56-Gbps 4-PAM System with nearly 40 km Transmission by Using an O-band Electro-Absorption Modulated Laser and a Semiconductor Optical Amplifier

  • Chen J.
  • Chen Y.
  • Chuang C.
  • Hong A.
  • Lin T.
  • Liu J.
  • Nguyen H.
  • Shie B.
  • Wei C.

A 56-Gbps 4-PAM system that uses an electro-absorption modulated distributed feedback laser at wavelength of 1293 nm and a semiconductor optical amplifier is demonstrated for 37.8-km transmission with BER below 7% FEC limit ( 2×10^(-4)).

A High Loss Budget 400-Gbps 8-Channel DWDM-OFDM Long-Reach PON with over 60 km Transmission without any In-line or Pre-Amplifier

  • Chen J.
  • Chen Y.
  • Chuang C.
  • Liu J.
  • Lu S.
  • Nguyen H.
  • Wang C.
  • Wei C.
  • Wu H.

An 8-channel IMDD DWDM-OFDM LR-PON is demonstrated with the data rate of each channel over 50 Gbps and 25-dB loss budget for 60-km transmission without in-line or pre-amplifier and supporting 128 ONUs over 3.1-Gbps/ONU capacity.

A Group-Blind Detection Scheme for Uplink Multi-Cell Massive MIMO

  • Ferrante G.
  • Geraci G.
  • Quek T.

With the reuse of identical training sequences by users in different cells, massive MIMO is severely affected by pilot contamination due to residual error in channel estimation. In this paper, we consider the traditional structure of the training phase, where orthogonal pilot sequences are reused, and analyze a recently proposed ...

A New Method of MIMO-Based Non-Orthogonal Multiuser Downlink Transmission

  • Claussen H.
  • Fang D.
  • Geraci G.

In this paper, we propose a new method for nonorthogonal multiuser downlink transmission, referred to as multiple-input multiple-output lattice partition multiple access (MIMO-LPMA). The new method is based on the combination of user selection, zero forcing beamforming, and LPMA, and it uses N base station antennas to deliver information to ...

Comparison of 51.84-Gb/s SSB PAM4 and OOK Signal In An EML-Based IM/DD 80-km Transmission System

  • Chen J.
  • Chen H.
  • Chen Y.
  • Kaneda N.
  • Lee S.

A comparison between 51.84-Gb/s SSB PAM4 and OOK signal at a transmission distance up to 80 km is experimentally demonstrated at the first time. An EML-Based IM/DD 80-km transmission is achieved by both modulation formats. The experimental result shows that the OOK signal performs 4-dB sensitivity difference better than the ...

Polarization Dependent Loss: How the performance penalty depends on signaling and receiver architecture

  • Arnaud Dumenil
  • Awwad E.
  • Measson C.

Long-haul and metro polarization-multiplexed fiber systems are impaired by polarization dependent loss (PDL) that fundamentally limits their capacity. We observe in this work that, given discrete power-limited signaling, significant gains can be achieved when signaling and channel equalization are properly addressed. More precisely, compared to a conventional processing, up to ...

Mutual Information of Discrete Nonlinear Spectrum

  • Aref V.
  • Buelow H.
  • Schmalen L.

The mutual information in the nonlinear spectrum of a 64-PSK modulated 2-eigenvalue soliton was calculated from statistical draws of noisy signal. 1-bit gain is expected for joint detection of both spectral amplitudes.

800 Gb/s Dual Channel Transmitter with 1.056 Tb/s gross rate

  • Buchali F.
  • Eriksson T.
  • Idler W.
  • Schuh K.
  • Templ W.

We demonstrate generation of a 44Gbaud 64QAM dual polarization dual channel signal from one laser achieving a gross rate of 1.056TBit/s. Fiber transmission reach of over 500 km of SSMF is also demonstrated.

Nonlinear Tolerant Probabilistically Shaped Real-Valued Modulation

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

We apply probabilistic shaping to polarization-multiplexed real-valued signal and show that nonlinear tolerant modulation with higher spectral efficiency compared to phase-conjugated twin-wave with QPSK, is possible.

5Tb/s transmission over 2.2 km of multimode OM2 fiber with wavelength and mode group multiplexing and direct detection

  • Charlet G.
  • Ghazisaeidi A.
  • Renaudier J.
  • Simonneau C.

We demonstrate 5Tb/s bidirectional transmission (2.5Tb/s in each direction) over 2.2km of OM2 fiber using selective excitation of 4 mode groups and WDM multiplexing with DMT modulation format and direct detection.

Estimation of the conditional distribution of an optical nonlinear channel with memory using deep neural networks

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

We demonstrate that deep neural networks can be used to approximate the conditional distribution of a non-linear channel with memory. This distribution is then used in the BCJR algorithm to infer the unknown transmitted data. This procedure is validated experimentally in a IM/DD 3.2 km long transmission of 64 GBd ...

5G Hype and Realities

  • Garyantes M.

5G is touted as the next great thing in wireless communications, coming your way any day now. This talk will discuss the likely 5G use cases (and which ones are unlikely) and the challenges and opportunities afforded. With new frequency bands come new challenges, and conventional base station architectures need ...

A Framework for Security on Demand

  • Hu Z.
  • Yan X.
  • Yin E.

This paper is to design a framework that enables to create customized security chain using SFC to provide security services dynamically and adaptively for different applications. In this way, security on demand could be achieved. Moreover, two use cases are given to show how to create security chain and corresponding ...

DNA-GA: A New Performance Analysis Tool for the Uplink Cellular Networks

  • Guoqiang Mao
  • Lopez-Perez D.
  • Ming Ding
  • Zihuai Lin

In this paper, we propose a new approach of network performance analysis for the uplink (UL) of cellular networks, which is based on deterministic network analysis using Gaussian approximation (DNA-GA). First, we present the DNA-GA analysis to investigate the UL signal-to-interference ratio (SIR) performance. Second, we introduce two approaches for ...

Performance Impact of Base Station Antenna Heights in Dense Cellular Networks

  • Lopez-Perez D.
  • Ming Ding

In this paper, we present a new and significant theoretical discovery. If the absolute height difference between base station (BS) antenna and user equipment (UE) antenna is larger than zero, then the network performance in terms of both the coverage probability and the area spectral efficiency (ASE) will continuously decrease ...

mmWave Relayed Backhaul for Very High User Rate Delivery

  • Du J.
  • Onaran E.

Relay aided backhaul has been proposed to meet the challenge of providing Gbps high user rate over long distance (~1 km) in millimeterWave. The problem of backhaul topology design and optimal bandwidth-power partitioning has been formulated as a constrained optimization problem to minimize the bandwidth consumption for given user rate ...

5G Access Slices with Native TCP

  • Francini A.
  • Joseph Beshay
  • Kucera S.
  • Ravi Prakash
  • Sharma S.

The 5G system integrates a variety of disruptive innovations in wireless access: new air interfaces, split link architectures that separate base-band processing and radio heads, virtualization of functions in general-purpose processors, and flexible chaining of virtualized functions in network slices tailored to the specific needs of diverse services. Besides new ...

SRAudit: Auditing the Structural Reliability of the Clouds to Ward Off Correlated Failures

  • Chen R.
  • Ennan Zhai
  • Ruzica Piskac

Cloud computing systems heavily rely on redundancy techniques for ensuring reliability. Nevertheless, as cloud systems become ever more structurally complex, infrastructure components, e.g., replica servers, may unwittingly share deep dependencies, such as aggregation switches. These unexpected common dependencies may result in correlated failures that undermine redundancy efforts. Although existing diagnosis ...

Towards Reliable Application Deployment in the Cloud

  • Akkus I.
  • Chen R.
  • Hilt V.
  • Rimac I.
  • Viswanath B.

Applications are moving from self-maintained infrastructure to the cloud. A common practice to increase the reliability of a cloud application is to deploy redundant instances. Unfortunately, such redundancy efforts can be undermined if the application's instances share common dependencies. This paper presents reCloud, a novel system which can efficiently find ...