Ultra-Dense Networks: A New Look at the Proportional Fair Scheduler

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

In this paper, we theoretically study the proportional fair (PF) scheduler in the context of ultra-dense networks (UDNs). Analytical results are obtained for the coverage probability and the area spectral efficiency (ASE) performance of dense small cell networks (SCNs) with the PF scheduler employed at base stations (BSs). For the ...

Scaling Deep Learning-based Decoding of Polar Codes via Partitioning

  • Cammerer S.
  • Gruber T.
  • Hoydis J.
  • Ten Brink S.

The training complexity of deep learning-based channel decoders scales exponentially with the codebook size and therefore with the number of information bits. Thus, neural network decoding (NND) is currently only feasible for very short block lengths. In this work, we show that the conventional iterative decoding algorithm for polar codes ...

Dynamic TDD: the Asynchronous Case and the Synchronous Case

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

Small cell networks (SCNs) are envisioned to embrace dynamic time division duplexing (TDD) in order to tailor downlink (DL)/uplink (UL) subframe resources to quick variations and burstiness of DL/UL traffic. The study of dynamic TDD is particularly important because it serves as the predecessor of the full duplex transmission technology, ...

Towards a cognitive warning system for safer hybrid traffic

  • Csépe V.
  • Honbolygó F.
  • Mallet P.
  • Mestre D.
  • Pergandi J.
  • Török Á.
  • Varga K.

Technological development brings increasingly closer the era of widely available self-driving cars. However, presumably there will be a time where human drivers and self-driving cars would share the same roads. In the current paper, we propose a cognitive warning system that utilizes information collected from the behaviour of the human ...

Efficiency of Cloud-Based Application Services

  • Bauer E.

This theoretical work deeply analyzes operational and economic efficiency of producing services for end users from applications executing on cloud computing platforms. Operational efficiency is factored into service production efficiency, capacity utilization efficiency and VNF efficiency. A dynamic, time-driven, activity-based cost model of service production is derived. Six efficiency improvement ...

Agent composition for 5G management and orchestration

  • Raisanen V.

Virtualized execution environments in 5G network call for a linkage between network management and orchestration. Execution of 3GPP functionalities and management applications in the cloud also presents an opportunity to innovate outside of traditional paradigms. We describe a framework focusing on a virtual execution environment and utilizing agent composition to ...

Connectivity extraction in cloud infrastructures

  • Dubus S.
  • Kanoun W.
  • Mensah P.
  • Morin C.
  • Piolle G.
  • Totel E.

For management and security purposes, cloud providers should know the connectivity graph between virtual machines. Since traditional methods used in physical networks produce incomplete results and are hardly usable in the Cloud, we propose to use information provided by a Cloud Management Software and an SDN controller, to compute the ...

Impact of timing mismatch in multicarrier spectral-slicing transmission system using single coherent receiver

  • Le S.
  • Nguyen D.
  • Nguyen H.
  • Nguyen T.
  • Truong D.

Summary form only given. Strong light-matter coupling has been recently successfully explored in the GHz and THz [1] range with on-chip platforms. New and intriguing quantum optical phenomena have been predicted in the ultrastrong coupling regime [2], when the coupling strength Ω becomes comparable to the unperturbed frequency of the ...

Future scenarios and value network configurations for industrial 5G

Billions of connected devices with new application requirements, deployment scenarios and business models will emerge in the future. 5G will follow both evolutionary path, that is, enhanced mobile broadband and coverage, and revolutionary path, that is, massive and critical Machine Type Communications (MTC). These MTC, also known as Machine-to-Machine (M2M) ...

One solution of decision making algorithm for semi-autonomous driving

  • ŽLukaä?
  • Majkic M.
  • Peles N.
  • Samard D.

The topic of decision making algorithm in semi-autonomous driving is discussed in this paper. Semi-autonomous vehicle is capable of many aspects of autonomous driving. But, there are situations that semi-autonomous driving algorithm is not capable to handle. In such situations vehicle control is given to driver. This kind of an ...

5G micro-operator networks â€" A key enabler for new verticals and markets

  • Holtmanns S.
  • Li Z.
  • Prasad A.
  • Uusitalo M.

The demand for wireless information exchange in the form of data and multimedia content has been growing exponentially over the past few years, and the trends are expected to persist for the future. Due to the continued growth in demand and support required for new use cases and features, currently ...

Comparison of LoRaWAN Classes and their Power Consumption

  • Bergs Johan
  • Famaey J.
  • Hawinkel C.
  • Phui San Cheong

Many Internet of Things (IoT) applications benefit greatly from low-power long-range connectivity. A promising technology to achieve the low-power and long-range requirements is seen in LoRaWAN, a media access control (MAC) protocol maintained by the LoRa Alliance and leveraging Semtech patented LoRa radio modulation technology. LoRaWAN provides three different device ...

Comparison of coding strategies for a combined multi-Gbps fiber and twisted-pair link

  • Guenach M.
  • Lefevre Y.
  • Moeneclaey M.
  • Suls A.

In this contribution we consider a communication system consisting of a cascade of a passive optical network (PON) link with on/off keying, and a short twisted pair (TP) link with discrete multitone modulation (DMT). Three coding configurations are investigated. In the first configuration (C1), the PON link and the TP ...

75 GHz InP DHBT Power Amplifier Based on Two-Stacked Transistors

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

We present in this paper the design and the implementation of a two stage 75 GHz InP Double Heterojunction Bipolar Transistor (DHBT) power amplifier (PA). An optimized two-stacked transistor power cell has been designed, which represents the building block in the power stage as well as in the driver stage. ...

Physical limits on directional beam performance of 28 GHz links

  • Chizhik D.
  • Valenzuela R.
  • Venkatesan S.

Impact of finite coherence in frequency and time on directional beam in a canonical 28 GHz small cell link is assessed. Terminal motion and delay spread are found to limit the maximum achievable directional gain due to the need to measure the channel across time and frequency. It is found ...

Photonic integrated circuit based on Hybrid III-V/Silicon Integration

  • Brenot R.
  • Chen Y.
  • De Valicourt G.
  • Dong P.
  • Eggleston M.
  • Kim K.
  • Lee S.
  • Melikyan A.
  • Sethumadhavan C.
  • Simsarian J.
  • Verdier A.
  • Zhu C.

This paper summarizes recent advances of integrated hybrid InP/SOI lasers and transmitters based on edge coupling. At first, we review the different integration method between III-V materials and silicon. Then we focus on using an external III-V chip coupled via edge coupling to our silicon photonic integrated circuit. The paper ...

Electrochromic Thin Films WO3-LiNbO3-NiO Broadband Microwave Characterization at Various Temperatures

  • Bulja S.
  • Cahill R.
  • Kopf R.
  • Norooziarab M.

This paper describes, for the first time, dielectric characterization of an electronically tunable electrochromic (EC) thin film material using a temperature- controlled microstrip line method between 7C to 50C in a broad frequency band of 1-67 GHz. The two ends of the microstrip line, directly exposed to the tunable EC ...

Convolutional Neural Networks for Figure Extraction in Historical Technical Documents

  • Levy C.
  • Saniee I.
  • Yu C.

We present a novel method of extracting figures and images from pages in scanned documents, especially from historical technical documents. Our method uses existing tools, in particular PDF Figures, to extract figures from modern structured PDF documents. We use PDF Figures to generate data which are used to train a ...

I/Q Record-Playback in OAI

  • Bizouarn E.
  • Mongazon-Cazavet B.

A method for recording and replaying radio I/Q samples inside OAI (OpenAirInterface) software.