Channel Characterization and Ray-Tracing Assisted Stochastic Modeling for Urban Vehicle-to-Infrastructure Terahertz Communications

Li, Yuanbo; Chen, Yi; Yan, Dong; Guan, Ke; Han, Chong

doi:10.1109/tvt.2022.3217352

Cited by 14 publications

(6 citation statements)

References 28 publications

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“…This was applied in THz V2I communication to determine the optimal THz transmission frequency and power. Li et al [258] conducted an analysis of THz communication in urban environments for vehicular networks, providing a detailed characterization of features such as path loss and shadow fading.…”

Section: Terahertzmentioning

confidence: 99%

A Survey on Video Streaming for Next-Generation Vehicular Networks

Huang,

Cheng,

Lien

et al. 2024

Electronics

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As assisted driving technology advances and vehicle entertainment systems rapidly develop, future vehicles will become mobile cinemas, where passengers can use various multimedia applications in the car. In recent years, the progress in multimedia technology has given rise to immersive video experiences. In addition to conventional 2D videos, 360° videos are gaining popularity, and volumetric videos, which can offer users a better immersive experience, have been discussed. However, these applications place high demands on network capabilities, leading to a dependence on next-generation wireless communication technology to address network bottlenecks. Therefore, this study provides an exhaustive overview of the latest advancements in video streaming over vehicular networks. First, we introduce related work and background knowledge, and provide an overview of recent developments in vehicular networking and video types. Next, we detail various video processing technologies, including the latest released standards. Detailed explanations are provided for network strategies and wireless communication technologies that can optimize video transmission in vehicular networks, paying special attention to the relevant literature regarding the current development of 6G technology that is applied to vehicle communication. Finally, we proposed future research directions and challenges. Building upon the technologies introduced in this paper and considering diverse applications, we suggest a suitable vehicular network architecture for next-generation video transmission.

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Section: Terahertzmentioning

confidence: 99%

A Survey on Video Streaming for Next-Generation Vehicular Networks

Huang,

Cheng,

Lien

et al. 2024

Electronics

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“…where n denotes the path loss exponent (PLE), whose best fit value is around 2 in the THz band according to measurementbased works [29], [30], σ RCS is the radar cross-section (RCS) of the UE, and e −K(fc)r accounts for the round-trip molecular absorption loss, with K(f c ) denoting the frequency-dependent molecular absorption coefficient. The calculation of K involves parameters of each gas and isotopologue in the atmosphere, which can be derived from [31] in detail.…”

Section: A Thz Tdm-mimo Sensing Modelmentioning

confidence: 99%

“…For typical mid-range V2V applications in the urban grid scenario, introduced by 3GPP TR 37.885 [49], a maximum range of 50 m with a resolution of up to 0.2 m, a maximum relative radial velocity of 60 km/h with a resolution of up to 0.2 m/s [39], and a angular resolution of 4 • [50] are expected. Combined with the measurements of urban V2V THz channel in [29], communication constraints and sensing requirements for the waveform design are summarized in Table II.…”

Section: A System Parameters Configurationmentioning

confidence: 99%

Comprehensive Link-Level Simulator for Terahertz MIMO Integrated Sensing and Communication Systems with TDD Framework

Shi,

Yang,

Peng

2024

Preprint

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Terahertz (THz) integrated sensing and communication (ISAC) with multiple-input multiple-output (MIMO) architecture is recognized as a promising interdisciplinary technology for ultra-high-rate mobile communications since the systems enable narrow beam tracking which is necessary in the THz band. In this work, a link-level simulator for THz MIMO ISAC in time-division duplex (TDD) operation is proposed to design and analyze mobile systems. Compared to the simulators in the literature, the proposed simulator is more practical and comprehensive, employing two-dimensional motion simulation instead of numerical evaluation, and considering THz characteristics such as wideband echo, multipath components and molecular absorption. Specifically, the simulator supports the standard orthogonal frequency division multiplexing (OFDM) and discrete Fourier transform spread OFDM (DFT-s-OFDM) waveforms for sensing and communication simultaneously. Trade-offs between communication and sensing metrics required for waveform numerology design are investigated. In particular, by exploiting TDD framework's integration capability, range-velocity-angle estimation with virtual array and sensing-aided downlink spatial multiplexing are co-designed. Additionally, a user interface with elaborate parameter configuration is introduced. Finally, we implement an urban vehicle-to-vehicle (V2V) application case to verify the simulator. The simulation results present the feasibility of the developed integrated architecture.

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“…State-of-the-art investigations of THz communication systems include-among others-several channel measurements and modelling approaches [4][5][6][7][8][9][10][12][13][14], material characterisation [15], and surveys about challenges and opportunities [1,16,17]. Besides, device discovery for THz communication systems has been investigated for some time and different approaches were presented so far.…”

Section: Introductionmentioning

confidence: 99%

A ray tracing‐assisted device discovery approach for low terahertz communications

Doeker

Boban

Kuerner

2023

IET Microwaves Antenna & Prop

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Future wireless communication systems at low terahertz frequencies (0.1-1 THz) suffer from high attenuation losses, and therefore, highly directive antennas are foreseen. As highly directive antennas have narrow beams, the alignment of the transmitter and the receiver is a crucial step in such systems. A device discovery approach using results from ray tracing (RT) combined with an iterative fine tuning is presented by the authors. A summary of previous investigations emphasises the benefits in terms of performance compared to an iterative approach. Furthermore, it indicates strong dependency of the RT output on the accuracy of the input data, that is, the environmental model. The authors extend the previous works by evaluating the impact of antenna characteristics. It is shown that the sidelobes lead to an error in the final alignment due to the superposition of the received power via multipath components, and equations to calculate the maximum error are given. Besides, the impact is evaluated with respect to sidelobe suppression. Here, equations to calculate the maximum error are given and it is shown that the sidelobes do not affect the alignment if the gain of the sidelobe is more than 30 dB lower than that of the mainlobe. K E Y W O R D S antenna design, device discovery, indoor communication, millimetre wave communication, multipath channels, ray tracing, terahertz waves This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Channel Characterization and Ray-Tracing Assisted Stochastic Modeling for Urban Vehicle-to-Infrastructure Terahertz Communications

Cited by 14 publications

References 28 publications

A Survey on Video Streaming for Next-Generation Vehicular Networks

A Survey on Video Streaming for Next-Generation Vehicular Networks

Comprehensive Link-Level Simulator for Terahertz MIMO Integrated Sensing and Communication Systems with TDD Framework

A ray tracing‐assisted device discovery approach for low terahertz communications

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