Earables for Personal- scale Behaviour Analytics

We present eSense - an open and multi-sensory in-ear wearable platform to detect and monitor human activities. eSense is a true wireless stereo (TWS) earbud with dual-mode Bluetooth and Bluetooth Low Energy and augmented with a 6-axis inertial measurement unit and a microphone. We discuss the eSense platform and its ...

Predictive Autoscaling Orchestration for Cloud-native Telecom Microservices

Mobile traffic is dramatically increasing in recent several years with the evolution of mobile network toward 5G era. Leveraging network function virtualization (NFV) and cloud computing the elasticity is the advantage of mobile network systems. The autoscaling orchestrator can adjust the number of virtual network functions (VNFs) in a telecom ...

Optimal Control of Distributed Computing Networks with Mixed-Cast Traffic Flows

Distributed computing networks, tasked with both packet transmission and processing, require the joint optimization of communication and computation resources. We develop a dynamic control policy that determines both routes and processing locations for packets upon their arrival at a distributed computing network. The proposed policy, referred to as Universal Computing ...

5G as Enabler for Industrie 4.0 Use Cases: Challenges and Concepts

The increasing demand for highly customized products, as well as flexible production lines, can be seen as trigger for the "fourth industrial revolution", referred as "Industrie 4.0". Current systems are usually using wire-line technologies to connect sensors and actuators. To enable a higher flexibility such as moving robots or drones, ...

Statistical Analysis of Downlink Transmissions for Ultra-Reliable Low-Latency Communications

The fifth generation (5G) of wireless systems aims at providing connectivity for a large number of applications by introducing new services. Ultra-reliable low-latency communications (URLLC) is one of the considered services that envisions mission-critical applications, such as industrial Internet, remote surgery, and intelligent vehicular systems. The 5G new radio (NR) ...

The Capacity Effects of Relays in Residential 5G Networks

We examine the effects of introducing relays into millimeter-wave residential access networks. Single-hop networks require professional customer equipment installation on rooftops in order to obtain the necessary line-of-sight properties. An alternative is a two-hop approach with relays that each serve multiple homes. In this the final access links do not ...

Linear Programming Bounds for Entanglement-Assisted Quantum Error-Correcting Codes by Split Weight Enumerators

  • Ashikhmin A.
  • Lai C.

Linear programming approaches have been applied to derive upper bounds on the size of classical and quantum codes. In this paper, we derive similar results for general quantum codes with entanglement assistance by considering a type of split weight enumerator. After deriving the MacWilliams identities for these enumerators, we are ...

138 Tbit/s Mode- and Wavelength Multiplexed Transmission over 6-Mode Graded-Index Fiber

  • Alvarado-Zacarias J.
  • Alvarez-Aguirre R.
  • Amezcua Correa R.
  • Chen H.
  • Fontaine N.
  • Gruner-Nielsen L.
  • Jensen R.
  • Koonen T.
  • Lingle R.
  • Okonkwo C.
  • Ryf R.
  • Sun Y.
  • Van Weerdenburg J.

We report on the multiplexing of 12 spatial channels and 120 wavelength channels in the C-band, each carrying 16-QAM symbols at 30 Gbaud over graded-index few-mode fiber. A combination of multiple fiber spools with positive and negative modal dispersion values are exploited to form a 59 km link with 0.35 ...

Kramers-Kronig Receivers for 100-km Datacenter Interconnects

  • Antonelli C.
  • Chen X.
  • Mecozzi A.
  • Raybon G.
  • Sethumadhavan C.
  • Shtaif M.
  • Winzer P.

In this paper, we review in detail experimental demonstrations of Kramers-Kronig (KK) based direct detection systems with high per-carrier interface rates, high spectral efficiencies, and ~100-km reach. Two realizations of KK based receivers are demonstrated, including single-polarization and dual-polarization versions. Critical aspects of the KK receiver such as the carrier-to-signal ...

Directly Reflectivity Modulated Laser

  • Brent R.
  • Chen Y.
  • Dong P.
  • Maho A.
  • Melikyan A.

We report a novel directly reflectivity modulated laser (DRML) whose output is modulated through a Michelson interferometer reflector of the laser cavity. 25/40 Gb/s on-off-keying and 25 Gb/s binary phase-shift keying signals are generated and the wavelength tunability is >20 nm.

Massive MIMO has Unlimited Capacity

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

The spectral efficiency (SE) of cellular networks can be improved by the unprecedented array gain and spatial multiplexing offered by Massive MIMO. Since its inception, the coherent interference caused by pilot contamination has been believed to create a finite SE limit, as the number of antennas goes to infinity. In ...

QoS-aware protection in flexgrid optical networks

Elastic optical networks generally rely on protection and restoration mechanisms to prevent the detrimental effect of fiber cuts. In particular, we investigate optical protection in flexgrid optical networks where the symbol rate is varied as a complementary approach to modulation format. We propose a novel protection scenario, whereby premium traffic ...

Finite-Length Analysis of Spatially-Coupled Regular LDPC Ensembles on Burst-Erasure Channels

Regular Spatially-Coupled LDPC (SC-LDPC) ensembles have gained significant interest since they were shown to universally achieve the capacity of binary memoryless channels under low-complexity belief-propagation decoding. In this work, we focus primarily on the performance of these ensembles over binary channels affected by bursts of erasures. We first develop an ...

Low-Complexity Nonlinear Zero-Forcing Precoding Under Per-Line Power Constraints for Improved Downstream G.fast Active-User Peak-Rates

We consider nonlinear zero-forcing (ZF) precoding design to improve the downstream G.fast peak-rates when only a few users in the cable binder are active. In order to compute the optimal nonlinear ZF precoder under per-line power constraints (PLPCs), we present a novel low-complexity dual decomposition algorithm, in which the key ...

Beamforming with Artificial Noise for Secure MISOME Cognitive Radio Transmissions

In this paper, we consider multiple-input singleoutput multi-eavesdropper (MISOME) cognitive radio networks (CRNs), where a secondary user (SU) aims to transmit confidential information to a legitimate SU receiver (SU-RX) in the presence of a primary user (PU) and a multi-antenna passive eavesdropper in fast fading environments. For this system setting, ...

How to ensure reliable connectivity for aerial vehicles over cellular networks

  • Amorim Rafhael
  • Kovacs I.
  • Mogensen P.
  • Nguyen H.
  • Sørensen Troels
  • Wigard J.

Widely deployed cellular networks are an attractive solution to provide large scale radio connectivity to unmanned aerial vehicles. One main prerequisite is that coexistence and optimal performance for both aerial and terrestrial users can be provided. Todays cellular networks are, however, not designed for aerial coverage, and deployments are primarily ...

Optimal VNFs placement in CDN Slicing over Multi-Cloud Environment

This paper introduces a Content Delivery Network as a Service (CDNaaS) platform that allows dynamic deployment and life-cycle management of virtual Content Delivery Network (CDN) slices running across multiple administrative cloud domains. The CDN slice consists of four Virtual Network Function (VNF) types, namely virtual transcoders, virtual streamers, virtual caches, ...

Coalitional Game for the Creation of Efficient Virtual Core Network Slices in 5G Mobile Systems

Many ongoing research activities relevant to 5G mobile systems concern the virtualization of the mobile core network, including the Evolved Packet Core (EPC) elements, aiming for system scalability, elasticity, flexibility, and cost-efficiency. Virtual EPC (vEPC)/5G Core will principally rely on some key technologies such as Network Function Virtualization (NFV), Software ...

Correction Factor for Analysis of MIMO Wireless Networks With Highly Directional Beamforming

In this letter, we reconsider a popular simplified received signal power model with single stream beamforming employed by the transmitter and the receiver in the regime when the beams have high gain and narrow beamwidth. We define the correction factor as the ratio of the average actual received signal power ...

Silicon Photonics Enabled Hyper-wideband RF Receiver With >85% Instantaneous Bandwidth

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

We demonstrate the first-ever silicon photonics enabled hyper-wideband RF spread-spectrum link. A silicon photonic mode-locked laser encoded with a four-channel silicon phase encoder is used to generate optical carriers that coherently demodulate a received RF signal spanning an instantaneous bandwidth greater than 85% of the center frequency (12GHz/14GHz). This allows ...