Energy-Efficient Multicell Multigroup Multicasting with Joint Beamforming and Antenna Selection

© 1991-2012 IEEE. This paper studies the energy efficiency and sum rate tradeoff for coordinated beamforming in multicell multiuser multigroup multicast multiple-input single-output systems. We first consider a conventional network energy efficiency maximization (EEmax) problem by jointly optimizing the transmit beamformers and antennas selected to be used in transmission. We ...

Of Kernels and Queues: when network calculus meets analytic combinatorics

  • Bouillard A.
  • Comte C.
  • De Panafieu E.
  • Mathieu F.

Stochastic network calculus is a tool for computing error bounds on the performance of queueing systems. However, deriving accurate bounds for networks consisting of several queues or subject to non-independent traffic inputs is challenging. In this paper, we investigate the relevance of the tools from analytic combinatorics, especially the kernel ...

Fiber-optic transmission and networking: the previous 20 and the next 20 years

Celebrating the 20th anniversary of Optics Express, this paper reviews the evolution of optical fiber communication systems, and through a look at the previous 20 years attempts to extrapolate fiber-optic technology needs and potential solution paths over the coming 20 years. Well aware that 20-year extrapolations are inherently associated with ...

Zero-Power Sensors for Smart Objects: Novel Zero-Power Additively Manufactured Wireless Sensor Modules for IoT Applications

Wireless sensors are pervasive today for applications spanning environmental sensing, safety, health, structural integrity, smart homes, and smart cities. Implementations of wireless sensor networks and Internet of Things (IoT) systems have typically relied on power supplied by batteries, which have a limited lifetime and pose the increased burden on users ...

Galerkin-Legendre spectral schemes for nonlinear space fractional Schrödinger equation

  • Fan W.
  • Jiang X.
  • Wang C.
  • Zhang H.

© 2017, Springer Science+Business Media, LLC, part of Springer Nature. In the paper, we first propose a Crank-Nicolson Galerkin-Legendre (CN-GL) spectral scheme for the one-dimensional nonlinear space fractional Schrödinger equation. Convergence with spectral accuracy is proved for the spectral approximation. Further, a Crank-Nicolson ADI Galerkin-Legendre spectral method for the two-dimensional ...

Introduction to the Special Section on the 2017 IEEE BCTM and IEEE CSICS Conferences

This Special Section of the IEEE Journal of Solid-State Circuits Features expanded versions of key invited papers that were presented at the 2017 IEEE Bipolar and BiCMOS Circuits and Technology Meeting (BCTM), held at Miami Marriott Biscayne Bay, Miami, FL, USA, on October 19–21, 2017, and the 2017 IEEE Compound ...

A MC-CDMA system based on orthogonal filter banks of wavelet transforms and partial combining

© 2018 Elsevier GmbH Multi Carrier Code Division Multiple Access (MC-CDMA) is an appropriate modulation technique for high data rates. In this modulation scheme, employing of combining techniques are unavoidable for restoring orthogonality between different user signals. In this paper, the combining techniques of a MC-CDMA based on wavelet transform ...

Temporal Filter Parameters for Motion Pattern Maps

  • O'Gorman L.

There are many video analysis applications in which the flow of people or traffic over time is of more interest than tracking the discrete objects contained. Motion pattern maps, loosely called heat maps, can show accumulated activity over time via temporal filtering. In this paper, we examine three parameters that ...

vNS: a modular programmable virtual network switch

  • Gallo M.
  • Pianese F.

Virtual software switches are evolving: from simple communication facilities connecting virtual machines to the outside network, they are growing into complex subsystems supporting an increasing number of functionalities at multiple network layers. In line with recent trends introducing stateless and stateful processing in virtual switches, we present in this poster ...

NOKIA Bell Labs & ION demonstrate ODTN phase 1.0 at Telefónica Lab

  • Atkinson G.
  • Pham Van Q.
  • Tancevski L.
  • Thottan M.
  • Verchere D.

NOKIA Bell Labs and ION realized and demonstrated with Telefónica at Telefonica Lab ODTN project phase 1.0 realization involving the configuration and control of NOKIA transponders with the capabilities of OpenConfig/NETCONF agent and with ONOS Controller integrating NOKIA device NETCONF drivers at its South Bound Interface and Transport API (TAPI) ...

Effect of mutual coupling between feed elements on integrated lens antenna performance

An integrated lens antenna (ILA) equipped with a beam-switching array feed provides beam-steering. This study investigates the effects of the mutual coupling between the feed array elements on the ILA performance. A simulation study of an ILA with two different feed types with varying mutual coupling levels is done. Radiation ...

End-to-end Deep Learning of Optical Fiber Communications

  • Buelow H.
  • Chagnon M.
  • Domanic Lavery
  • Felix Thouin
  • Karanov B.
  • Polina Bayvel
  • Schmalen L.
  • Tobias A. Eriksson

We implement the optical fiber communication system as an end-to-end deep neural network, which includes the complete chain of transmitter, receiver and channel. This approach allows transceiver functions to be optimized in a single end-to-end process. Our work shows that such a deep learning fiber-optic system can achieve reliable communication ...

Field Measurement for Antenna Configuration Comparison in Challenging NLOS Locations

IEEE This paper has two main objectives. First, it describes the practical challenges of field trials and proposes a developed test method. Second, the test method is used to compare the uplink (UL) performance with different antenna technologies when user equipment (UE) does not have a line of sight (LOS) ...

Spectrum Allocation with Flexible Frame Structure

This paper explores the potential of allocating spectrum resource under flexible frame structure for accommodating services with different types of requirements. Computational complexity is rigorously analyzed. A scalable algorithm is proposed based on searching in both primal space and dual space, which are shown to be complementary to each other ...

Phase-sensitive amplifier link with distributed Raman amplification

© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement We demonstrate long-haul transmission using a hybrid amplifier approach combining distributed Raman amplification and lumped phase-sensitive amplification. Aside from the well-known resulting SNR improvement, distributed Raman amplification is included in an effort to improve ...

Effect of Backhaul Constraints on Uplink Femtocell Networks

IEEE One promising approach to expand the coverage and enhance the performance of cellular networks is to employ multi-tier cellular networks. In this paper, an uplink two-tier communication network is studied, in which macro users, femto users and femto access points are geometrically located inside the coverage area of a ...

Forced convection in the wakes of impacting and sliding bubbles

Both vapour and gas bubbles are known to significantly increase heat transfer rates between a heated surface and the surrounding fluid, even with no phase change. The cooling structures observed are highly temporal, intricate and complex, with a full description of the surface cooling phenomena not yet available. The current ...

Preface to the Special Issue on Data Center Communications

  • Earnshaw M.
  • Li M.
  • Petropoulos P.
  • Vusirikala V.

Fast flow volume estimation

The increasing popularity of jumbo frames means growing variance in the size of packets transmitted in modern networks. Consequently, network monitoring tools must maintain explicit traffic volume statistics rather than settle for packet counting as before. We present constant time algorithms for volume estimations in streams and sliding windows, which ...