Compact Multi-band Digital Predistortion for RFDAC-based Single-chain Multi-band RF Transmitter

  • Guan L.
  • Wang Z.

Compact multi-band RF transmitter solution will play a unique role in the forthcoming 4G-beyond and 5G wireless networks. The emerging RF class data convertor, i.e., RFDAC enables a promising single-chain multi-band RF transmitter solution. In order to combat the imperfections of practical nonlinear power amplifiers in the single-chain multi-band RF ...

TYPHOON: An SDN Enhanced Real-Time Big Data Streaming Framework

  • Chang H.
  • Cho J.
  • Lakshman T.
  • Mukherjee S.
  • Van Der Merwe J.

Current big data streaming frameworks focus mainly on the scalability of real-time stream data processing, and are not flexible enough for dynamic reconfiguration of applications to deal with changes in the distribution and volume of data. To address these problems, we propose an SDN-based realtime big data framework, called Typhoon. ...

Compressive Sensing vs. JPEG: An End-to-End Comparison

  • Haimi-Cohen R.
  • Yuan X.

We present an end-to-end image compression system based on compressive sensing by adding measurement quantization and entropy coding to the conventional scheme of compressive sampling and reconstruction. The compression performance, in terms of data rate versus image quality, is shown to be on par with JPEG and significantly better at ...

Pilot Contamination is Not a Fundamental Asymptotic Limitation in Massive MIMO

  • Bjornson E.
  • Hoydis J.
  • Sanguinetti L.

Massive MIMO provides great improvements in spectral efficiency, by coherent combining over a large antenna array and by spatial multiplexing of many users. Since its inception, the coherent interference caused by pilot contamination has been believed to be an impairment that does not vanish, even with an unlimited number of ...

AidOps: A Data-Driven Management of NFV configurations

  • Arjona Aroca J.
  • Jin Y.
  • Lugones D.

NFV is expected to transform the way telecom operators deploy and manage their networks and services. Yet, network functions are usually deployed on expensive and proprietary appliances that require expertise for deployment and maintenance. In this paper we argue that technological advances in NFV need an equivalent evolution on resource-management ...

Field Trial Transmission of 1.5 Tb/s Superchannel over 875 km, with 250 Gb/s Real-Time Subcarriers and EDFA Amplification

  • Augé Jean-Luc
  • Dabrowski S.
  • Houmed Ibrahim
  • Jakubowski Z.
  • Klimas A.
  • Konopka W.
  • Lavigne B.
  • Le Monnier M.
  • Pulka F.
  • Zami T.

This record field trial transmits 1.5 Tb/s superchannel with 5 b/s/Hz spectral efficiency over 875km of EDFA-amplified SMF, using six 250 Gb/s real time transponders featuring 1 dB minimum Q margin. All channels are 50 GHz spaced.

PA0011921

  • Haimi-Cohen R.
  • Yuan X.

Variational Bayesian and Euclidean Projection for Sparse Signal Recovery

Dynamic Monitoring of Very Large Wireless Systems

  • Bejerano Y.
  • Infante H.
  • Raman C.
  • Young T.
  • Yu C.

Recently we observe a wide-spread penetration of mobile devices which has been enlarged with the adoption of {em Internet-of-Things} (IoT) technologies. Consequently monitoring, configuring and sending queries to the large groups of wireless devices become a major challenge since current schemes require each device to be contacted individually. Addressing this ...

Extreme Speed Power-DAC: Leveraging InP DHBT for Ultimate Capacity Single-Carrier Optical Transmissions

  • Dupuy J.
  • Jorge F.
  • Konczykowska A.
  • Nodjiadjim V.
  • Riet M.

Power-DAC circuits for high capacity and high spectral efficiency optical transmitters are presented in this paper. They are based on a 0.7-µm InP DHBT semiconductor process, of which main differentiating characteristics are highlighted. We introduce the Power-DAC circuit concept, its usual architectures, and we provide design details of its latest ...

A Millimeter-Wave InP DHBT Multi-finger Modeling Approach Using Electromagnetic Simulation and Nonlinear Thermal Coupling Network

  • Dupuy J.
  • Johansen T.
  • Konczykowska A.
  • Midili V.
  • Nodjiadjim V.
  • Riet M.
  • Squartecchia M.
  • Zhurbenko V.

large-signal modeling approach has been developed for multi-finger devices fabricated in an Indium Phosphide (InP) Double Heterojunction Bipolar Transistor (DHBT) process. The approach utilizes single-finger device models embedded in a multi-port distributed network. The single-finger model is based on an improved UCSD HBT model formulation avoiding an erroneous RciCbci transit-time ...

Frequency Drift Mitigation for TWDM-PON Burst Mode Lasers

  • Barbet S.
  • Bonk R.
  • Borkowski R.
  • Brenot R.
  • Debregeas H.
  • Pfeiffer T.
  • Provost J.

For emerging TWDM-PON systems, based on burst-mode operation over WDM channels, a main challenge is the laser self-heating during bursts. This effect creates a drift of the emission frequency, leading to degraded transmission performances, and perturbation of adjacent channels. We explain an accurate method for characterization of wavelength drift during ...

Optimal Configuration of Services in Network Function Virtualization

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

Optimal Configuration of Services in Network Function Virtualization

Configuring Dynamic Heterogeneous Wireless Communications Networks using a Customised Genetic Algorithm

  • Claussen H.
  • Kucera S.

Wireless traffic is growing at an exponential rate due to the prevalence of smart devices, surging demand for multimedia content and the advent of the "Internet of Things". To satisfy demand, network operators are deploying Small Cells alongside their traditional Macro Cells. The resulting Heterogeneous Networks (HetNets) are highly spectrally ...

High-speed Room Temperature Terahertz Detectors based on InP Double Heterojunction Bipolar Transistors

  • Blin S.
  • But D.
  • Consejo C.
  • Coquillat D.
  • Dyakonova N.
  • Gutin A.
  • Knap W.
  • Konczykowska A.
  • Muraviev A.
  • Nodjiadjim V.
  • Nouvel P.
  • Pénarier A.
  • Riet M.
  • Ruffenach S.
  • Shur M.
  • Teppe F.
  • Torres J.

Compact and fast detectors, for imaging and wireless communication applications, require efficient rectification of electromagnetic radiation with frequencies approaching 1 THz and modulation bandwidth up to a few tens of GHz. This can be obtained only by using a mature technology allowing monolithic integration of detectors with low-noise amplifiers. One ...

Modulation over Nonlinear Spectrum: Continuous and Discrete Spectrum

  • Aref V.
  • Buelow H.
  • Thai Le S.

Nonlinear Frequency Division Multiplexing (NFDM) is considered when data is modulated in both parts of nonlinear Fourier spectrum: continuous spectrum and discrete spectrum. Multiplexing and demultiplexing of both spectra are explained and a time-domain detection method of discrete spectrum is introduced. The transmission of NFDM symbols is experimentally demonstrated over ...

Multi-User Preemptive Scheduling For Critical Low Latency Communications in 5G Networks

  • Esswie A.
  • Pedersen K.

5G new radio is envisioned to support three major service classes: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine type communications. Emerging URLLC services require up to one millisecond of communication latency with 99.999% success probability. Though, there is a fundamental trade-off between system spectral efficiency (SE) ...

1.3µm Electro-Absorption Modulated Laser at 56Gb/s with record 7.4dB dynamic extinction ratio

  • Achouche M.
  • Blache F.
  • Cerulo G.
  • Debregeas H.
  • Fortin C.
  • Garreau A.
  • Jorge F.
  • Lanteri D.
  • Mallecot F.
  • Mekhazni K.
  • Pommereau F.
  • Provost J.

For future access networks, we present a 56Gb/s 1.3µm electro-absorption modulated laser. The device, based on robust semi-insulated buried waveguide technology, shows record 7.4dB dynamic extinction ratio with 1.8dBm fiber coupled power.

ClickNF: a Modular Stack for Network Function Composition

  • Gallo M.
  • Laufer R.

Network function virtualization calls for the replacement of specialized equipment and monolithic software deployments by functionally equivalent but leaner modular software implementations. Server-side network functions developers could especially benefit from the existence of a highly customizable yet scalable framework for the rapid design of network applications. However, balancing the conflicting ...

Automatic World Knowledge-Informed Cloud Distribution of Real-time Streaming Services

  • Llorca J.
  • Roelands M.
  • Tulino A.
  • Van Raemdonck W.

With cloud-integrated networks becoming the distributed canvas for ever more ad-hoc instantiated, hyperpersonalized data streaming services, the deployment of such services as instantiations of data flow graphs composed of streams and stream processing operators is the dominant approach of choice. In this paper, we elaborate a novel method to automatically ...

Dual Polarization In-phase and Quadrature High Speed Submarine Transmission with Only Two Photodiodes, ADC, MZM and DAC

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

As coherent optical communications industry moves to bitrates per carrier of 400 Gb/s and beyond, opto-electronics components with ever-increasing bandwidth and sampling rate become available. Based on these high-speed components, we propose a simplified transmitter and receiver architecture enabling the reduction of components to only two photodiodes (PD), two analog-to-digital ...