Adaptive Step-size Iterative Algorithm for Sparse Signal Recovery

  • Yuan X.

We develop the variational Bayesian plus Euclidean projection (VB-EP) algorithm for sparse signal recovery from compressed measurements. This algorithm is formulated as an iteratively alternating projection strategy. The first step projects the measurements/residuals to the signal level, which is implemented via a Bayesian model; the second step projects the results ...

User level performance analysis of multi-hop in-band backhaul for 5G

  • Drozdy A.
  • Kapanen J.
  • Manner J.

In recent years, mobile access networks operating at millimeter wavelengths have received a great deal of attention, as they promise previously unattainably high mobile data rates. At these frequencies, mobile access links are expected to use highly directional beamforming antennas, which are also well suited to backhaul links. Therefore, access ...

Energy Saving via Efficient Allocation of Paging Frames

  • Awada A.
  • Michalopoulos D.

We propose an alternative design for paging in next generation networks, and investigate its potential for increasing the energy efficiency of base stations. The proposed design allocates the paging frames in certain radio frames, aiming at providing longer sleep opportunities to the base stations. This allows more hardware components to ...

Non-convex weighted ?<inf>p</inf>nuclear norm based ADMM framework for image restoration

  • Liu X.
  • Tang L.
  • Wang Q.
  • Wu Y.
  • Yuan X.
  • Zha Z.
  • Zhang X.

© 2018 Inspired by the fact that the matrix formed by nonlocal similar patches in a natural image is of low rank, the nuclear norm minimization (NNM) has been widely used in various image processing studies. Nonetheless, nuclear norm based convex surrogate of the rank function usually over-shrinks the rank ...

ApproxJoin: Approximate Distributed Multi-way Joins

  • Akkus I.
  • Bhatotia P.
  • Blanas S.
  • Chen R.
  • Fetzer C.
  • Le Quoc D.
  • Strufe T.

The join operation is a fundamental building block of parallel data processing. Unfortunately, it is very resource-intensive to compute an equi-join across massive datasets. The approximate computing paradigm allows users to trade accuracy and latency for expensive data processing operations. The equi-join operator is thus a natural candidate for optimization ...

Integrated lithium niobate electro-optic modulators operating at CMOS-compatible voltages

  • Bertrand M.
  • Chandrasekhar S.
  • Chen X.
  • Lon?Ar M.
  • Shams-Ansari A.
  • Wang C.
  • Winzer P.
  • Zhang M.

Electro-optic modulators translate high-speed electronic signals into the optical domain and are critical components in modern telecommunication networks1,2and microwave-photonic systems3,4. They are also expected to be building blocks for emerging applications such as quantum photonics5,6and non-reciprocal optics7,8. All of these applications require chip-scale electro-optic modulators that operate at voltages compatible ...

RConf(PD): Automated resource configuration of complex services in the cloud

  • Aroca J.
  • Fu X.
  • Hilt V.
  • Iglesias J.
  • Koll D.
  • Prasad A.

Optimal deployment of complex services in a virtualized environment is still an open problem. These services typically consist of a set of connected components, and each component may consist of multiple instances. Each instance can in turn be run in different virtual flavors, while the service constructed by the combination ...

Demonstration of an Erbium-Doped Fiber with Annular Doping for Low Gain Compression in Cladding-Pumped Amplifiers

  • Chen H.
  • Essiambre R.
  • Fontaine N.
  • Jin C.
  • Kelly C.
  • Larochelle S.
  • Matte-Breton C.
  • Messaddeq Y.
  • Ryf R.

We present the design and characterization of a cladding-pumped amplifier with erbium doping located in an annular region near the core. This erbium-doped fiber is proposed to reduce gain saturation, leading to smaller gain compression when compared to uniform core doping. Through numerical simulations, we first compare the performance of ...

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

  • Chatzinotas S.
  • Juntti M.
  • Ottersten B.
  • Pennanen H.
  • Tervo O.
  • Tran L.

© 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 ...

High Capacity Transmission with Few-Mode Fibers

  • Agrell E.
  • Aikawa K.
  • Awaji Y.
  • Eriksson T.
  • Furukawa H.
  • Luis R.
  • Maruyama R.
  • Puttnam B.
  • Rademacher G.
  • Ryf R.
  • Wada N.

IEEE We experimentally investigate high-capacity fewmode fiber transmission for short and medium-haul optical links. In separate experiments, we demonstrate C + L band transmission of 283 Tbit/s over a single 30 km span and recirculating loop transmission of 159 Tbit/s over 1045 km graded-index three mode fiber. The first experiment ...

Automated iBeacon-Based Community Detection: Data-Driven Approach to Recover Face-to-Face Interaction from Noisy & Incomplete Sensor Data

  • Akyamac A.
  • Lee J.
  • Phadke C.
  • Uzunalioglu H.

In this paper, we address the detection of face-to-face (f2f, i.e., physical) interactions between people from noisy sensor data and determination of groups and communities that individuals form in the physical world. The sensor data may include, for example, received signal strength indicator (RSSI) information based on iBeacon, Wi-Fi, Zigbee ...

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 ...

A Simplified Dielectric Material Characterization Algorithm for Both Liquids and Solids

  • Bao J.
  • Bao X.
  • Kil D.
  • Liu S.
  • Liu Z.
  • Nauwelaers B.
  • Ocket I.
  • Puers R.
  • Schreurs D.
  • Zhang M.

IEEE A simplified dielectric material characterization technique that combines an equivalent impedance algorithm and a general “line–line” trace method is introduced. The technique is applicable to every type of transmission lines. Due to the convenient fabrication and the allowance of integration with various polymers, coplanar waveguide transmission lines integrated with ...

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

  • Chraplyvy A.
  • Neilson D.
  • Winzer P.

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

  • Bito J.
  • He X.
  • Hester J.
  • Kimionis J.
  • Lin T.
  • Su W.
  • Tentzeris M.

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 ...

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

  • Ahmadi M.
  • Alirezaee S.
  • Heydari R.
  • Shahbaztabar D.

© 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 ...

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

  • Shahramian S.
  • Wang H.

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 ...

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 ...