- Pianese F.
- Sarkar S.
- Signorini M.
The design of a successful distributed system for enabling payments and small transactions among Internet users has long been a major challenge in applied computer science. Bitcoin, the first cryptocurrency having reached world-wide popularity, suffers from sustainability problems such as inefficient energy expenditure for its network operation and from perverse ...
- Fierrez J.
- Gonzalez E.
- Gonzalez-Sosa E.
- Patel V.
- Vera-Rodriguez R.
Biometrics have been tradittionally based on images acquired in the visible spectrum. In this paper, we will go first into details regarding the regions beyond the visible spectrum that have been already explored in the literature for biometrics to overcome some of the limitations found in the visible region. Later, ...
The digital system of the future will face the growing challenge of controlling the system behavior in complex dynamically evolving environments. In this paper, we examine the applicability of a new management paradigm based on Reinforcement Learning approach, where no preliminary specification of the system model is required. In contrast, ...
The concept of Service Function Chaining and Network Functions Virtualisation provides a great degree of flexibility for the rapid deployment of new services in service providers' environments. Data model, metadata and descriptors for virtual network function elements, virtual links, connection points, Virtual Network Function Forwarding Graphs and Network Forwarding paths ...
In this demonstration, we present a prototype of Big Switch Abstraction to support network as service through the realization of Virtual Network Function Forwarding Graphs and Network forwarding paths.
An advanced telco cloud simulator and its usage on modelling multi-cloud and 5G multi-access environments
This paper introduces an advanced Telco Cloud Simulator that realistically models user behavior (users of different types moving around and demanding network resources) and the effect of this behavior on the relating cloud environment and the distributed Mobile Edge Computing (MEC) subsystems. Expected inputs of the simulation are the following: ...
- Bui D.
- Le Pallec .
- Le Sauze N.
- Noirie L.
- Peloso P.
At the dawn of a fully connected world with many different devices, benefiting from the whole richness of IoT services still represents a complex task for end-users. To lessen such a burden, we propose and demonstrate a solution that combines an SDN-based IoT-network platform and a service recommendation assistant. This ...
Reference architectures such as ETSI's Network Function Virtualisation Reference Architecture has the potential not just to clarify terminology but to confuse it. We propose mapping such an architecture and the concepts therein into a properly defined ontology based upon a formal description logic semantics. This enables modelling and reasoning over ...
In this demonstration, we show the applicability of a new management paradigm based on Reinforcement Learning approach for the control of systems' behavior in complex dynamically evolving environments, without requiring preliminary specifications of the system models. The learning agent identifies the most adequate control policies in live interaction with a ...
- Che D.
- Chen X.
- Hu Q.
- Li A.
- Shieh W.
High-speed transoceanic optical fiber transmission using direct modulation (DM) and direct detection (DD) was one of the most stirring breakthroughs for telecommunication in 1990s, which drove the internet as a global phenomenon. However, the later evolution of optical coherent communications in 2000s gradually took over the long-haul applications, due to ...
A fully integrated scalable W-band phased-array module with integrated antennas, self-alignment and self-test
Advanced SiGe BiCMOS and CMOS processes continue to push the frontier on millimeter-wave (mm-wave) and highly integrated phased-array systems for a variety of communication applications [1,3]. Furthermore, next-generation mobile technology (5G) demands ultra-low latency and high data-rates with ubiquitous deployment supporting multi-users through the use of pico-cells. These cells may ...
- Husain S.
- Kunz A.
- Prasad A.
- Samdanis K.
- Song J.
Network slicing is an end-to-end concept that encompasses network functions, radio accesses, and clouds for enabling customized information-centric Internet-of-Things (IoT) services. The key idea is to virtualize all the resources from radio accesses to IoT service layers, so that IoT service providers can automate resource provisioning and management for users. ...
A flowers of sulfur (FoS) corrosion test chamber has been developed by the iNEMI taskforce on creep corrosion on printed circuit boards (PCBs). Besides testing for creep corrosion, the FoS chamber has the potential of replacing the mixed-flowing gas (MFG) chamber as an industry-standard, general-purpose corrosion chamber for testing a ...
iNEMI project on process development of BISN-based low temperature solder pastes â" Part II: Characterization of mixed alloy BGA solder joints
In 2015, the International Electronics Manufacturing Initiative (iNEMI) initiated the Bismuth-Tin (Bi-Sn) based Low-Temperature Soldering Process and Reliability (LTSPR) Project. The goal of this project was to address the challenge of evaluating new formulations from multiple suppliers of low temperature melting solder pastes incorporating Bi-Sn solder metallurgy. These new formulations ...
A 0.25 - 1.7-GHz, 3.9 -13.7 mW Power-Scalable, -10-dBm Harmonic Blocker-Tolerant Mixer-First RF-to-Digital Receiver for Massive MIMO Applications
- Alon E.
- Lacaille G.
- Lu P.
- Narevsky N.
- Niknejad A.
- Nikolic B.
- Puglielli A.
- Trotskovsky K.
- Wang Z.
- Whitcombe A.
- Wright G.
To be cost-effective and energy-efficient, massive multiple-input multiple-output (MIMO) arrays must be constructed from radio elements with low power and high linearity, but can tolerate higher noise than conventional stand-alone radios. This letter presents a low-power 0.25-1.7-GHz power- and resolution-scalable mixer-first receiver tailored for variable-element massive MIMO systems with digital ...
- Juszczak G.
For several years, cloud computing has been increasingly appearing in the global IT market, both in corporate infrastructure and among private users. In medium and large companies, they replace the current, not very flexible, poorly scalable and often expensive computer infrastructure, and in the case of small businesses, startups and ...
- Cho J.
- Guan K.
- Winzer P.
Fiber-optic transmission systems provide large capacities over enormous distance but are vulnerable to simple eavesdropping attacks at the physical layer. We classify key-based and keyless encryption and physical layer security techniques and discuss them in the context of optical multiple-input-multiple-output space-division multiplexed (MIMO-SDM) fiber-optic communication systems. We show that MIMO-SDM ...
- Delezoide C.
- Pesic J.
- Pointurier Y.
- Seve E.
Using monitored physical parameters in a learning process, we decrease design margins by reducing uncertainties on the input parameters of a Quality of Transmission (QoT) tool, improving the accuracy of the signal-to-noise ratio prediction.
This paper presents an integrated study of dynamic control format indicator impact on downlink throughput in Long Term Evolution (LTE) network based on number of users and configured system bandwidth. CFI (Control Format Indicator) is an indicator notifying number of OFDM symbols used for carrying PDCCH (Physical Downlink Control Channel) ...
- Bulja S.
- Doumanis E.
- Kozlov D.
In this paper we introduce a new family of low-profile and high quality factor distributed resonators, termed concentric distributed resonators. The study of the proposed resonators commences by the investigation of its key parameters, such as frequency of operation, quality factor and maximum electric fields as a function of the ...