Max-Lloyd Quantization of Geometrically and Probabilistically Shaped Circular QAM.

  • Almonacil S.
  • Jardel F.
  • Jenneve P.
  • Layec P.

We apply a Max-Lloyd quantization scheme for geometrically and probabilistically shaped circular QAM. We show that the signal-to-quantization-noise ratio at the DAC output can be improved up to +0.5 dB with a 4-bits DAC comparatively to the uniform quantizer.

CBOSS: bringing traffic engineering inside data center networks

  • Benzaoui N.
  • Bigo S.
  • Dong P.
  • Dupas A.
  • Dutisseuil E.
  • Estaran J.
  • Gonzalez M.
  • Mardoyan H.
  • Pointurier Y.
  • Uscumlic B.
  • Valicourt G.
  • Van Q.
  • Verchere D.
  • Y. Chen

Today’s traditional, hierarchical, fullelectronic data centers cannot guarantee quality of service (QoS) for latency-sensitive applications or carrier-grade multitenancy.We propose cloud burst optical-slot switching (CBOSS), an intra-data center network architecture leveraging the original optical components and custom software- defined network (SDN) control to enable traffic engineering. In particular, we demonstrate network ...

Slot switching for deterministic dynamic edge cloud networks

  • Benzaoui N.
  • Bigo S.
  • Dembeck L.
  • Gebhard U.
  • Lautenschlaeger W.
  • Pointurier Y.

We review how two optical slot switching technologies can provide end-to-end service guarantees in next generation edge-cloud-based networks: Optical Ethernet for fronthaul, midhaul and metro networks, and CBOSS for intra data center networking.

Complex overlapping concepts: An effective auditing methodology for families of similarly structured BioPortal ontologies

  • Chen Y.
  • Elhanan G.
  • Geller J.
  • Ochs C.
  • Perl Y.
  • Zheng L.

In previous research, we have demonstrated for a number of ontologies that structurally complex concepts (for different definitions of ?complex?) in an ontology are more likely to exhibit errors than other concepts. Thus, such complex concepts often become fertile ground for quality assurance (QA) in ontologies. They should be audited ...

Opportunistic Spatial Preemptive Scheduling For URLLC and eMBB Coexistence in Multi-User 5G Networks

  • Esswie A.
  • Pedersen K.

The fifth generation (5G) of the mobile networks is envisioned to feature two major service classes: ultra-reliable low-latency communications (URLLC) and enhanced mobile broadband (eMBB). URLLC applications require a stringent one-way radio latency of 1 ms with 99.999% success probability while eMBB services demand extreme data rates. The coexistence of ...

Parameter Identification of a Winding Function based Model for Fault Detection of Induction Machines

  • Huynh Van Khang
  • Kjell G. Robbersmyr
  • Pawlus W.
  • Surya Teja Kandukuri

Prediction of machines' faulty parts is important in industrial applications in order to reduce productivity losses. As far as electrical machines are considered, a model-based fault diagnosis approach is usually used for this purpose. The model is derived from the modified winding function theory and hence, it requires a considerable ...

Digital disruption of the AEC industry: technology-oriented scenarios for possible future development paths

  • Airaksinen M.
  • Casey T.
  • Kallio J.
  • Lavikka R.

© 2018 Aalto University Decision-makers in the architecture, engineering and construction (AEC) industry lack knowledge about the implementation of digitalization to generate value. We applied a scenario planning method developed by Schoemaker and Mavaddat to provide decision-makers with information for using digital data and technologies to create value for customers. ...

Deterministic Scheduling of Periodic Messages for Cloud RAN

  • Bart D.
  • Barth D.
  • Guiraud M.
  • Leclerc B.
  • Marce O.
  • Olivier Marcé
  • Strozecki Y.

A recent trend in mobile networks is to centralize in distant data-centers the processing units which were attached to antennas. The main challenge is to guarantee that the latency of the periodic messages sent from the antennas to their processing units and back fulfills protocol time constraints. We show that ...

User Scheduling in Massive MIMO

  • Larsson E.
  • Yang H.

Massive MIMO relies on nearly orthogonal user channels to achieve unprecedented spectral efficiency. But in LoS (line-of-sight) environment some users can be subjected to similar channel vectors. Serving users with similar channel vectors simultaneously can severely compromise the throughput performance to all users. We propose a scheduler that identifies users ...

On Delay-Sensitive Healthcare Data Analytics at the Network Edge: A Deep Learning Approach

  • Al-Sakib Khan Pathan
  • Gacanin H.
  • Zubair Md. Fadlullah

As the age of the Internet of Things (IoT) continues to flourish, the concept of smart healthcare has taken an unprecedented turn due to interdisciplinary thrusts. To carry the big healthcare data emanating from the plethora of bio-sensors and machines in the IoT sensing plane to the central cloud, next ...

OFDM-Autoencoder for End-to-End Learning of Communications Systems

  • Cammerer S.
  • Doerner S.
  • Felix A.
  • Hoydis J.
  • Ten Brink S.

We extend the idea of end-to-end learning of communications systems through deep neural network (NN)- based autoencoders to orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP). Our implementation has the same benefits as a conventional OFDM system, namely singletap equalization and robustness against sampling synchronization errors, which turned out ...

5G Edge Resource Federation: dynamic and cross-domain network slice deployment

  • Alberi-Morel M.
  • Amina Boubendir
  • Boubendir A.
  • Christophe Le Toquin
  • Fabrice Guillemin
  • Faucheux F.
  • Guillemin F.
  • Kerboeuf S.
  • Lafragette J.
  • Orlandi B.
  • Toquin C.

We demonstrate an architecture where a network operator can achieve a federation of access and edge resources owned by private third-party actors through B2B collaboration APIs. This federation is crucial for a global orchestration of multi-actor and cross-domain resource infrastructures in a 5G ecosystem. Through a Proof-of-Concept, we illustrate on-demand ...

Vehicle to Infrastructure Communications Design in Urban Hyperfractals

  • Jacquet P.
  • Popescu D.

This study exploits our innovative model called "hyperfractal" that captures the self-similarity of the urban vehicular networks as well as incorporating road-side infrastructure with its own self-similarity. The goal is to provide understanding of achievable trade-offs in operating the road-side units under the constraint of minimum routing path delay while ...

Detection of Ambient Backscatter Signals from Multiple-Antenna Tags

  • Chen C.
  • Fan L.
  • Guan H.
  • Verde F.
  • Wang G.

Ambient backscatter has been introduced as an potential technology that is effective to address communication and energy problems for battery-free devices. Most existing studies about ambient backscatter are based on the assumption of single antenna at each tag. In this paper, we show that multiple-antenna tags are practically useful and ...

Federation of Cross-Domain Edge Resources: A Brokering Architecture for Network Slicing

  • Alberi-Morel M.
  • Boubendir A.
  • Faucheux F.
  • Guillemin F.
  • Kerboeuf S.
  • Lafragette J.
  • Orlandi B.
  • Toquin C.

We present an architecture enabling a network operator to federate IT and network resources owned by private third-party actors located at the edge of the network. The cornerstone of this architecture is a brokering layer that relies on a graph-based resource database. The brokering layer contains all the necessary functions ...

Coffee exports and industrialization in Brazil

  • Barros F.
  • Ferreira A.
  • Marcondes R.
  • Prioste R.

© 2018 Informa UK Limited, trading as Taylor & Francis Group We investigate the dynamic relationship between coffee exports and machinery imports in Brazil from 1869 to 1939. Our tests reveal cointegration and bidirectional causality in the temporal sense. This evidence suggests that foreign exchange real revenues from coffee exports ...

Handling Delay in 5G Ethernet Mobile Fronthaul Network

  • Chen D.
  • Raimena Veisllari
  • Steinar Bjørnstad

In this paper we discuss how to handle delay in 5G Ethernet mobile fronthaul networks. The reasons for the delay requirements, addressing both service and protocol specific requirements, are discussed together with prime carrier needs of scalability of networks and easy migration to new network solutions. In light of these ...

Dev-for-Operations and Multi-sided Platform for Next Generation Platform as a Service

  • Berde B.
  • Orr M.
  • Ramos A.
  • Shatnawi A.
  • Van Rossem S.

This paper presents two new challenges for the Telco ecosystem transformation in the era of cloud-native microservice-based architectures. (1) Development-for-Operations (Dev-for-Operations) impacts not only the overall workflow for deploying a Platform as a Service (PaaS) in an open foundry environment, but also the Telco business as well as operational models ...

Performance of Balanced Fairness in Computer Clusters: A Recursive Approach

  • Bonald T.
  • Comte C.
  • Mathieu F.

Understanding the performance of computer clusters is crucial for proper dimensioning. One of the main challenge is to take into account the complex interactions between computers that process jobs in parallel. In particular, a job can generally not be processed by any computer of the cluster due to various constraints ...

Limited Sharing Multi-Party Computation for Massive matrix Operations

In this paper, we introduce limited-sharing multi party computation; in which there is a network of workers (processors) and also a set of input nodes that have access to some massive matrices as private inputs. These input nodes aim to offload computation of a polynomial function of the matrices to ...