Directional Sub-THz Antenna-Channel Modelling for Indoor Scenarios

Beelde, Brecht De; David, Paul A.; Tanghe, Emmeric; Joseph, Wout

doi:10.23919/eucap51087.2021.9411207

Cited by 10 publications

(8 citation statements)

References 13 publications

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“…For the indoor channel measurement campaign we use the channel sounder from Fig. 1 which is presented and validated in previous work [9]. A vector network analyzer (VNA) generates a radio frequency source from 9.167 to 14.167 GHz which is upconverted to D-band frequencies using a frequency convertor that consists of a frequency multiplier as well as a harmonic mixer for the downconversion of the measured signal.…”

Section: Methodology a D-band Channel Soundermentioning

confidence: 99%

“…Multiple frequency sweeps are performed and averaged. The measured S 21 scattering parameter is transformed into path loss (PL) via ( 1), with N the number of frequency sweeps, H the measured transfer function, G a the antenna gain and C a correction term based on validation measurements [9].…”

Section: Methodology a D-band Channel Soundermentioning

confidence: 99%

“…We start in Section II with a presentation of the channel sounder, which is validated in previous work [9], and a presentation of the measurement environments and scenarios. In Section III we provide the LOS PL model, followed by the attenuation for an obstructed LOS path and the presentation of reflected NLOS measurements.…”

Section: Introductionmentioning

confidence: 99%

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Indoor Radio Channel Modeling at D-Band Frequencies

Beelde

Tanghe

David

et al. 2022

2022 16th European Conference on Antennas and Propagation (EuCAP)

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This paper presents indoor radio channel measurements and models at D-band frequencies. A Line-of-Sight (LOS) alpha-beta-gamma path loss model is created based on indoor measurements up to 8.5 m in a laboratory and office room, resulting in a floating intercept α of 34.2 dB, PL exponent β 1.9 and frequency dependency γ 1.9. The penetration losses for wood, acrylic, polyvinyl chloride (PVC) and glass are measured, resulting in a respective loss of 8, 3.5, 3 and 12 dB/cm. Furthermore, attenuation due to desk objects obstructing the LOS path is found to range from 3 to 10 dB for one or more universal serial bus (USB) cables, and 8 to 13 dB for a computer keyboard and mouse. A laptop screen completely blocks the LOS path. Therefore, we measured the attenuation of the reflected path when the LOS path is blocked, and conclude that desk objects provide valid fallback paths.

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Section: Methodology a D-band Channel Soundermentioning

confidence: 99%

Section: Methodology a D-band Channel Soundermentioning

confidence: 99%

See 1 more Smart Citation

Indoor Radio Channel Modeling at D-Band Frequencies

Beelde

Tanghe

David

et al. 2022

2022 16th European Conference on Antennas and Propagation (EuCAP)

Self Cite

View full text Add to dashboard Cite

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“…for indoor and outdoor communications systems. The measurement setups, including the measurement distance range and the antenna configurations, of existing studies in both indoor and outdoor scenarios are summarized in Table V and VI, from different groups including Beijing Jiao Tong University (BJTU) [81]- [85], [224], Shanghai Jiao Tong University (SJTU) [58], [225], Georgia Institute of Techonology (GIT) [51], [226], [227], New York University (NYU) [70], [73], [75], [228], Technische Universität Braunschweig (TUBS) [54], [127], [229], University of Southern California (USC) [39], [57], [61]- [63], Aalto University (AU) [37], [64], Technische Universität Ilmenau (TUL) [77], Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBITAK) [230], Durham University (DU) [231], Ghent University (GU) [232], University Grenoble-Alpes (UGA) [233], Heinrich Hertz Institute (HHI) [78]. The channel characteristics established in these studies are discussed in the following parts.…”

Section: A Large-scale and Small-scale Channel Characteristicsmentioning

confidence: 99%

Terahertz Wireless Channels: A Holistic Survey on Measurement, Modeling, and Analysis

Chen¹,

Wang²,

Li³

et al. 2021

Preprint

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Terahertz (THz) communications are envisioned as a key technology for sixth generation (6G) wireless systems. The study of underlying THz wireless propagation channels provides the foundations for the development of reliable THz communication systems and their applications. This article provides a comprehensive overview of the study of THz wireless channels. First, the three most popular THz channel measurement methodologies, namely, frequency-domain channel measurement based on a vector network analyzer (VNA), time-domain channel measurement based on sliding correlation, and time-domain channel measurement based on THz pulses from time-domain spectroscopy (THz-TDS), are introduced and compared. Current channel measurement systems and measurement campaigns are reviewed. Then, existing channel modeling methodologies are categorized into deterministic, stochastic, and hybrid approaches. State-of-the-art THz channel models are analyzed, and the channel simulators that are based on them are introduced. Next, an in-depth review of channel characteristics in the THz band is presented. Finally, open problems and future research directions for research studies on THz wireless channels for 6G are elaborated.

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“…Most of the recent studies focus on the understanding of radio channels at above-100 GHz. Links with short distances in indoor scenarios of less than one meter [2], up to four meters [3], up to eight meters [4] and up to 10 m [5], [6] have been investigated. Meanwhile, longer link distances of above 10 m in indoor and outdoor environments were considered in [7]- [11].…”

Section: Introductionmentioning

confidence: 99%

Double-directional Multipath Data at 140 GHz Derived from Measurement-based Ray-launcher

Guzman

Koivumaki

Haneda

2022

2022 IEEE 95th Vehicular Technology Conference: (VTC2022-Spring)

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The double-directional model of the radio channel is an indispensable tool in the design and evaluation of wireless systems. However, double-directional channel sounding is increasingly more difficult as the carrier frequency increases due to the need to steer narrower antenna beams across azimuth and elevation angles both at transmit (Tx) and receive (Rx) ends, resulting in a huge time duration required for measuring a single Tx-Rx link. To tackle the problem, we utilized a measurementbased ray-launcher (MBRL) to estimate the double-directional path data from single-directional radio channel sounding. The latter performs beam scanning only at one of Tx or Rx ends, allowing us to perform many more Tx-Rx link measurements than double-directional sounding. The MBRL maps multipaths measured from the single-directional channel sounding on a geometry of the measurement site, allowing us to identify the reflection points and angular information of the multipaths that we were not able to measure. Double-directional multipath data covering 12 line-of-sight and 56 non-line-of-sight indoor links at 140 GHz band are the main result of this paper. The data will serve for the design and evaluation of communications links, localization and sensing at 140 GHz.

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Directional Sub-THz Antenna-Channel Modelling for Indoor Scenarios

Cited by 10 publications

References 13 publications

Indoor Radio Channel Modeling at D-Band Frequencies

Indoor Radio Channel Modeling at D-Band Frequencies

Terahertz Wireless Channels: A Holistic Survey on Measurement, Modeling, and Analysis

Double-directional Multipath Data at 140 GHz Derived from Measurement-based Ray-launcher

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