DEEP TRAPS ANALYSIS IN ALGAN/GAN HETEROSTRUCTURE TRANSISTORS

  • Aubry R.

AlGaN/GaN high electron mobility transistors are investigated by DLTS measurements. 6 different are extracted with the following activation energies: 0.12 eV, 0.15 eV, 0.21 eV, 0.42 eV, 0.49 eV and 0.94 eV. Based on comparison with literature results and measurements as a function of the pulse reverse bias, the trap ...

A SURVEY OF URBAN VEHICULAR SENSING PLATFORMS

  • Lee U.

Vehicular sensing where vehicles on the road continuously gather, process, and share location-relevant sensor data (e.g., road condition, traffic flow) is emerging as a new network paradigm for sensor information sharing in urban environments. Recently, smartphones have also received a lot of attention for their potential as portable vehicular urban ...

ON THE CONVEXITY OF NEWSVENDOR GAMES

  • Ozen U.

This study considers a simple newsvendor situation that consists of n retailers, all selling the same item with common purchasing costs and common selling prices. Groups of retailers might increase their expected joint profit by inventory centralization, which means that they make a joint order to satisfy total future demand. ...

CMOS SILICON RECEIVER INTEGRATED WITH GE DETECTOR AND RECONFIGURABLE OPTICAL FILTER

  • Bolle C.
  • Chen Y.
  • Doerr C.
  • Earnshaw M.
  • Gill D.
  • Rasras M.
  • Weiner J.

We demonstrate a complimentary metal-oxide-semiconductor (CMOS)-compatible and widely tunable filter with an integrated germanium detector. The filter uses two stages of sixth-order pole-zero filtering cascaded in a vernier fashion to achieve simultaneous tunability and adjustable passband bandwidth from 25 to 50 GHz tuned over a wavelength range >12 nm. The ...

ON FEMTO DEPLOYMENT ARCHITECTURES AND MACROCELL OFFLOADING BENEFITS IN JOINT MACRO-FEMTO DEPLOYMENTS

  • Calin D.
  • Claussen H.
  • Uzunalioglu H.

This article provides an overview of opportunities and challenges related to joint deployments of macro and femtocells. It provides insights on possible deployment architectures for femtocells along with an analysis framework for quantifying macro offloading benefits in realistic network deployment scenarios by means of advanced performance analysis techniques. Such benefits ...

CONSTRUCTION OF MAXIMUM RUN-LENGTH LIMITED CODES USING SEQUENCE REPLACEMENT TECHNIQUES

  • Immink K.
  • Van Vijngaarden A.J

The sequence replacement technique converts an input sequence into a constrained sequence in which a prescribed subsequence is forbidden to occur. Several coding algorithms are presented that use this technique for the construction of maximum run-length limited sequences. The proposed algorithms show how all forbidden subsequences can be successively or ...

DIFFERENTIAL DISTRIBUTED AMPLIFIER WITH 2:1 SELECTOR IN INP DHBT FOR 100 GBIT/S OPERATION

  • Berdaguer P.
  • Dupuy J.
  • Godin J.
  • Jorge F.
  • Konczykowska A.
  • Moulu J.
  • Riet M.

A differential distributed amplifier integrated with a 2:1 selector has been designed and fabricated in a 0.7 ¿m InP double hetero-junction bipolar transistor (DHBT) technology. Measurements were performed at 86 and 100 Gbit/s, showing clear output eye opening and a voltage swing of 2 � 2.3 V. The circuit is ...

HIGH GAIN (30 DB) AND HIGH SATURATION POWER (11 DBM) RSOA DEVICES AS COLORLESS ONU SOURCES IN LONG-REACH HYBRID WDM/TDM-PON ARCHITECTURE

  • Brenot R.
  • Duan G.
  • Lamponi M.
  • Make D.

We propose a hybrid wavelength-division-multiplexing/time-division-multiplexing architecture using reflective semiconductor optical amplifiers (RSOAs) for next-generation access solutions. We demonstrate that the use of a high gain and high output power RSOA as remote modulator enables a 36-dB optical budget for colorless operation at 2.5 Gb/s over 45-km single-mode fiber. This RSOA-based ...

LIGHT UP OPTICAL FIBER TO SUPPORT BUSINESS CRITICAL COMMUNICATIONS

  • Tassara F.

How the business case for an owned telecom network meets the expectations of a private market.

PROBING COLLECTIVE MODES OF CORRELATED STATES OF FEW ELECTRONS IN SEMICONDUCTOR QUANTUM DOTS

  • Pfeiffer L.
  • West K.

Low-lying collective excitations above highly correlated ground states of few interacting electrons confined in GaAs semiconductor quantum dots are probed by resonant inelastic light scattering. We highlight that separate studies of the changes in the spin and charge degrees of freedom offer unique access to the fundamental interactions. The case ...

ON THE DETECTION OF SIGNALING DOS ATTACKS ON 3G/WIMAX WIRELESS NETWORKS

  • Bu T.
  • Woo T.

Third generation (3G) wireless networks based on the CDMA2000 and UMTS standards are now increasingly being deployed throughout the world. Because of their complex signaling and relatively limited bandwidth, these 3G networks are generally more vulnerable than their wireline counterparts, thus making them fertile ground for new attacks. In this ...

AN AUTONOMIC ARCHITECTURE FOR OPTIMIZING QOE IN MULTIMEDIA ACCESS NETWORKS

  • Gilon De Lumley E
  • Van Den Berghe S

The recent emergence of multimedia services, such as Broadcast TV and Video on Demand over traditional twisted pair access networks, has complicated the network management in order to guarantee a decent Quality of Experience (QoE) for each user. The huge amount of services and the wide variety of service specifics ...

A GENERAL FRAMEWORK FOR COOPERATION UNDER UNCERTAINTY

  • Ozen U.

In this paper, we introduce a general framework for situations with decision making under uncertainty and cooperation possibilities. This framework is based upon a two stage stochastic programming approach. We show that under relatively mild assumptions the associated cooperative games are totally balanced. Finally, we consider several example situations.

SUBSTRATE EMITTING INDEX COUPLED QUANTUM CASCADE LASERS USING BIPERIODIC TOP METAL GRATING

  • Carras M.
  • Marcadet X.
  • Parillaud O.

We report on the design and experimental demonstration of a specific metal grating profile that enables a substrate emission of a quantum cascade laser. A low loss, index coupled, and horizontal cavity surface emitting laser (HCSEL) design is proposed, which is very robust against technological spreads. The detailed analysis of ...

THE FAILURE MECHANISMS OF MICRO-SCALE CANTILEVERS UNDER SHOCK AND VIBRATION STIMULI

  • Goyal S.

Recent advances in micro-electro-mechanical system (MEMS) fabrication technology have resulted in proliferation of micro-scale mechanical devices, some of which are applied in environments with severe levels of shock. The objective of this paper was to investigate the use of experimental and numerical methods in quantifying the behaviour of representative MEMS ...

DEVELOPED AND EMERGING MARKETS READYING FOR LTE

  • Gallagher-Carpenter D.
  • Power J

Le marché du LTE devrait se développer plus vite que celui de toute autre norme mobile à ce jour La perspective de connaître une expérience plus riche explique principalement l’intérêt pour le LTE De manière générale, les particuliers et les entreprises sont prêts à profiter des avantages du LTE

6 KEY TRENDS DRIVING THE EVOLUTION TO LTE

  • Chan M.

Mobile demand is increasing - 6 key trends to watch that will further drive demand LTE can enable sustainable and profitable business models LTE subscriptions worldwide projected to grow at a CAGR of over 400% from 2010 - 2014

GENERALIZED SHARING IN SURVIVABLE OPTICAL NETWORKS

  • Ali M.

Shared path protection has been demonstrated to be a very efficient survivability scheme for optical networking. In this scheme, multiple backup paths can share a given optical channel if their corresponding primary routes are not expected to fail simultaneously. The focus in this area has been the optimization of the ...

CAPACITY DEMAND AND TECHNOLOGY CHALLENGES FOR LIGHTWAVE SYSTEMS IN THE NEXT TWO DECADES

  • Desurvire E.

Ten to 20 years from now, optical networks will have to carry vastly increased amounts of Internet traffic. Today's knowledge (2006) already points to ultimate technology limits in the physical layer, foretelling the end of the so-called "Optical Moore's Law." Such an observation is discordant with the generic and optimistic ...

COMPETITIVE SCHEDULING FOR OFDMA SYSTEMS WITH GUARANTEED TRANSMISSION RATE

  • Jiao W

Next-generation broadband wireless standards use orthogonal frequency division multiple access (OFDMA) as the preferred physical layer multiple access scheme, especially for the downlink. Due to limited resources available at the base station, multi-user resource allocation is crucial for delivering the applications with various quality-of-service (QoS) demands. We study the OFDMA ...