Atmospheric Attenuation of the Terahertz Wireless Networks

Tamošiūnaitė, M.; Tamošiūnas, S.; Zilinskas, Mindaugas; Valušis, Gintaras

doi:10.5772/intechopen.72205

Cited by 14 publications

(4 citation statements)

References 19 publications

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“…Figure 2 shows the atmospheric attenuation of electromagnetic waves. THz frequency attenuates higher than the microwave spectrum in the atmospheric environment [16]. The attenuation occurs due to gas molecules, rainfall, snow or fog [17].…”

Section: Methodsmentioning

confidence: 99%

Evaluation of Direct Terahertz Radiation on Prospective Communication Applications

Dzakwan Widyo Pangestu,

Catur Apriono

2023

IJECBE

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The continuous development of information and communication technology has brought rapid changes, especially developments in cellular technology, starting with 1G and reaching the fifth development in 2020, 5G. This development continues, as evidenced by the start of 6G technology development in early 2020. The Terahertz (THz) spectrum, which has not been used optimally so far for communication technologies, is one candidate to support the next cellular technology developments. THz Waves offers far wider bandwidth than the existing technologies. Apart from the advantages of THz wave radiation, this research studies THz wave radiation intensity and its potential for communication. By calculating the Atmospheric Attenuation, FSPL and considering the minimum received power of user equipment (UE), THz wave radiation characteristics will be more optimal for use less than 500 meters at 0.1 THz and less than 100 meters at 3 THz. The highest Power density of THz radiation is 7.99 × 10-11 Watt/m2 when using 0.1 THz as frequency and a power transmitter of 10 Watts. The results show that exposure to THz waves in communication applications is safe and acceptable for practical communication use.

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Section: Methodsmentioning

confidence: 99%

Evaluation of Direct Terahertz Radiation on Prospective Communication Applications

Dzakwan Widyo Pangestu,

Catur Apriono

2023

IJECBE

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“…Atmospheric attenuation is due to the energy absorption by the atmospheric molecules. Since some excited molecules vibrate with the certain frequency, a portion of the EM energy is transformed into kinetic energy [55]. The major gaseous molecules at THz band are the oxygen and the water vapor.…”

Section: Propagation Aspect --Meteorological Impactmentioning

confidence: 99%

Towards 6G: Paradigm of realistic terahertz channel modeling

Guan

et al. 2021

China Commun.

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Terahertz (THz) communications are envisioned as a key technology for the sixth-generation wireless communication system (6G). However, it is not practical to perform large-scale channel measurements with high degrees of freedom at THz frequency band. This makes empirical or stochastic modeling approaches relying on measurements no longer stand. In order to break through the bottleneck of scarce fulldimensional channel sounding measurements, this paper presents a novel paradigm for THz channel modeling towards 6G. With the core of high-performance ray tracing (RT), the presented paradigm requires merely quite limited channel sounding to calibrate the geometry and material electromagnetic (EM) properties of the three-dimensional (3D) environment model in the target scenarios. Then, through extensive RT simulations, the parameters extracted from RT simulations can be fed into either ray-based novel stochastic channel models or cluster-based standard channel model families. Verified by RT simulations, these models can generate realistic channels that are valuable for the design and evaluation of THz systems. Representing two ends of 6G THz use cases from microscopy to macroscopy, case studies are made for close-proximity communications, wireless connections on a desktop, and smart rail mobility, respectively. Last but not least, new concerns on channel modeling resulting from distinguishing features of THz wave are discussed regarding propagation, antenna array, and device aspects, re-

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“…The Shannon formula shows that it is much easier to get a larger capacity of a channel increasing the bandwidth than by an increase of the signal-to-noise ratio. Attenuation related to the atmosphere [5] may be a limitation of THz outdoor links and that aspect will be discussed elsewhere.…”

Section: Bandwidthmentioning

confidence: 99%

Opto-Electronics Review

Marczewski

2020

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The paper presents a comprehensive look at the perspectives on the use of THz in digital communication systems. The publication aims to focus on arguments that justify a significant increase in the frequency of radio links and their integration with fibre-based networks. Comparison of THz links with their microwave and optical counterparts is discussed from basic physical limitations to technological constraints. Main attention is paid to the available channel capacity resulting from its bandwidth and signal-to-noise ratio. The short final discussion is about technology platforms that seem to be crucial to the availability of suitable THz sources. According to the author, the biggest advantage of using bands in the range of several hundred GHz for a digital data transmission is their use for mobile communication over short distances, as well as for broadband indoor links. However, these applications require a development of compact electronic THz sources with low noise and power reaching single watts. This is beyond the range of the most popular silicon-based technology platform, although a significant progress can be expected with the development of technologies based on wide bandgap semiconductors. Fibre optic connections remain the unquestioned leader in communication over long distances and permanent links.

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Atmospheric Attenuation of the Terahertz Wireless Networks

Cited by 14 publications

References 19 publications

Evaluation of Direct Terahertz Radiation on Prospective Communication Applications

Evaluation of Direct Terahertz Radiation on Prospective Communication Applications

Towards 6G: Paradigm of realistic terahertz channel modeling

Opto-Electronics Review

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