Mixed-signal strategies for 5G: final architecture and design for flexibility, power and spectral efficiency

  • Ferling D.

The document contains only Nokia contributions to the deliverable D3.2 of the EU funded project Flex5Gware. It deals with concepts and solutions for multiband base station transmitters and multi-chain transmitters for MIMO applications.

Analogue components for high-performing and versatile 5G RF front-ends

  • Bulja S.
  • Doumanis E.
  • Ferling D.

The document contains the Nokia contributions to the deliverable D2.2 of the EU funded project Flex5Gware: This deliverable describes concepts and solutions for RF front-ends and antennas designated for network elements and devices in 5G mobile systems. Key components and features are defined to significantly improve the capability of mobile ...

An examination of the benefits of scalable TTI for heterogeneous traffic management in 5G networks

  • Fountoulakis E.
  • Liao Q.
  • Pappas N.
  • Suryaprakash V.
  • Yuan D.

The rapid growth in the number and variety of connected devices requires 5G wireless systems to cope with a very heterogeneous traffic mix. As a consequence, the use of a fixed transmission time interval (TTI) during transmission is not necessarily the most efficacious method when heterogeneous traffic types need to ...

Self-similarity in Urban Wireless Networks: Hyperfractals

  • Jacquet P.
  • Popescu D.

We introduce a model of Poisson patterns of fixed and mobile nodes on lines designed for urban wireless networks. The pattern obeys to “Hyperfractal” rules of dimension larger than 2. The hyperfractal pattern is the best suitable to capture the traffic over the streets and highways in a city. We ...

On the Performance of Practical Ultra-Dense Networks: The Major and Minor Factors

  • Lopez-Perez D.
  • Ming Ding

In this paper, we conduct performance evaluation for Ultra-Dense Networks (UDNs), and identify which modelling factors play major roles and minor roles. From our study, we draw the following conclusions. First, there are 3 factors/models that have a major impact on the performance of UDNs, and they should be considered ...

Making the Case for Dynamic Wireless Infrastructure Sharing: a Techno-Economic Game

  • Capone A.
  • Lieto A.
  • Malanchini I.
  • Suryaprakash V.

Dynamic and flexible radio resource management in a multi-tenant shared infrastructure is an effective strategy to improve the quality experienced by end users. In this framework, we propose a techno-economic model that allows network operators to compete and dynamically select the quality target to deliver to their customers, while simultaneously ...

Beam Based Stochastic Model for Evaluating Coverage Probability in 5G Millimeter Wave Systems

  • Aziz D.
  • Malanchini I.
  • Tatino C.

Communications using frequency bands in the millimeter waves range will play a key role in future generations of mobile networks. It will provide high data rates by exploiting a wide range of unlicensed spectrum available at very high carrier frequencies. The prevailing challenge at high frequencies is to mitigate the ...

Optimized Combination of Conventional and Constrained Massive MIMO Arrays

  • Ganesan R.
  • Kramer G.
  • Panzner B.
  • Staudacher M.
  • Zirwas W.

A combination of low cost constrained massive multiple-input-multiple-output (MIMO) and conventional arrays for constructing receiver signal points is investigated. The constrained radio frequency (RF) front ends are limited to on/off switching of antenna elements. A few full RF frontends are shown to compensate for the signal errors of the constrained ...

Technologies and architectures to enable SDN in converged 5G/optical access networks

  • Blumm C.
  • Bonk R.
  • Brandonisio N.
  • Carey D.
  • Hill A.
  • Mcgettrick S.
  • Ossieur P.
  • Parsons N.
  • Payne D.
  • Pfeiffer T.
  • Porto S.
  • Ruffini M.
  • Slyne F.
  • Talli G.
  • Townsend P.

The challenging performance targets of future 5G networks will require a radical change in the network design with a much closer interaction between wireless and optical systems. Dynamically reconfigurable time-division multiplexing (TDM) dense wavelength division multiplexing (DWDM) long-reach passive optical networks (PONs) provide a promising platform to enable the convergence ...

Potential of WDM packets

  • Chiaroni D.
  • Uscumlic B.

The need for ultra-low latencies fronthaul/backhaul solutions for the 5G as well as the need for low energy consumption technologies in a cost-effective way push constructors of equipment to propose disruptive approaches offering new KPIs for ICT. This paper will then draw the potential of WDM packets in terms of ...

"VERNE": New Packet-Optical Network for Optically Transparent and Lossless Data Centers

  • Chiaroni D.
  • Uscumlic B.

Further growth of data centers is imposing to look for very scalable, cheap and energy efficient interconnection network inside data centers. In this paper, we propose a new packet-optical network called "VERNE", aiming to satisfy the above requirements by resorting to the all-optical and ``lossless'' operation (by "lossless" we mean ...

Side-Link Assisted Hybrid Automatic Repeat Request for Ultra-Reliable Low Latency Communications

One of the key use cases of 5G is to deliver ultra-reliable low latency communication (URLLC). Besides antenna and frequency diversity techniques, hybrid automatic repeat request (HARQ) is a powerful tool to increase reliability. However, due to the low latency requirement, only a very small number of retransmissions can be ...

Equalization-enhanced phase noise suppression advantage of CO-FBMC over RGI CO-OFDM

  • Le S.
  • Megret P.
  • Missel R.
  • Nguyen T.
  • Wuilpart M.

Reduced-guard-interval (RGI) coherent optical orthogonal frequency division multiplexing (CO-OFDM) has been considered as a promising technique for high-speed optical fiber communication systems due to its simple equalization scheme and tolerance to residual chromatic dispersion (CD) [1]. However, one serious drawback of RGI OFDM is the high side lobes due to ...

Self-stabilized optoelectronic oscillator using optical feedback on integrated heterodyne source

  • Alouini M.
  • Primiani P.
  • Romanelli M.
  • Thorette A.
  • Vallet M.
  • Van Dijk F.

Generation of opto-RF signals through heterodyning is now firmly established, the RF frequency being provided by the beat note between two lasers. It offers true single sideband signals, 100% modulation depth and tunability. However, the use of two independent free-running lasers leads to a large RF linewidth that has to ...

Multi-plane light conversion with low plane count

  • Carpenter J.
  • Fontaine N.

Multi-plane light conversion (MPLC) [1], [2] consists of a series of phase masks separated by a Fourier transform or free-space propagation and is illustrated conceptually in Fig. 1(a). Through this cascaded sequence of phase masks, and the diffraction which occurs between the masks, it is possible to implement arbitrary unitary ...

Generation of new coherent light states using III-V semiconductor laser technology: VORTEX, continuum, dual frequency for THz and integration

  • Beaudoin G.
  • Blin S.
  • Chomet B.
  • Garnache A.
  • Lalanne P.
  • Legratiet L.
  • Myara M.
  • Paquet R.
  • Sagnes I.
  • Seghilani M.
  • Sellahi M.

Since years, III-V semiconductor based external-cavity VCSEL (VECSEL) concept [I] is pointed out as a technology of choice for beyond-state-of-the-art laser light sources, demonstrating wavelength flexibility, high power, high spatial, temporal and polarization coherence, CW or fs ultra-short pulsed operation, compactness and functionalities. The targeted coherent state is typically a ...

Integration of high coherence high power broadly tunable semiconductor lasers for NIR & MIR applications: Single and dual frequency state

  • Beaudoin G.
  • Cerutti L.
  • Chome B.
  • Denet S.
  • Ferrieres L.
  • Garnache A.
  • Lecocq V
  • Myara M.
  • Sagnes I.

Laser technology is finding applications in areas such as high resolution spectroscopy, radar-lidar, velocimetry, and more recently in the THz domain such as imaging or spectroscopy, where highly coherent tunable high power light sources are required. The Vertical External Cavity Surface Emitting Laser (VECSEL) technology [1] has been identified for ...

Energy based transmission optimisation in nonlinear Fourier domain

  • Derevyanko S.
  • Kamalian M.
  • Le S.
  • Prilepsky J.
  • Turitsyn S.

The systems employing nonlinear Fourier transform (NFT) as a method of nonlinearity mitigation have recently become the subject of intensive study (see e.g. [1-4] and references therein). In particular the so-called nonlinear inverse synthesis (NIS) method was proposed in [2]. Within this method the data is modulated using the continuous ...

Breaking Cycles via Graph Hierarchy

  • Ajwani D.
  • Nicholson P.
  • Parthasarathy S.
  • Sala A.
  • Sun J.

Taxonomy graphs that capture hyponymy or meronymy relationships through directed edges are expected to be acyclic. In practice, however, they have thousands of cycles, since they are created in a crowd-sourced way. Computation of a maximal directed acyclic subgraph of graphs, with inherent hierarchy, can benefit many applications. In this ...

Constant Delivery Delay Protocol Sequences for the Collision Channel Without Feedback

  • Chen C.
  • Salaun L.

We consider the collision channel without feedback, a time-slotted communication channel shared by K users. In this model, packets transmitted in the same time slot collide and are unrecoverable. Each users access the channel according to an internal periodical pattern called protocol sequence. Due to the lack of feedback, users ...