Characterization for the Vehicle-to-Infrastructure Channel in Urban and Highway Scenarios at the Terahertz Band

Yi, Haofan; Guan, Ke; He, Danping; Ai, Bo; Dou, Jianwu; Kim, Junhyeong

doi:10.1109/access.2019.2953890

Cited by 37 publications

(33 citation statements)

References 36 publications

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“…As shown in Figure 11, the high values imply little depolarization in such a suburban scenario. These values are much larger than the higher frequency band in similar scenarios, such as at 28 GHz [47] and at THz band [48]. Generally speaking, the linear polarization of the antennas is sufficient in such a scenario.…”

Section: Xprmentioning

confidence: 96%

Measurement and Simulation for Vehicle-to-Infrastructure Communications at 3.5 GHz for 5G

Zeng

Xia

et al. 2020

Wireless Communications and Mobile Computing

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Intelligent Transportation System (ITS) is more and more crucial in the modern transportation field, such as the applications of autonomous vehicles, dynamic traffic light sequences, and automatic road enforcement. As the upcoming fifth-generation mobile network (5G) is entering the deployment phase, the idea of cellular vehicle-to-everything (C-V2X) is proposed. The same 5G networks, coming to mobile phones, will also allow vehicles to communicate wirelessly with each other. Hence, 3.5 GHz, as the main sub-6 GHz band licensed in 5G, is focused in our study. In this paper, a comprehensive study on the channel characteristics for vehicle-to-infrastructure (V2I) link at 3.5 GHz frequency band is conducted through channel measurements and ray-tracing (RT) simulations. Firstly, the channel parameters of the V2I link are characterized based on the measurements, including power delay profile (PDP), path loss, root-mean-square (RMS) delay spread, and coherence bandwidth. Then, the measurement-validated RT simulator is utilized to conduct the simulations in order to supplement other channel parameters, in terms of the Ricean K-factor, angular spreads, the cross-correlations of abovementioned parameters, and the autocorrelation of each parameter itself. This work is aimed at helping the researchers understand the channel characteristics of the V2I link at 3.5 GHz and support the link-level and system level design for future vehicular communications of 5G.

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Section: Xprmentioning

confidence: 96%

Measurement and Simulation for Vehicle-to-Infrastructure Communications at 3.5 GHz for 5G

Zeng

Xia

et al. 2020

Wireless Communications and Mobile Computing

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“…Large and small scale fading were investigated along with the Doppler frequency. Moreover, Yi et al [234] examined Vehicle-to-Infrastructure (V2I) channel for urban and highway scenarios at 300 GHz with 8 GHz bandwidth. Measurements were conducted using a SC channel sounder and RT was employed for the analysis of the propagation environment.…”

Section: ) Hst Communicationsmentioning

confidence: 99%

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

Serghiou¹,

Khalily²,

Brown³

et al. 2022

Preprint

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The Terahertz (THz) band (0.1-3.0 THz) spans a great portion of the Radio Frequency (RF) spectrum that is mostly unoccupied and unregulated. It is a potential candidate for application in Sixth-Generation (6G) wireless networks as it has the capabilities of satisfying the high data rate and capacity requirements of future wireless communication systems. Profound knowledge of the propagation channel is crucial in communication systems design which nonetheless, is still at its infancy as channel modeling at THz frequencies has been mostly limited to characterizing fixed Point-to-Point (P2P) scenarios up to 300 GHz. Provided the technology matures enough and models adapt to the distinctive characteristics of the THz wave, future wireless communications systems will enable a plethora of new use cases and applications to be realized in addition to delivering higher spectral efficiencies that would ultimately enhance the Quality-of-Service (QoS) to the end user. In this paper, we provide an insight into THz channel propagation characteristics, measurement capabilities and modeling methods along with recommendations that will aid in the development of future models in the THz band. We survey the most recent and important measurement campaigns and modeling efforts found in literature based on the use cases and system requirements identified. Finally, we discuss the challenges and limitations of measurements and modeling at such high frequencies and contemplate the future research outlook toward realizing the 6G vision.

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“…[248] shows that THz wireless communication can support high-speed mobile railway application scenarios through dynamic beam tracking technology. The channel propagation characteristics of the 300 GHz carrier in the V2I scenario have been explored in [249], which can be used to support the link-level and system-level design for future THz vehicular communications.…”

Section: B Vehicular Connectivitymentioning

confidence: 99%

Prospective Beamforming Technologies for Ultra-Massive MIMO in Terahertz Communications: A Tutorial

Ning¹,

Tian²,

Chen³

et al. 2021

Preprint

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Terahertz (THz) communications with a frequency band 0.1 − 10 THz are envisioned as a promising solution to the future high-speed wireless communication. Although with tens of gigahertz available bandwidth, THz signals suffer from severe freespreading loss and molecular-absorption loss, which limit the wireless transmission distance. To compensate the propagation loss, the ultra-massive multiple-input-multiple-output (UM-MIMO) can be applied to generate a high-gain directional beam by beamforming technologies. In this paper, a tutorial on the beamforming technologies for THz UM-MIMO systems is provided. Specifically, we first present the system model of THz UM-MIMO and identify its channel parameters and architecture types. Then, we illustrate the basic principles of beamforming via UM-MIMO and introduce the schemes of beam training and beamspace MIMO for THz communications. Moreover, the spatial-wideband effect and frequency-wideband effect in the THz beamforming are discussed. The joint beamforming technologies in the intelligent-reflectingsurface (IRS)-assisted THz UM-MIMO systems are introduced. Further, we present the corresponding fabrication techniques and illuminate the emerging applications benefiting from THz beamforming. Open challenges and future research directions on THz UM-MIMO systems are finally highlighted.

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Characterization for the Vehicle-to-Infrastructure Channel in Urban and Highway Scenarios at the Terahertz Band

Cited by 37 publications

References 36 publications

Measurement and Simulation for Vehicle-to-Infrastructure Communications at 3.5 GHz for 5G

Measurement and Simulation for Vehicle-to-Infrastructure Communications at 3.5 GHz for 5G

Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

Prospective Beamforming Technologies for Ultra-Massive MIMO in Terahertz Communications: A Tutorial

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