A High Efficiency 3.6-4.0 GHz Envelope-Tracking Power Amplifier Using GaN Soft-Switching Buck-Converter

  • Asbeck P.
  • Kolmonen T.
  • Komatsuzaki Y.
  • Lanfranco S.
  • Ma R.
  • Piirainen O.
  • Sakata S.
  • Shinjo S.
  • Tanskanen J.
  • Yamanaka K.

We report a high efficiency sub-6GHz wideband Envelope-Tracking Power Amplifier (ET-PA) including a soft-switching buck-converter and a wideband RF-PA, used in conjunction with a digital front end (DFE) environment for signal generation and predistortion. Both buck-converter and RF-P A were fabricated using an 0.15um GaN HEMT process. The DFE can ...

An Analog Wide-Bandwidth Baseband Chain for 12Gbps 256QAM Direct-Conversion Receiver

  • Baeyens Y.
  • Jalali-Farahani B.
  • Moretto M.
  • Shahramian S.
  • Singh A.

This paper presents a broadband low-power baseband designed for zero-IF phased-array receiver. It can support 12 Gbps 256QAM and 17Gbps 32QAM. Baseband circuit provides filtering for RF channel bandwidths of 1.4Ghz to 6Ghz in 16 different steps. It incorporates variable-gain-amplifiers with total tuning range of 40 dB. DC offsets up ...

Compact 28-GHz phased array antenna for 5G access

  • Valkonen R.

Requirements of upcoming 5G millimeter-wave communications, such as high antenna gain and beamforming agility, are addressed by designing, manufacturing and measuring a compact and scalable phased array antenna for 28-GHz access network. The antenna is based on a multi-layer printed circuit board (PCB) with 64 radiating elements and 16 commercial ...

Pushing Inkjet Printing to W-band: An all-printed 90-GHz beamforming array

  • Baeyens Y.
  • Kimionis I.
  • Shahramian S.
  • Singh A.
  • Tentzeris M.

In this work, the inkjet printing process is refined to push the capabilities of additive manufacturing up to the W-band (75-110 GHz). The idiosyncrasies of inkjet printing on polymer dielectric materials are fully taken into account, to mitigate the effect of excessive ink spreading which results in RF circuit detuning ...

Network Intrusion Detection Using Flow Statistics

  • Atli B.
  • Jung A.
  • Miche Y.

The increasing use of network data within every aspect of human life, ranging from genetic databases to credit card payments, urges for efficient methods for detecting any attempts (intrusions) to compromise sensitive information. The problem of detecting such network intrusions is challenging, since the regular or normal network patterns are ...

On Selected V2X Technology Components and Enablers from the 5GCAR Project

  • Abbas T.
  • Alli S.
  • Alonso-Zarate J.
  • Dillinger M.
  • Fallgran M.
  • Fodor G.
  • Li Z.
  • Mahmoodi T.
  • Svensson T.
  • Vivier G

Cooperative intelligent transport systems (ITS) and connected vehicles are foreseen to change the way mobility is conceived today. Cooperative and connected vehicles will lead to improved road traffic safety and efficiency and will also trigger innovation in the infotainment area. These will foster the design of disruptive new business models ...

Dynamic Multipath Connection for Low-Latency Vehicle- to-Everything (V2X) Communications

  • Barco R.
  • De-La-Bandera I.
  • Khatib E.
  • Kovacs I.
  • Palacios D.
  • Soret B.

The fifth generation (5G) of cellular communications aims at encompassing a wide variety of types of communications, among which are vehicle-to-everything (V2X) communications. These will be characterized by the interchange of both low-latency messages for control and notification purposes, and delay-tolerant messages, devoted to infotainment services. In this paper, a ...

On Coding for Cache-Aided Delivery of Dynamic Correlated Content

  • Erkip E.
  • Hassanzadeh P.
  • Llorca J.
  • Tulino A.

IEEE Cache-aided coded multicast leverages side information at wireless edge caches to efficiently serve multiple unicast demands via common multicast transmissions, leading to load reductions that are proportional to the aggregate cache size. However, the increasingly dynamic, unpredictable, and personalized nature of the content that users consume challenges the efficiency ...

The Density of Millimeter Wave Access Points in Dense Urban Areas and its Effect On Link Availability in the Presence of Blocking

  • Ewe L.
  • Halbauer H.

Radio access networks of the next generation (5G) are designed to be capable to handle the increasing demand for bandwidth and low latency as required for services like enhanced Mobile Broadband (eMBB), augmented reality or applications of the "tactile internet", that cannot be provided satisfactorily by today's radio access technologies. ...

Enhancements for Enabling Point-to-Multipoint Communication Using Unlicensed Spectrum

  • Li Zexian
  • Lundèn P.
  • Prasad A.
  • Uusitalo M.

Exponential increase in data rate demand has lead to the periodic upgrade of mobile network infrastructure, with a new generation of wireless access technology being developed every decade. Currently, the fifth generation (5G) of mobile networks - supporting higher data rates and reliability, with lower latency are being developed and ...

Anomaly-Based Intrusion Detection Using Extreme Learning Machine and Aggregation of Network Traffic Statistics in Probability Space

  • Amaury Lendasse
  • Atli B.
  • Buse Atli
  • Holtmanns S.
  • Kalliola A.
  • Lendasse A.
  • Miche Y.
  • Oliver I.

Recently, with the increased use of network communication, the risk of compromising the information has grown immensely. Intrusions have become more sophisticated and few methods can achieve efficient results while the network behavior constantly changes. This paper proposes an intrusion detection system based on modeling distributions of network statistics and ...

Minimizing the impact of prediction errors during anticipatory resource allocation

  • Malanchini I.
  • Suryaprakash V.

By predicting changes in service requirements and future evolution of network states, anticipatory networking aims at improving the performance of decision making and optimization algorithms. In this paper, we propose a reliability-aware scheduling model which exploits information of upcoming users' channel states to proactively optimize the resource allocation. Along with ...

On the MIMO Capacity with Multiple Linear Transmit Covariance Constraints

  • Claussen H.
  • Farrell R.
  • Flanagan M.
  • Pham T.
  • Tran L.

This paper presents an efficient approach to computing the capacity of multiple-input multiple-output (MIMO) channels under multiple linear transmit covariance constraints (LTCCs). LTCCs are general enough to include several special types of power constraints as special cases such as the sum power constraint (SPC), per-antenna power constraint (PAPC), or a ...

Pilot Allocation for Interference Coordination inTwo-tier Massive MIMO Heterogeneous Network

  • Gacanin H.
  • H. Furukawa
  • Hao W.
  • Muta O.
  • O. Muta
  • W. Hao

In this paper, we investigate pilot allocation problem in two-tier time division duplex (TDD) heterogeneous network (HetNet) with mMIMO. First, we propose a new pilot allocation scheme to maximize ergodic downlink sum rate of macro users (MUs) and small cell users (SUs), where the uplink pilot overhead and cross-tier interference ...

Energy Efficiency of Massive MIMO: Cell-Free vs Cellular

  • Marzetta T.
  • Yang H.

Cell-free Massive MIMO (Multiple Input Multiple Output) employs a large number of AP's (Access Points) that are distributed throughout the intended coverage area to simultaneously serve a much smaller number of user AT's (Access Terminals). Conjugate beamforming is the simplest precoding method for the downlink transmission, and allows decentralized precoding ...

Distributed Power Allocation for the Downlink of a Two-Cell MISO-NOMA System

  • Chen C.
  • Fu Y.
  • Lou Salaün
  • Sung C.

In this paper, we investigate the distributed power allocation algorithm for the downlink of a two-cell multiple input and single output non- orthogonal multiple access (MISO-NOMA) system. The problem targets at minimizing the total power consumption of the base stations (BSs) while taking into consideration each user's data rate requirement. ...

Optimization of Impulsive Noise Mitigation Scheme for PAPR Reduced OFDM Signals over Powerline Channels

  • Adebisi B.
  • Anoh K.
  • Gacanin H.
  • Rabie K.

The IEEE 1901 powerline standard can be deployed using orthogonal frequency division multiplexing (OFDM) since it is robust over impulsive channels. However, the powerline channel picks up impulsive interference that the conventional OFDM driver cannot combat. Since the probability density function (PDF) of OFDM amplitudes follow the Rayleigh distribution, it ...

Distributed Downlink Power Control for the MISO-NOMA System with Two Interfering Cells

  • Chen C.
  • Chi Wan Sung
  • Salaun L.
  • Yaru Fu

This paper investigates the power control problem for the downlink of a multiple-input single-output non-orthogonal multiple access (MISO-NOMA) system with two interfering cells. The problem aims at minimizing the total power of the base stations (BS) subject to the data rate requirements of the users. A distributed power control algorithm ...

Extreme Learning Machines for VISualization+R: Mastering Visualization with Target Variables

  • Akusok A.
  • Baek S.
  • Gritsenko A.
  • Lendasse A.
  • Miche Y.

© 2017, Springer Science+Business Media, LLC, part of Springer Nature. The current paper presents an improvement of the Extreme Learning Machines for VISualization (ELMVIS+) nonlinear dimensionality reduction method. In this improved method, called ELMVIS+R, it is proposed to apply the originally unsupervised ELMVIS+ method for the regression problems, using target ...

Corrections to: Smoothed online resource allocation in multi-tier distributed cloud networks (IEEE/ACM Transactions on Networking (2017) 25: 4 (2556-2570) DOI: 10.1109/TNET.2017.2707142)

  • Jiao L.
  • Jin Y.
  • Llorca J.
  • Sala A.
  • Tulino A.

© 1993-2012 IEEE. In [1], there are two symbol typos in equations. In (1b), the ' ? t, ? t ' should be ' ? i, ? t '. In (1d), the ' ? t, ? t ' should be ' ? j, ? t '. IEEE regrets the error.