Wireless vehicular communications and sensing technologies are key to enabling more advanced intelligent transportation systems (ITSs) with improved safety efficiency. Within the realm of wireless communication, millimeter-wave (mmwave) technology has recently received much attention, providing rich spectrum resources support timely transmission large amounts data. This is especially important for applications because number sensors on modern vehicles rapidly increasing thus generating To...

Millimeter-wave frequencies between 6 and 100 GHz provide orders of magnitude larger spectrum than current cellular allocations allow usage large numbers antennas for exploiting beamforming spatial multiplexing gains. In this article, we describe the main design concepts when integrating mmWave RANs into 5G systems, considering aspects such as spectrum, architecture, backhauling/fronthauling. The corresponding RRM challenges, extended functionalities RAN, splits are addressed. Finally, based...

Vehicle-to-vehicle (V2V) channels exhibit unique properties due to the highly dynamic environment and low elevation of antennas at both ends link. Of particular importance for behavior V2V channels, consequent reliability communication link, is severity dynamics blockage line-of-sight other multipath components (MPCs). The characteristics become more important as carrier frequency increases, ability signal penetrate through objects diminishes. To characterize effects vehicle blockage, we...

This paper focuses on capabilities enabled by 5G connectivity in the cooperative, connected and autonomous cars, elaborates two technical enablers. One of enablers consists a beamformed broadcast/multicast technology that builds adaptive robust beam management techniques at air interface. The other proposed component aims to improve end-to-end architectural design networks enable efficient broadcast multicast transmissions for vehicle-to-anything services. Finally, key results components are...

Frequency bands above 6 GHz are being considered for future 5G wireless systems because of the larger bandwidth availability and smaller wavelength, which can ease implementation high-throughput massive MIMO schemes. However, great challenges around corner at each level, including achievement a thorough multi-dimensional characterization mm-wave radio channel, represents base realization reliable high-performance interfaces system architectures. The main properties indoor channel 70 GHz,...

This paper presents 70-77 GHz wideband channel characteristics of delay, spatial, and polarimetric domains for small office entrance hall scenarios. Based on measured multidimensional power spectra directions (i.e., azimuth elevation) departure arrival, multipath clusters were detected using the K-means, threshold-based, Gaussian-mixture-model clustering algorithms. The spatial positions clusters, including first- last-hop scatterers, are determined a measurement-based ray tracer method. Our...

The second-order statistics of indoor directional channels are investigated using millimeter-wave (mmWave) band (30.4–37.1 GHz) ultrawideband (UWB) channel measurements. Considering two main mmWave system assumptions (high bandwidth and high beamforming gain), this paper aims to investigate the validity Rayleigh–Rice fading models for cluster envelope. results from study compared an already well-studied lower frequency FCC (3.4–10.1 GHz). During measurements, only selective objects (emulated...

Millimeter-wave (mm-wave) communications plays an important role in future cellular networks because of the vast amount spectrum available underutilized mm-wave frequency bands. To overcome huge free space omnidirectional path loss those bands, deployment a very large number antenna elements at base station is crucial. The complexity, power consumption, and costs resulting from can be reduced by limiting RF chains. This leads to hybrid precoding combining, which, contrast traditional fully...

The vision of multi Gbit/s data rates in future mobile networks requires the change to millimeter wave (mm-Wave) frequencies for increasing bandwidth. As a consequence, new technologies have be deployed tackle drawbacks higher frequency bands, e.g. increased path loss. Development and verification those novel required an understanding propagation effects at mm-Wave which enabled by channel sounding measurements analysis. Due variety considered bands necessity spatial resolved testing...

This paper provides an overview and preliminary comparison of several multi-carrier single-carrier waveforms that are potential candidates for future 5G mobile radio communications above 6 GHz. The assessed primarily based on the established known results as well recent findings keeping in view design requirements relevant to using frequencies GHz, especially millimeter wave frequencies. Key Performance Indicators degrees freedom different their applications mm-wave discussed. Certain...

mmMAGIC (Millimetre-Wave Based Mobile Radio Access Network for Fifth Generation Integrated Communications) is an EU funded 5G-PPP project, whose overall objective to design and pre-develop a mobile radio access technology (RAT) operating in the 6–100 GHz range, capable of impacting standards other relevant fora. The focus project on extreme Broadband, which expected drive 5G requirements massive increase capacity data-rates. This paper elaborates some key research areas such as:...

The availability of abundant spectrum makes millimeter wave (mm-wave) a prominent candidate technology for the next generation cellular networks. Highly directional transmission is essential exploitation mm-wave bands to compensate high propagation loss. transmission, nevertheless, necessitates specific design initial cell discovery, as conventional omni-directional broadcasting may fail in delivering discovery information. To address this issue, paper provides an analytical framework...

According to the current prospect of allocating next generation wireless systems in underutilized millimeter frequency bands, a thorough characterization mm-wave propagation represents pressing necessity. In this work, an “item level” radiowave at 70 GHz is carried out. The scattering properties several, different objects commonly present indoor environment are investigated by means measurements out anechoic chamber. measured data have been also exploited tune some parameters 3D ray tracing model.

Owing to the limitation in bandwidth of currently used frequency bands, future fifth generation (5G) mobile networks will need operate at higher frequencies. However, one important step research activities for next is broadband fully polarimetric analysis multipath propagation dynamic single and multiuser scenarios under time-variant shadowing environments millimetre- wave (mm-wave) channels. This paper presents a channel sounding campaign 70 GHz an urban outdoor scenario focusing on...

Abstract In this paper, an orthogonal frequency-division multiplexing (OFDM) waveform radar sensing approach is demonstrated based on field measurements at C-band. We demonstrate a concept that the exploitation of typical wireless communication transmissions to perform passive, distributed sensing. Our OFDM operates in modulation symbol domain and can be well integrated into existing receivers. The measurement setup signal processing steps for are described. results show used detect localize...

Industry 4.0 is the scenario in which 5G and beyond networks are expected to show all their potential. However, while propagation at sub-6 GHz has been widely investigated industry environments, mm-waves channel modelling those scenarios still under early research. Therefore, we introduce novel simultaneous multiband ultra-wideband measurements 6.75 30 LOS NLOS with RX below above clutter level. This unique set-up allows a direct comparison between mm-wave channel. Results have shown larger...

By allowing a large number of links to be simultaneously transmitted, directional antenna arrays with beamforming have been envisioned as promising candidate reach unprecedented levels spatial isolation. To achieve the high efficiency reuse in improving system performance, an optimization problem that maximizes achievable data rate multihop heterogeneous network, which incorporates concept integrated access and backhaul supports both downlink uplink transmissions on links, is formulated. The...

Double-directional, ultra wideband dual-polarized channel measurements at 70 GHz have been carried out in a small-office environment. The aim of these is to study the temporal, directional, and polarization properties for modelling purposes future wireless communication systems mm-waves. A highly deterministic behaviour environment has identified, as well limitations only parameterizing models WINNER new mm-wave models.

A wideband, fully polarimetric and directional radio channel sounding campaign conducted at 70 GHz is presented. Measurement site was chosen as an entrance hall, featuring femtocell size. Transmitter receiver were placed according to access-point scenario. Initial large-scale parameters like excess-delay, delay-spread angular spread are derived for characterisation. It not the paper's goal describe a new model. The main focus identification of propagation effects characteristics, which have...

Due to the extremely high user density in in-flight entertainment (IFE) systems, required sum data rate is order of several Gbit/s, which can not be provided by existing standard wireless systems. To achieve such rates, 60 GHz frequency band very well suited due its specific advantages. In this paper, a design concept for cellular-based IFE system presented. Furthermore, results simulations using measured in-cabin channels are shown.

A wireless channel is always composed of both deterministic and stochastic multi-path components. high Rician K-factor increases the contribution components, thereby reducing significance parts a channel. This paper focus at investigative analysis fading depth to analyze behavior under certain bandwidth. In this paper, 4 different propagation setups have been studied including LOS, reflections from black board wall are considered due their surface roughness double bounce surfaces. It has...

The effects of oscillator phase noises (PNs) on multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems are studied. It is shown that PNs common oscillators at the transmitter and receiver have same influence performance (single-stream) beamforming MIMO-OFDM systems, yet different influences spatial with singular value decomposition (SVD) based precoding/decoding. When each antenna equipped an independent oscillator, as well systems. Specifically, PN...

DFT-s-OFDM/Discrete Fourier Transform (DFT) spread Orthogonal Frequency Division Multiplexing (OFDM) is a waveform adopted in the fourth and fifth generation of mobile communication standards, aiming to combine merits Cyclic Prefix (CP) OFDM with low Peak-to-Average-Power Ratio (PAPR). Due growing interest geometric probabilistic shaping signal constellation, it important study impact on power distribution corresponding signal. In this work, exact approximate analytic expressions are derived...