Uniform Analysis of Multipath Components From Various Scenarios With Time-Domain Channel Sounding at 300GHz

Eckhardt, Johannes M.; Schultze, Alper; Askar, Ramez; Doeker, Tobias; Peter, Michael; Keusgen, Wilhelm; Kuerner, Thomas

doi:10.1109/ojap.2023.3263597

Cited by 9 publications

(8 citation statements)

References 28 publications

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“…The local oscillator (LO) is created by a chain of frequency doublers and amplifiers making use of the common clock signal in order to assure a coherent phase information. More details are provided in [18], [19].…”

Section: B Measurement Equipment and Post-processingmentioning

confidence: 99%

“…For time-invariant measurements without rotational scanning, the combination yields in a one-dimensional space that contains the single CIR as a function of the delay. For double-directional measurements containing information on angle of departure (AoD) and angle of arrival (AoA) the three-dimensional space AoD×AoA×Delay is obtained [18]. On the basis of these sets of CIRs, the MPCs are extracted, by a local maxima search of the amplitude.…”

Section: B Measurement Equipment and Post-processingmentioning

confidence: 99%

“…Table 1 summarizes the resulting distance between TX and RX d, the temperature in the corresponding aisle ϑ TX , ϑ RX , and the polarization on the transmitted wave. The exact positions of TX and RX, r TX , r RX , are provided in the research data set [15]. The TX's and RX's positions are also depicted in a detail of the floor plan in Fig.…”

Section: A Measurement Setupmentioning

confidence: 99%

“…• The first open-access research data of measured doubledirectional complex channel impulse responses (CIRs) at 300 GHz is provided [15].…”

Section: Introductionmentioning

confidence: 99%

“…The data presented is the basis for a detailed analysis of the propagation characteristics with a focus on multipath propagation and constitute the most comprehensive measurement series in a specific THz communications use case to date. In addition, more than 18250 calibrated CIR and the corresponding extracted MPCs are published as research data, made available for the research community [15]. The rest of the paper is organized as follows: Section II introduces the environment, measurement equipment, and methodology, which are relevant to all subsequent sections.…”

Section: Introductionmentioning

confidence: 99%

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Channel Measurements at 300 GHz for Low Terahertz Links in a Data Center

Eckhardt,

Doeker,

Kürner

2024

IEEE Open J. Antennas Propag.

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This article presents comprehensive double-directional channel measurements with timedomain channel sounding at 300 GHz that characterize the channel of wireless links in a data center. The channels are classified into three scenario-depended use cases and individually analyzed providing channel parameters as a function of the required signal-to-noise ratio of the prospective communication system. The spatial and temporal analysis of the channel reveals relevant propagation effects such as the influence of scattering and derives relations between the channel parameters of the propagation and the radio channel. The analysis shows that multipath propagation becomes relevant for systems with high signal-to-noise ratio requirements despite high-gain directional antennas. A first order approximation of relevant propagation effects complements the analysis. The measurement data of the whole measurement campaign with 18250 calibrated impulse responses including all meta data is published so that the research community has a collective benefit. THz, channel, channel sounding, data center, top-of-rack, multipath propagation, delay spread. INDEX TERMS

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Section: B Measurement Equipment and Post-processingmentioning

confidence: 99%

Section: B Measurement Equipment and Post-processingmentioning

confidence: 99%

Section: A Measurement Setupmentioning

confidence: 99%

“…• The first open-access research data of measured doubledirectional complex channel impulse responses (CIRs) at 300 GHz is provided [15].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Channel Measurements at 300 GHz for Low Terahertz Links in a Data Center

Eckhardt,

Doeker,

Kürner

2024

IEEE Open J. Antennas Propag.

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Indoor Channel Measurement at 300 GHz and Comparison of Signal Propagation With 60 GHz

Kim,

Ghosh,

Takahashi

et al. 2023

IEEE Access

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In this paper, a newly developed 300 GHz channel sounder is presented followed by a detailed description of test measurements and the subsequent results obtained to validate its working. An elucidation of the high-resolution double-directional channel measurement in a typical conference room scenario precedes the comparison of the results obtained for the current campaign to that obtained from an earlier campaign at 60 GHz for a similar setup. It is observed that a similar number of clusters for both the bands under investigation for all the transmitter (Tx) and receiver (Rx) positions are obtained from the generated power spectra. Any deviation is theorized to be caused either due to the usage of lower measurement bandwidth in the 60 GHz campaign or due to limited elevation expanse in the 300 GHz measurement. To identify the interacting objects (IOs) causing the clusters, environment-embedded angular power spectra (APS) and ray tracing simulations are used. The large-scale parameters (LSPs) are also evaluated for both campaigns. It is observed that signal propagation in the terahertz (THz) band is dominated more by the line-of-sight (LoS) path compared to the millimeter wave (mm-wave) band (below 100 GHz). The results are also compared with other similar results from the literature. INDEX TERMSChannel sounding, Channel measurement, Terahertz (THz), Millimeter wave (mm-wave), Clustering, Multipath component (MPC).

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Dual-Polarized Sub-THz Channel Measurements in D-Band in an Industrial Environment

Schultze,

Schmieder,

Askar

et al. 2024

2024 Joint European Conference on Networks and Communications &Amp;amp; 6G Summit (EuCNC/6G Summit)

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Uniform Analysis of Multipath Components From Various Scenarios With Time-Domain Channel Sounding at 300GHz

Abstract: This work was supported by the Federal Ministry of Education and Research of Germany in the program of "Souver än. Digital. Vernetzt."Joint project 6G-RIC, project identification number: 16KISK020K and 16KISK031.

Cited by 9 publications

References 28 publications

Channel Measurements at 300 GHz for Low Terahertz Links in a Data Center

Channel Measurements at 300 GHz for Low Terahertz Links in a Data Center

Indoor Channel Measurement at 300 GHz and Comparison of Signal Propagation With 60 GHz

Dual-Polarized Sub-THz Channel Measurements in D-Band in an Industrial Environment

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