Ultra broadband indoor channel measurements and calibrated ray tracing propagation modeling at THz frequencies

Priebe, Sebastian; Kannicht, M.; Jacob, Mohan V.; Kürner, Thomas

doi:10.1109/jcn.2013.000103

Cited by 139 publications

(97 citation statements)

References 21 publications

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“…For performance comparison, we apply our resource allocation scheme on the state-of-the-art millimeter wave systems at 0.3 [30] and 0.06 THz [31]. In particular, the transmission at 0.3 THz occupies the fixed 50 GHz BW, while the transmission at 60 GHz uses the fixed 10 GHz BW.…”

Section: Performance Evaluationmentioning

confidence: 99%

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Distance-Aware Bandwidth-Adaptive Resource Allocation for Wireless Systems in the Terahertz Band

Han

Akyildiz

2016

IEEE Trans. THz Sci. Technol.

124

119

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Terahertz (0.06-10 THz) band communication is envisioned as a key technology to satisfy the increasing demand for ultrahigh-speed wireless links. In this paper, a distance-aware bandwidth-adaptive resource allocation scheme is developed for THz band communication networks, which has the objective to improve the distance. The proposed scheme captures the unique channel peculiarities including the relationship between the distance and the bandwidth, and strategically utilizes the spectrum to enable multiple ultrahigh-speed links. Based on the developed scheme, the subwindows of the THz spectrum, the modulations, and the transmit power are adaptively allocated, for both singleuser and multiuser communications. The numerical results show that the developed resource allocation scheme improves the distances and exploitation of the THz spectrum significantly. Specifically, 10 Gb/s can be supported at 4 m in the multipath channel, while 100 Gb/s is achieved up to 21 m in the line-of-sight transmission with the use of 20 dB gain antennas. Furthermore, in the multiuser network, 14 10 Gb/s links can be supported simultaneously in the multipath channel. With the use of 20 dB gain antennas, 13 100 Gb/s links can be supported at the same time. Moreover, the developed resource allocation scheme outperforms the existing millimeter-wave systems and the nonadaptive scheme. This paper achieves the design objective and contributes to enable multiple ultrahigh-speed links in the THz band communication network.

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Section: Performance Evaluationmentioning

confidence: 99%

“…In particular, 50 subwindows are assigned for each user, as suggested in [30]. The equal transmit power (i.e., P u = P Tx /50) and the fixed 16-QAM modulation (i.e., k fixed = 4) that was designed for the THz system [32] are used on each subwindow.…”

Section: B Multiuser Thz Band Communication Networkmentioning

confidence: 99%

Distance-Aware Bandwidth-Adaptive Resource Allocation for Wireless Systems in the Terahertz Band

Han

Akyildiz

2016

IEEE Trans. THz Sci. Technol.

124

119

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show abstract

“…Generally, RT simulation starts with determining the materials which constitute the scenario; then and scattering parameters of these selected materials are acquired from checking literatures (e.g., ITU-R recommendations [25]), performing dedicated EM measurement [26], or derivation from channel measured data [27]. However, apart from dedicated EM measurement, these methods are less than ideal as and scattering parameters of a material vary in different scenarios and conditions (e.g., humidity of environment and density of material).…”

Section: Em and Scattering Parameters Acquisition Of The Materialmentioning

confidence: 99%

On the Feasibility of High Speed Railway mmWave Channels in Tunnel Scenario

et al. 2017

Wireless Communications and Mobile Computing

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Rail traffic is widely acknowledged as an efficient and green transportation pattern and its evolution attracts a lot of attention. However, the key point of the evolution is how to develop the railway services from traditional handling of the critical signaling applications only to high data rate applications, such as real-time videos for surveillance and entertainments. The promising method is trying to use millimeter wave which includes dozens of GHz bandwidths to bridge the high rate demand and frequency shortage. In this paper, the channel characteristics in an arched railway tunnel are investigated owing to their significance of designing reliable communication systems. Meantime, as millimeter wave suffers from higher propagation loss, directional antenna is widely accepted for designing the communication system. The specific changes that directional antenna brings to the radio channel are studied and compared to the performances of omnidirectional antenna. Note that the study is based on enhanced wide-band ray tracing tool where the electromagnetic and scattering parameters of the main materials of the tunnel are measured and fitted with predicting models.

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“…It is obvious that the medium size device cannot be simulated using the method presented in this paper. On the other hand, it has been shown that ray tracing is able to achieve reasonably accurate channel characteristics when applied to indoor environments for a carrier frequency of 300 GHz [9]. The 8th European Conference on Antennas and Propagation (EuCAP 2014) However, ray-optical approaches are based on a couple of approximations and assumptions.…”

Section: B Propagation Along Surfacesmentioning

confidence: 99%

Time-Domain propagation investigations for Terahertz intra-device communications

Fricke

Homann

Kürner

2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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Electromagnetic wave propagation modeling for intra-device communications exhibits some peculiarities in comparison to outdoor propagation modeling. Since the environment comprises many features of the order of the wavelength and the antennas are often placed in the vicinity of these objects, the use of widely applied high-frequency approximations such as ray tracing reaches its limits. In this paper, a conceptual analysis of propagation effects arising from the mutual interaction between the antennas and the surrounding geometry is presented. The analysis is based on Finite Difference Time Domain (FDTD) calculations. The paper is concluded by an analysis of full-wave methods vs. ray tracing in intra-device scenarios at THz frequencies.

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Ultra broadband indoor channel measurements and calibrated ray tracing propagation modeling at THz frequencies

Cited by 139 publications

References 21 publications

Distance-Aware Bandwidth-Adaptive Resource Allocation for Wireless Systems in the Terahertz Band

Distance-Aware Bandwidth-Adaptive Resource Allocation for Wireless Systems in the Terahertz Band

On the Feasibility of High Speed Railway mmWave Channels in Tunnel Scenario

Time-Domain propagation investigations for Terahertz intra-device communications

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