ii) each sub-flow is encoded; iii) SFC ...

Deterministic Dynamic Networks (DDN)

Today's network infrastructure evolves into two seemingly opposite directions: cloudification centralizes functions that used to be distributed for economies of scale, at the expense of latency, while latency-constrained applications are surging. this calls for a new architecture capable of distributed computing: The Edge Cloud network. Future 5G applications will impose ...

Increasing the Speed of an InP-Based Integration Platform by Introducing High Speed Electroabsorption Modulators

We report high speed electroabsorption modulators (EAMs), designed, fabricated and characterized within an open access generic foundry process. The EAM as a new building block is optimized in the existing platform, in which other BBs are established. By optimizing the EAM design layout, we show a static extinction ratio (static ...

Security for 5G and Beyond

The development of the Fifth Generation (5G) wireless networks is gaining momentum to connect almost all aspects of life through the network with much higher speed, very low latency and ubiquitous connectivity. Due to its crucial role in our lives, the network must secure its users, components, and services. The ...

An Overview of the OMAF Standard for 360° Video

Omnidirectional MediA Format (OMAF) is arguably the first virtual reality (VR) system standard, recently developed by the Moving Picture Experts Group (MPEG). OMAF defines a media format that enables omnidirectional media applications, focusing on 360° video, images, and audio, as well as the associated timed text, supporting three degrees of ...

How 64 GBaud optical carriers maximize the capacity in core elastic WDM networks with fewer transponders per Gb/s

Following the extensive investigations of the research community throughout the last 5 years regarding the transmission performance when roughly doubling the channel symbol rate in WDM systems from generic 32 GBaud to more than 60 GBaud, this evolution is about to become a reality in the field by the next ...

Pilot Allocation for Computationally Efficient Non-Iterative Estimation of Phase Noise in OFDM

This paper proposes a pilot subcarrier allocation approach for OFDM waveforms, which enables construction of phase-noise estimate with high efficiency and low overhead in non-iterative manner. The complexity and the performance of the overall phase-noise suppression algorithm together with the proposed pilot allocation approach are evaluated against a reference algorithm. ...

An 11 GHz dual-sided self-calibrating dynamic comparator in 28 nm CMOS

Licensee MDPI, Basel, Switzerland. This paper demonstrates a high-speed, low-noise dynamic comparator, employing self-calibration. The proposed dual-sided, fully-dynamic offset calibration is able to reduce the input-referred offset voltage by a factor of ten compared to the uncalibrated value without any speed or noise penalty and with less than 5% power ...

DyMo: Dynamic Monitoring of Large-Scale LTE-Multicast Systems

IEEE LTE evolved Multimedia Broadcast/Multicast Service (eMBMS) is an attractive solution for video delivery to very large groups in crowded venues. However, the deployment and management of eMBMS systems are challenging, due to the lack of real-time feedback from the user equipments (UEs). Therefore, we present the Dynamic Monitoring (DyMo) ...

Friendly, appealing or both? Characterising user experience in sponsored search landing pages

  • Bron M.
  • Chute M.
  • Evans H.
  • Lalmas M.
  • Redi M.
  • Silvestri F.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Many of today's websites have recognised the importance of mobile friendly pages to keep users engaged and to provide a satisfying user experience. However, next to the experience provided by the sites themselves, ...

Analyzing uber's ride-sharing economy

  • Aiello L.
  • Djuric N.
  • Grbovic M.
  • Kooti F.
  • Lerman K.
  • Radosavljevic V.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Uber is a popular ride-sharing application that matches people who need a ride (or riders) with drivers who are willing to provide it using their personal vehicles. Despite its growing popularity, there exist ...