Analysis of In-Room mm-Wave Propagation: Directional Channel Measurements and Ray Tracing Simulations

Fuschini, Franco; Häfner, Stephan; Zoli, Marco; Müller, Robert; Vitucci, Enrico M.; Dupleich, Diego; Barbiroli, Marina; Luo, Jian; Schulz, E.; Degli-Esposti, Vittorio; Thomä, Reiner S.

doi:10.1007/s10762-017-0366-1

Cited by 40 publications

(22 citation statements)

References 32 publications

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“…When TX and RX are facing each other at LOS, the polarisation is co-polarised and the E-field is orthogonal to the floor. In MC1, the essential mechanical adaptation to the state-of-the-art directional channel sounding set-up [70,71] is that the elevationover-azimuth positioner is mounted on an xy-positioning stage. Thereby, we compensate for all linear translations caused by rotations and keep the phase center of the horn antenna always at the same (x, y) coordinate, see Fig.…”

Section: Validation Of the Chosen Modelmentioning

confidence: 99%

Better than Rician: modelling millimetre wave channels as two-wave with diffuse power

Zöchmann

Caban

Mecklenbräuker

et al. 2019

J Wireless Com Network

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This contribution provides experimental evidence for the two-wave with diffuse power (TWDP) fading model. We have conducted two indoor millimetre wave measurement campaigns with directive horn antennas at both link ends. One horn antenna is mounted in a corner of our laboratory, while the other is steerable and scans azimuth and elevation. Our first measurement campaign is based on scalar network analysis with 7 GHz of bandwidth. Our second measurement campaign obtains magnitude and phase information, additionally sampled directionally at several positions in space. We apply Akaike's information criterion to decide whether Rician fading sufficiently explains the data or the generalized TWDP fading model is necessary. Our results indicate that the TWDP fading hypothesis is favoured over Rician fading in situations where the steerable antenna is pointing towards reflecting objects or is slightly misaligned at line-ofsight. We demonstrate TWDP fading in several different domains, namely, frequency, space, and time.few with dielectric lenses [21][22][23]. When the link-quality depends so much on the achieved beam-forming gain, antennas must be considered as part of the wireless channel again. Small-scale fading is then influenced by the antenna.According to Durgin [24, p. 137], "The use of directive antennas or arrays at a receiver, for example, amplifies several of the strongest multipath waves that arrive in one particular direction while attenuating the remaining waves. This effectively increases the ratio of specular to nonspecular received power, turning a Rayleigh or Rician fading channel into a TWDP fading channel." The mentioned two-wave with diffuse power (TWDP) fading channel describes this spatial filtering effect by two non-fluctuating receive signals together with many smaller diffuse components.

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Section: Validation Of the Chosen Modelmentioning

confidence: 99%

Better than Rician: modelling millimetre wave channels as two-wave with diffuse power

Zöchmann

Caban

Mecklenbräuker

et al. 2019

J Wireless Com Network

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“…Another indoor 3D scenario where simulation is performed using RL techniques is shown in [ 27 ], where they have close agreement with measurements for delay spread parameter. In [ 28 , 29 ], the wireless directional propagation channel in an indoor 70 GHz scenario is investigated, with the assistance of RT simulations and measurements. Results such as the angular and temporal dispersion parameters are some of the analyzed results presented, showing good precision.…”

Section: Introductionmentioning

confidence: 99%

Fifth-Generation (5G) mmWave Spatial Channel Characterization for Urban Environments’ System Analysis

Azpilicueta

López-Iturri

Zuñiga-Mejia

et al. 2020

Sensors

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In this work, the channel characterization in terms of large-scale propagation, small-scale propagation, statistical and interference analysis of Fifth-Generation (5G) Millimeter Wave (mmWave) bands for wireless networks for 28, 30 and 60 GHz is presented in both an outdoor urban complex scenario and an indoor scenario, in order to consider a multi-functional, large node-density 5G network operation. An in-house deterministic Three-Dimensional Ray-Launching (3D-RL) code has been used for that purpose, considering all the material properties of the obstacles within the scenario at the frequency under analysis, with the aid of purpose-specific implemented mmWave simulation modules. Different beamforming radiation patterns of the transmitter antenna have been considered, emulating a 5G system operation. Spatial interference analysis as well as time domain characteristics have been retrieved as a function of node location and configuration.

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“…Several works are carried out in this direction. Some works use the ray tracing to evaluate reflected rays [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Electric Field Calculation for Mobile Communication Coverage in Buildings and Indoor Areas by Using the Method of Auxiliary Sources

et al. 2020

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In this article, the diffraction of the electromagnetic wave by the building with two rooms is considered. e rooms have doors and windows with lossy dielectric walls. e electromagnetic properties of the building as an opened coupled resonator system are investigated at different source locations and several frequencies including 5G band. e problem is solved by using the Method of Auxiliary Sources. e near electric field distributions are calculated and analyzed.

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Analysis of In-Room mm-Wave Propagation: Directional Channel Measurements and Ray Tracing Simulations

Cited by 40 publications

References 32 publications

Better than Rician: modelling millimetre wave channels as two-wave with diffuse power

Better than Rician: modelling millimetre wave channels as two-wave with diffuse power

Fifth-Generation (5G) mmWave Spatial Channel Characterization for Urban Environments’ System Analysis

The Electric Field Calculation for Mobile Communication Coverage in Buildings and Indoor Areas by Using the Method of Auxiliary Sources

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