Big Data Analytics for 4.9G and 5G Mobile Network Optimization

  • Chiu P.
  • Holma H.
  • Luostari R.
  • Reunanen J.

Smartphones and other devices connected to a mobile network typically create billions of measurement samples every day. Those measurements are currently used for instantaneous resource allocation and link adaptation. There is much room for using the measurements also for network optimization with big data analytics. The measurements give valuable insight ...

Multi-Cell Performance of Grant-Free and Non-Orthogonal Multiple Access

  • Abebe A.
  • Kang C.
  • Lee J.
  • Rim M.

The compressive sensing-based random access may get impacted largely by other cell interference (OCI), which may shatter the sparsity of the received signal model unless the signature space assignment among interfering cells is carefully handled. In this paper, we investigate the performance of multi-sequence spreading-based random access (MSRA) scheme under ...

Evaluation of Indoor Radio Deployment Options in High-Rise Building

  • Kovacs I.
  • Mogensen P.
  • Nguyen H.
  • Tavares F.
  • Wigard J.

In this paper we set out to analyze the indoor capacity under a realistic high-rise building scenario. The study takes into consideration the number of indoor cells deployed per floor, different inter-site distances (ISDs), transmit power settings and outdoor macro interference levels. The outcome shows large variation in performance gain ...

Compact undersampled digital predistortion for flexible single-chain multi-band RF transmitter

  • Farrell R.
  • 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. To combat the imperfections of practical nonlinear power amplifiers in the single-chain multi-band RF solution, we ...

Silicon photonics enabled hyper-wideband wireless communication link

  • Chang C.
  • Chen Y.
  • Chimot N.
  • De Valicourt G.
  • Dong P.
  • Eggleston M.
  • Itoh T.
  • Kaneda N.
  • Kim K.
  • Lelarge F.
  • Sinsky J.
  • Wu M.

We demonstrate the first silicon photonics enabled hyper-wideband wireless link with an instantaneous bandwidth of 12 GHz, which is 85% of the center frequency of 14 GHz. The silicon photonics based RF receiver consists of a four-channel optical phase encoder, an integrated hybrid-silicon mode-locked laser, and two silicon ring notch ...

An 80MHz modulation bandwidth high efficiency multi-band envelope-tracking power amplifier using GaN single-phase buck-converter

  • Asbeck P.
  • Fujiwara T.
  • Kolmonen T.
  • Lanfranco S.
  • Piirainen O.
  • Sakata S.
  • Shinjo S.

We report a high efficiency multi-band Envelope-Tracking Power Amplifier (ET-PA) that supports modulation bandwidth up to 80MHz using real-time digital predistortion (RT-DPD). The ET-PA consists of a broadband RF-PA and a singlephase buck-converter. The RF-PA has maximum PAE over 50% from 0.7 to 2.1GHz in CW measurements. The buck-converter operates ...

On the Design of Preamble for Autonomous Communications with Extended Coverage

  • Balachandran K.
  • Kang J.
  • Karakayali K.
  • Kocak M.
  • Rege K.

5G wireless networks are expected to usher in massive Machine Type Communications (mMTC) pertaining to the Internet of Things (IoT). A large fraction of the devices participating in IoT are likely to be low-power devices that generate sporadic traffic. It is anticipated that autonomous grant-free communications would be needed to ...

Silicon Photonics Enabled Ultra-Wide Bandwidth Free-Space Radio Frequency Link

  • Chang C.
  • Chen Y.
  • De Valicourt G.
  • Eggleston M.
  • Kaneda N.
  • Kim K.
  • Lee S.

We demonstrate the first ultra-wideband RF link enabled by silicon photonics based optical signal proceessing. The system exhibits an instantaneous bandwidth of 12GHz and a carrier frequency of 14GHz. Filtering and phase encoding of 3GHz spaced comb lines allows for RF CDMA and interference rejection.

Coexistence of 5G With the Incumbents in the 28 and 70 GHz Bands

  • Bechta K.
  • Dietrich C.
  • Ghosh A.
  • Kim S.
  • Moorut P.
  • Visotsky E.

A promising way of realizing the fifth generation (5G) wireless systems is to operate 5G deployments at higher frequency bands, specifically in the millimeter-wave (mmW) spectrum (30â?"300 GHz). Access to such spectrum bands will enable future 5G wireless systems to meet the 5G requirements of peak rate greater than 10 ...

Efficient Fast-Convolution-Based Waveform Processing for 5G Physical Layer

  • Levanen T.
  • Pajukoski K.
  • Pirskanen J.
  • Renfors M.
  • Valkama M.
  • Valkonen S.
  • Yli-Kaakinen J.

This paper investigates the application of fast-convolution (FC) filtering schemes for flexible and effective waveform generation and processing in the fifth generation (5G) systems. FC-based filtering is presented as a generic multimode waveform processing engine while, following the progress of 5G new radio standardization in the Third-Generation Partnership Project, the ...

Performance Comparison of Capacity-Achieving Modulation Formats for Transoceanic Optical Systems

  • Fernandez De Jauregui Ruiz I.
  • Ghazisaeidi A.
  • Tran P.

We experimentally compare the performance of geometrically-shaped (64APSK) and probabilistically-shaped 64QAM (PS64QAM) formats considering linear and nonlinear penalties.

Transmit Filter Optimization for Improved Performance of Time-Frequency Packing System

  • Aref V.
  • Buchali F.
  • Buelow H.
  • Dischler R.
  • Hu Q.
  • Idler W.
  • Schmalen L.

The performance of time-frequency packing system is improved with an optimization of transmit filter. 0.2 dB gain in OSNR penalty and 4.5% increase in reach is experimentally demonstrated at spectral efficiency of 6.98 bits/s/Hz at the same system complexity.

Demonstration of a SDN-based Spectrum Monitoring of Elastic Optical Networks

  • Bigo S.
  • Boitier F.
  • Castoldi P.
  • Dallaglio M.
  • Delezoide C.
  • Dupas A.
  • Layec P.
  • Pham Van Q.
  • Sambo N.
  • Verchere D.
  • Zeghlache D.

This demo shows applications of SDN extensions for spectrum monitoring. To ensure a required quality of transmission, diagnostic is performed by dynamically setting monitor and adjusting their polling rate to manage optical frequency shift.

Flexible Optical Transmission close to the Shannon Limit by Probabilistically Shaped QAM

  • Buchali F.
  • Hu Q.
  • Idler W.
  • Schmalen L.

We are reviewing the application of probabilistic shaping in long haul optical transmission system and investigate the linear, nonlinear and implementation limits for this format in comparison to pragmatic QAM formats.

Extreme speed Power-DAC: leveraging InP DHBT for ultimate capacity single-carrier optical transmissions

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

With 100-Gbaud operation and 4-Vpp swing, InP DHBT Power-DAC enabled experiments with different types E/O modulators. Highest single-carrier transmission capacities were shown like 1.08 Tb/s transmitter with single modulator using 90GBd PDM-64QAM format.

Real-Time Burst-Mode Operation of an Integrated SOA-PIN/TIA Receiver for 25 Gbit/s/lambda and Beyond TWDM-PON

  • Achouche M.
  • Angelini P.
  • Blache F.
  • Bonk R.
  • Borkowski R.
  • Brenot R.
  • Caillaud C.
  • Dupuy J.
  • Duval B.
  • Goix M.
  • Mekhazni K.
  • Paret J.
  • Pfeiffer T.
  • Poehlmann W.

First real-time 25 Gbit/s burst-mode operation of an integrated SOA-PIN/TIA receiver for future generation T(W)DM-PON is presented. The device has a 2.7-dB better sensitivity than APD photoreceiver and 13-dB better than PIN photoreceiver at this bitrate.

Digital Subcarrier Multiplexing in Optically Routed Networks

  • Dar R.
  • Winzer P.

We examine the benefit of digital subcarrier multiplexing in optically routed networks. We show that optimizing the number of subcarriers not only improves system tolerance to nonlinearities, but also induces smaller performance variations in network scenarios.

How learning processes allows reducing uncertainties on network parameters and design margins

  • Delezoide C.
  • Pesic J.
  • Pointurier Y.
  • Seve E.

We show that, using a set of monitored physical parameters (received SNR, powers), the network planning tool can learn to reduce the uncertainties on system margins thanks to a more accurate estimation of the input parameters used in the Quality of Transmission (QoT) predictor tool.

Electronically Subcarrier Multiplexed PM-32QAM with Optimized FEC Overhead

  • Buchali F.
  • Eriksson T.
  • Idler W.
  • Schmalen L.

Variable-rate coding is essential for electronic subcarrier multiplexed systems. We study PM-32QAM with up to 16 subcarriers per wavelength and demonstrate that at a net bitrate of 350 Gbit/s, the distance can be increased by 300 km in WDM transmission.

Nonlinear Equalizer for 112-Gb/s SSB-PAM4 in 80-km Dispersion Uncompensated Link

  • Chen Y.
  • Kaneda N.
  • Lee S.

We present a blindly adaptive nonlinear channel equalizer that effectively compensates nonlinearity in SSB-PAM4 transceiver components. The proposed scheme is demonstrated over 56GBaud PAM4 modulation over 80km of dispersion uncompensated fibers with BER near 1E-4.