Estimation of the conditional distribution of an optical nonlinear channel with memory using deep neural networks

  • Estaran Tolosa J.
  • Renaudier J.
  • Rios Muller R.

We demonstrate that deep neural networks can be used to approximate the conditional distribution of a non-linear channel with memory. This distribution is then used in the BCJR algorithm to infer the unknown transmitted data. This procedure is validated experimentally in a IM/DD 3.2 km long transmission of 64 GBd ...

5G Hype and Realities

  • Garyantes M.

5G is touted as the next great thing in wireless communications, coming your way any day now. This talk will discuss the likely 5G use cases (and which ones are unlikely) and the challenges and opportunities afforded. With new frequency bands come new challenges, and conventional base station architectures need ...

A Framework for Security on Demand

  • Hu Z.
  • Yan X.
  • Yin E.

This paper is to design a framework that enables to create customized security chain using SFC to provide security services dynamically and adaptively for different applications. In this way, security on demand could be achieved. Moreover, two use cases are given to show how to create security chain and corresponding ...

DNA-GA: A New Performance Analysis Tool for the Uplink Cellular Networks

  • Guoqiang Mao
  • Lopez-Perez D.
  • Ming Ding
  • Zihuai Lin

In this paper, we propose a new approach of network performance analysis for the uplink (UL) of cellular networks, which is based on deterministic network analysis using Gaussian approximation (DNA-GA). First, we present the DNA-GA analysis to investigate the UL signal-to-interference ratio (SIR) performance. Second, we introduce two approaches for ...

Performance Impact of Base Station Antenna Heights in Dense Cellular Networks

  • Lopez-Perez D.
  • Ming Ding

In this paper, we present a new and significant theoretical discovery. If the absolute height difference between base station (BS) antenna and user equipment (UE) antenna is larger than zero, then the network performance in terms of both the coverage probability and the area spectral efficiency (ASE) will continuously decrease ...

mmWave Relayed Backhaul for Very High User Rate Delivery

  • Du J.
  • Onaran E.

Relay aided backhaul has been proposed to meet the challenge of providing Gbps high user rate over long distance (~1 km) in millimeterWave. The problem of backhaul topology design and optimal bandwidth-power partitioning has been formulated as a constrained optimization problem to minimize the bandwidth consumption for given user rate ...

5G Access Slices with Native TCP

  • Francini A.
  • Joseph Beshay
  • Kucera S.
  • Ravi Prakash
  • Sharma S.

The 5G system integrates a variety of disruptive innovations in wireless access: new air interfaces, split link architectures that separate base-band processing and radio heads, virtualization of functions in general-purpose processors, and flexible chaining of virtualized functions in network slices tailored to the specific needs of diverse services. Besides new ...

SRAudit: Auditing the Structural Reliability of the Clouds to Ward Off Correlated Failures

  • Chen R.
  • Ennan Zhai
  • Ruzica Piskac

Cloud computing systems heavily rely on redundancy techniques for ensuring reliability. Nevertheless, as cloud systems become ever more structurally complex, infrastructure components, e.g., replica servers, may unwittingly share deep dependencies, such as aggregation switches. These unexpected common dependencies may result in correlated failures that undermine redundancy efforts. Although existing diagnosis ...

Towards Reliable Application Deployment in the Cloud

  • Akkus I.
  • Chen R.
  • Hilt V.
  • Rimac I.
  • Viswanath B.

Applications are moving from self-maintained infrastructure to the cloud. A common practice to increase the reliability of a cloud application is to deploy redundant instances. Unfortunately, such redundancy efforts can be undermined if the application's instances share common dependencies. This paper presents reCloud, a novel system which can efficiently find ...

Long distance transmission over coupled-core multicore fiber

  • Amezcua-Correa R.
  • Carlos Alvardo J.
  • Chang S.
  • Chen H.
  • Essiambre R.
  • Fontaine N.
  • Hayashi T.
  • Huang B.
  • Ryf R.

We demonstrate combined wavelength- and space-multiplexed long distance transmission over a coupled-core fiber with 4 cores. The fiber shows a very small impulse response spread, achieves better performance than a comparable single mode fiber, while providing 4 times the capacity.

A 62Tb/s Transoceanic Transmission Experiment Using Probabilistically-Shaped PDM-64QAM

  • Buchali F.
  • Carbo Meseguer A.
  • Charlet G.
  • Fernandez De Jauregui Ruiz I.
  • Ghazisaeidi A.
  • Hu Q.
  • Renaudier J.
  • Rios Muller R.
  • Schmalen L.
  • Tran P.

We report on a C+L-band transmission of 62 Tb/s over 6600km using 49 GBd probabilistically-shaped 64QAM (PS64QAM) modulation format, digital-back propagation based nonlinear compensation, and adaptive-rate spatially-coupled LDPC decoding. We compare the performance of PS64QAM with that of 32QAM.

Low-Cost Superimposed Pilots Based Receiver for Massive MIMO in Multicarrier System

  • Chen Y.

In this paper, we present a low-cost receive algorithm for massive Multiple-Input Multiple-Output (MIMO) system, which exploits 2-dimensional superimposed pilots in time and frequency domain. By introducing the well designed superimposed pilots, the pilot contamination can be systematically suppressed. Even within a small time-frequency allocation, transforming the 2-dimensional superimposed pilots ...

Taxonomy-based Supervised Topic Labeling

  • Ajwani D.
  • Nicholson P.
  • Sala A.
  • Taneva-Popova B.

The rise of AI assisted applications, bots-based customer support and personal assistants is imposing higher and higher accuracy requirements in interpreting and contextualizing text data. A fundamental building block in automated understanding of text is to assign a topic label to a text document, at an appropriate level of granularity. ...

Grammatical Genetic Programming for Scheduling in Realistic Heterogeneous Communications Networks

  • Claussen H.
  • David Lynch
  • Kucera S.
  • Michael Fenton
  • Michael O’Neill

Grammatical Genetic Programming is used to evolve Small Cell schedulers on a realistic simulation of a 3GPP 4GLTE heterogeneous cellular network. Extensive analysis of the solution and its performance across a wide range of metrics reveals evolution has uncovered a new human-competitive Small Cell scheduling technique which generalises well across ...

Low-Latency Communication in LTE and WiFi using Spatial Diversity and Encoding Redundancy

  • Kucera S.
  • Yasuo Tan
  • Yu Yu
  • Yuto Lim

In mobile and wireless networks, controlling data delivery latency is one of open problem due to the stochastic nature of wireless channels which are inherently unreliable. This paper open an opportunity to explores how the current best-effort throughput-oriented wireless services could be evolved into latency-sensitive enablers of new mobile applications ...

Ensemble Techniques for Scheduling in Heterogeneous Wireless CommunicationscNetworks

  • Claussen H.
  • David Lynch
  • Kucera S.
  • Michael Fenton
  • Michael O’Neill

Operators can increase the capacity of their wireless networks by installing Small Cells in high traffic regions. However, User Equipments (UEs) at the edges of Small Cells suffer severe interference from neighbouring high-powered Macro Cells. It is desirable to tradeoff the rates of cell-centre UEs, so that cell-edge UEs do ...

Accurate Event Distribution Monitoring for Very Large Wireless Systems

  • Bejerano Y.
  • Raman C.
  • Yu C.

In a network of large number of devices, we address the problem of estimation of the probability distribution of quantities measured by the set of nodes in a geographical area. Queries are sent to the nodes by the network with the reporting condition and reporting probability. Nodes that satisfy the ...

Study of subband multiplexing at 54 GHz modulation bandwidth for 16QAM and probabilistic shaped 64QAM

  • Buchali F.
  • Eriksson T.
  • Fabian Steiner
  • Georg Boecherer
  • Idler W.
  • Patrick Schulte
  • Schmalen L.
  • Schuh K.

We assessed the electriacal subband multiplexed 16QAM and PS-64QAM signals at 54 GHz modulation bandwidth. We showed a 14% and 9% reach gain versus a comparable single carrier system. A detailed subband analysis exhibits up to 40% gain versus single carrier while worse subcarriers suffer from limited system performance due ...

Probabilistic Shaped QAM for Reach and Spectral Efficiency Adaptation

  • Buchali F.
  • Idler W.
  • Schmalen L.

In this paper we review practical application of probabilistic shaping in long haul transmission systems.

Maximizing Bandwidth Allocation in Optical Ethernet

  • Gebhard U.

The IEEE 802.17 fairness protocol is adapted and enhanced for Optical Ethernet, a new connectionless transport-network architecture. The implementation is described and benchmarked by simulation.