THz Measurements, Antennas, and Simulations: From the Past to the Future

Sheikh, Fawad; Prokscha, Andreas; Eckhardt, Johannes M.; Doeker, Tobias; Abbasi, Naveed A.; Gomez-Ponce, Jorge; Sievert, Benedikt; Svejda, Jan Taro; Rennings, Andreas; Barowski, Jan; Schulz, Christian; Rolfes, Ilona; Erni, Daniel; Molisch, Andreas F.; Kuerner, Thomas; Kaiser, Thomas

doi:10.1109/jmw.2022.3216210

Cited by 13 publications

(6 citation statements)

References 153 publications

(170 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using a VNA-based frequency domain channel sounder operating between 145 to 146 GHz, authors in [21], [23] carried out channel measurements up to 100 m in urban environments on the University of Southern California-Los Angeles campus. They concluded that device-to-device communication is feasible at sub-THz frequencies in LOS and NLOS conditions [24]. Authors in [25] also employed a VNA-based channel sounder for measuring wireless links up to 65 m on the open floor of the Sello shopping mall in Espoo, Finland, for comparing the channels at 28 and 140 GHz, and found high correlation between spatio-temporal statistics describing the radio propagation behavior at the two frequencies.…”

Section: Introductionmentioning

confidence: 99%

Radio Propagation Measurements and Statistical Channel Models for Outdoor Urban Microcells in Open Squares and Streets at 142, 73, and 28 GHz

Shakya,

Ju,

Kanhere

et al. 2024

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

A comprehensive understanding of outdoor urban radio propagation at mmWave and sub-THz frequencies is crucial for enabling novel applications such as wireless cognition, precise position-location, and sensing. This paper summarizes extensive measurements and statistical analysis of outdoor radio propagation data collected in New York City between 2012 and 2021 to formulate a multi-band empirical 3-D statistical channel model (SCM) for outdoor urban open squares and streets. Path loss models and SCMs are derived from over 21000 power delay profiles (PDP) measured in Brooklyn and Manhattan. Analysis of multipath components in PDPs reveal underlying statistical distributions for wireless channel parameters, including number of time-clusters (TC), subpaths in TCs, delays and powers of TCs and subpaths, and spatial-cluster directions. Observations at 142 GHz suggest a sparse channel as subpaths in TCs are exponentially distributed with narrower spread spatial-clusters and higher Ricean K-factor, unlike uniform distributions at 28 and 73 GHz. The proposed SCMs at 142, 73, and 28 GHz extend the open-source NYUSIM channel simulator into sub-THz bands up to 150 GHz. The SCMs can aid in designing modems, antenna arrays, beamforming, and spatial multiplexing approaches, while providing an empirical baseline for propagation simulation and prediction tools, such as ray tracers.

show abstract

Section: Introductionmentioning

confidence: 99%

Radio Propagation Measurements and Statistical Channel Models for Outdoor Urban Microcells in Open Squares and Streets at 142, 73, and 28 GHz

Shakya,

Ju,

Kanhere

et al. 2024

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

show abstract

“…For example, the 3GPP model defines the office environment as the entire office building comprising not only the office spaces themselves but also corridors, conference rooms, halls etc [1,9]. For the mmWave (28,38,71, and 82 GHz) measurements, actual omnidirectional antennas were used, whereas rotating horn antennas were used for the sub-THz (159 GHz) measurements. The sub-THz measurements were post-processed to derive omnidirectional characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…Sporadic measurement and/or simulation at the sub-THz bands had been reported [15][16][17][18], besides rain and atmospheric attenuation [7,[19][20][21][22][23][24]. Lately, numerous measurement reports based on electromagnetic waves have been published, associated with IEEE 802.15.3d [25], 5G beyond and/or 6G (See [26][27][28][29] and references therein for a full survey). Among them, we list some relevant to indoor office measurements at the sub-THz band.…”

Section: Introductionmentioning

confidence: 99%

Measurement‐based omnidirectional millimetre‐wave and sub‐THz propagation analysis in a large cubicle office environment

Lee

Park

Kim

et al. 2023

IET Microwaves Antenna & Prop

View full text Add to dashboard Cite

For 5G beyond and/or 6G mobile services, a new spectrum at frequencies above 100 GHz has received great attention lately. To characterise the similarities and the differences between frequencies below 100 GHz and above 100 GHz, this paper provides analyses of multi‐frequency propagation characteristics based on wideband measurements at 28, 38, 71, 82, and 159 GHz, with an emphasis on the sub‐THz (i.e. the 159 GHz) propagation characteristics. All the frequency measurements were conducted in the same cubicle office room environment by locating the transmitter and the receiver at the same positions. The measurement results show that the path loss and the shadow fading characteristics do not exhibit significant differences depending on the frequency range from 28 to 159 GHz. However, the delay spread shows a generally decreasing trend as the frequency increases. Additionally, angular domain analyses were conducted with the 159 GHz measurements.

show abstract

“…State-of-the-art investigations of THz communication systems include-among others-several channel measurements and modelling approaches [4][5][6][7][8][9][10][12][13][14], material characterisation [15], and surveys about challenges and opportunities [1,16,17]. Besides, device discovery for THz communication systems has been investigated for some time and different approaches were presented so far.…”

Section: Introductionmentioning

confidence: 99%

A ray tracing‐assisted device discovery approach for low terahertz communications

Doeker

Boban

Kuerner

2023

IET Microwaves Antenna & Prop

Self Cite

View full text Add to dashboard Cite

Future wireless communication systems at low terahertz frequencies (0.1-1 THz) suffer from high attenuation losses, and therefore, highly directive antennas are foreseen. As highly directive antennas have narrow beams, the alignment of the transmitter and the receiver is a crucial step in such systems. A device discovery approach using results from ray tracing (RT) combined with an iterative fine tuning is presented by the authors. A summary of previous investigations emphasises the benefits in terms of performance compared to an iterative approach. Furthermore, it indicates strong dependency of the RT output on the accuracy of the input data, that is, the environmental model. The authors extend the previous works by evaluating the impact of antenna characteristics. It is shown that the sidelobes lead to an error in the final alignment due to the superposition of the received power via multipath components, and equations to calculate the maximum error are given. Besides, the impact is evaluated with respect to sidelobe suppression. Here, equations to calculate the maximum error are given and it is shown that the sidelobes do not affect the alignment if the gain of the sidelobe is more than 30 dB lower than that of the mainlobe. K E Y W O R D S antenna design, device discovery, indoor communication, millimetre wave communication, multipath channels, ray tracing, terahertz waves This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

THz Measurements, Antennas, and Simulations: From the Past to the Future

Cited by 13 publications

References 153 publications

Radio Propagation Measurements and Statistical Channel Models for Outdoor Urban Microcells in Open Squares and Streets at 142, 73, and 28 GHz

Radio Propagation Measurements and Statistical Channel Models for Outdoor Urban Microcells in Open Squares and Streets at 142, 73, and 28 GHz

Measurement‐based omnidirectional millimetre‐wave and sub‐THz propagation analysis in a large cubicle office environment

A ray tracing‐assisted device discovery approach for low terahertz communications

Contact Info

Product

Resources

About