A Scaleable and License Free 5G Internet of Radio Light Architecture for Services in Train Stations

In this paper we present a 5G Internet Radio- Light (IoRL) architecture for underground train stations that can be readily deployed because it utilizes unlicensed visible light and millimeter wave part of the spectrum, which does not require Mobile Network Operator (MNO) permission to deploy and which is used to provide travelers with accurate location, interaction, access to Internet and Cloud based Services, such as high resolution video on a Tablet PC. The paper describes the train station use cases and the IoRL architecture.European Commissio

A Scalable and License Free 5G Internet of Radio Light Architecture for Services in Homes & Businesses

In this paper we present a 5G Internet Radio-Light (IoRL) architecture for homes that can be readily deployed because it utilizes unlicensed visible light and millimeter wave part of the spectrum, which does not require Mobile Network Operator (MNO) permission to deploy and which is used to provide inhabitants of houses with accurate location, interaction, access to Internet and Cloud based services such as high resolution video on a Tablet PC. The paper describes the home use cases and the IoRL architecture.EU Horizon 202

Time-Frequency Analysis of Signals Generated by Rotating Machines

This contribution is devoted to the higher order time-frequency analyses of signals. Firstly, time-frequency representations of higher order (TFRHO) are defined. Then L-Wigner distribution (LWD) is given as a special case of TFRHO. Basic properties of LWD are illustrated based on the analysis of mono-component and multi-component synthetic signals and acoustical signals generated by rotating machine. The obtained results confirm usefulness of LWD application for the purpose of rotating machine condition monitoring

UWB M-sequence based radar technology for localization of first responders

Current solutions for localization of first responders are mainly based on fusion of multiple sensors and communication units. This solution usually requires too much space and weight that must be carried by rescue, police or military personnel. The goal of the paper is to demonstrate the benefits of UWB technology for such an application scenario. This technology represents a promising solution since it allows the design of a localization system where a tag that is carried by first responders can be small and light-weighted and despite of this it allows precise indoor localization and identification of the users. Moreover, UWB technology is inherently robust against narrowband jamming and eavesdropping. This paper describes a possible system concept which is based on M-sequence UWB technology. The ranging accuracy, the coverage and the number of users are evaluated by using UWB measurements as well as simulations

Antenna array configurations for terrestrial backhaul links at Ka-band frequencies

The paper considers a backhaul network for Ka-band. In this band, antenna arrays must employ large number of elements with appropriate beamforming techniques to combat the severe path loss. The goal of this paper is to analyze massive antenna arrays under realistic considerations for the use in terrestrial backhaul links. This analysis addresses practical issues from the implementation point of view such as 3D array geometry, the minimum number of radiating elements needed to fulfill link budget requirements in backhaul links, distribution of radiating elements in a 3D array geometry and influence of realistic antenna patterns on beamforming capabilities of such arrays. The results indicate that a realistic backhaul scenario may require antenna arrays containing thousands of radiating elements. Selected simulation examples show that polarimetric beamforming is required in realistic scenarios especially when radiating elements do not have good cross polarization discrimination

Block diagonalization for interference mitigation in Ka-band backhaul networks

This paper considers the design of precoding and decoding techniques for backhaul networks at Ka band. In this frequency band, large antenna arrays must be employed with appropriate beamforming and precoding techniques to combat the high path loss. Traditional multi-antenna systems use digital baseband beamforming and precoding that is not economical for large antenna arrays due to its cost and power consumption. Recently, hybrid analog-digital solutions were suggested for millimeter wave multiple-input-multiple-output systems. They rely on two steps. The first step consists of an analog only beamforming which aims at the exploitation of the high antenna gain offered by the large-scale antenna array. The second step mitigates the multiuser interference by means of digital precoding. In this paper, we focus on the second step of the hybrid precoding. We propose a solution for interference mitigation in multi-base station scenarios. Our solution is based on a block diagonalization technique and requires full channel state information at each base station of a backhaul network. The performance of the algorithm is compared to a partial block diagonalization which was originally proposed for the single base station downlink scenario