Scattering Analysis for the Modeling of THz Communication Systems

Piesiewicz, Radoslaw; Jansen, Christian; Mittleman, Daniel M.; Kleine‐Ostmann, Thomas; Koch, Martin; Kürner, Thomas

doi:10.1109/tap.2007.908559

Cited by 303 publications

(159 citation statements)

References 13 publications

Supporting

Mentioning

155

Contrasting

Unclassified

Order By: Relevance

“…If we assume a binary modulation (1 bit/photon, such as on-off keying or binary pulse-position modulation, PPM) operating at 100 gigabits/second, the necessary received power is bounded by (5) where is the modulation order (bits/symbol), is the bit rate, is Planck's constant, the speed of light, and the carrier wavelength. Under these idealized conditions we see that the necessary photon-limited receive power is within 20 dB of our THz cases.…”

Section: Comparison-to-optical Linksmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Suen

Fang

Denny

et al. 2015

IEEE Trans. THz Sci. Technol.

View full text Add to dashboard Cite

Abstract-While terahertz (THz) communication systems, operating from 100 GHz to 1 THz, have the potential to exploit wide swaths of unused spectrum for ultra-high bitrate communication, there are significant challenges. Particularly, the strong absorption of water vapor can result in very high atmospheric attenuation. We modeled a ground to geostationary satellite link and found that using large aperture THz stations, patterned after the 12.5 m Atacama Large Microwave Array dish and the 3.5 m Herschel Space Observatory optics, worst 10th percentile data rates in excess of one terabit per second in the THz bands are possible. The key is to site ground stations in dry regions. We locate these by coupling our link model, which selects optimum modulation and carrier bandwidth, with global, high-resolution satellite water vapor measurements. We present detailed maps showing modeled link performance over the surface of the Earth. Smaller apertures on aircraft and balloons are also able to exceed 1 terabit/second due to their location above nearly all water vapor. Compared to free-space optical links, evidence suggests THz systems are superior where fog, cloud cover and clear-air turbulence are of concern.

show abstract

Section: Comparison-to-optical Linksmentioning

confidence: 99%

“…For these reasons, it is commonly believed that spectrum from 100 GHz to 1 THz is only suited for short-range indoor communications. However, this application in itself has difficulties: scattering and reflection by building materials, furnishings and people are significant, and can severely impede non line-of-sight communication [5].…”

mentioning

confidence: 99%

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Suen

Fang

Denny

et al. 2015

IEEE Trans. THz Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…In contrast, as the frequency is increased, the losses from the building materials (walls, objects, and apertures) become larger and the reverberation time decreases. Indeed, the surface roughness plays a major role in this effect at higher frequencies; effect included in the reflection coefficient as follows [18], [19]:…”

Section: A Validation With Laboratorymentioning

confidence: 99%

“…R smooth is the Fresnel reflection coefficient for a smooth surface depending mainly on the surface dielectric properties [19], which in turn depends slightly of the frequency [17] and ρ is the roughness attenuation factor. The roughness attenuation factor decreases as the frequency increases [18], [19].…”

Section: A Validation With Laboratorymentioning

confidence: 99%

See 1 more Smart Citation

Experimental Investigation of Electromagnetic Reverberation Characteristics as a Function of UWB Frequencies

Bamba

Martínez-Inglés

Gaillot

et al. 2015

Antennas Wirel. Propag. Lett.

View full text Add to dashboard Cite

Abstract-The electromagnetic reverberation time characteristics of indoor environments are experimentally investigated from 2 to 10 GHz with bandwidths up to 900 MHz. At a given frequency, the reverberation time is observed to be approximately constant up to 900 MHz. Moreover, the reverberation time decreases for increasing frequencies. Based on the theory of electromagnetic fields in cavities, a model to predict the room quality factor, reverberation time value, and average absorption coefficient is developed for the first time in indoor environments for the investigated frequency range. The validity and robustness of the model is investigated with data obtained for various environments, central frequencies, and bandwidths. The model is applied to another room over the whole 2-10 GHz frequency band and a maximum and average relative error of 22.30% and 8.80% were obtained, respectively, with an rms error of 1.90 ns. Furthermore, good agreement is obtained with measurements reported in the literature with settings falling into the model range; scenarios for which relative errors smaller than 10% were computed. The results demonstrate that this approach is not only an accurate alternative to the reverberation time measurements and computations of indoor environments in the 2-10 GHz frequency range but also a viable route to link propagation mechanisms in indoor scenarios with reverberation chambers.

show abstract

Angular and RMS delay spread modeling in view of THz indoor communication systems

2014

View full text Add to dashboard Cite

Future wireless communication systems will most likely be operated at carrier frequencies above 300 GHz, where the indoor radio channel behaves entirely differently compared to legacy radio communication frequencies. Being highly relevant for system performance evaluations and channel modeling, the spatial as well as the temporal dispersions are studied for a representative office wireless LAN scenario in this paper. Ray tracing serves as the means for the accurate simulation of the THz radio wave propagation. Simple stochastic models are derived to approximate and reproduce the distance-dependent behavior of the angular spread as well as of the RMS delay spread. Based on the results, the maximum symbol rates achievable without any intersymbol interference are quantified and can be shown to reach up to several 100 GSymbols/s provided that highly directive antennas are used.

show abstract

Scattering Analysis for the Modeling of THz Communication Systems

Cited by 303 publications

References 13 publications

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Modeling of Terabit Geostationary Terahertz Satellite Links From Globally Dry Locations

Experimental Investigation of Electromagnetic Reverberation Characteristics as a Function of UWB Frequencies

Angular and RMS delay spread modeling in view of THz indoor communication systems

Contact Info

Product

Resources

About