Wideband Channel Measurements and Temporal-Spatial Analysis for Terahertz Indoor Communications

Yu, Ziming; Chen, Yi; Wang, Guangjian; Gao, Weijun; Han, Chong

doi:10.1109/iccworkshops49005.2020.9145314

Cited by 34 publications

(30 citation statements)

References 8 publications

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“…In [31], an indoor line-of-sight (LOS) measurement campaign up to 5.5 m in the frequency range 140-220 GHz was presented, and path loss exponent (PLE) in models was given by fitting measured data. In [32], a wideband channel measurement between 130 GHz and 143 GHz was conducted in a typical meeting room. The path loss, power-delay-angular profiles, temporal and spatial features were studied.…”

Section: Literature Reviewmentioning

confidence: 99%

Channel measurement and path loss modeling from 220 GHz to 330 GHz for 6G wireless communications

et al. 2021

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Terahertz (THz) communication has been envisioned as a key enabling technology for sixthgeneration (6G). In this paper, we present an extensive THz channel measurement campaign for 6G wireless communications from 220 GHz to 330 GHz. Furthermore, the path loss is analyzed and modeled by using two single-frequency path loss models and a multiplefrequencies path loss model. It is found that at most frequency points, the measured path loss is larger than that in the free space. But at around 310 GHz, the propagation attenuation is relatively weaker compared to that in the free space. Also, the frequency dependence of path loss is observed and the frequency exponent of the multiple-frequencies path loss model is 2.1. Moreover, the cellular performance of THz communication systems is investigated by using the obtained path loss model. Simulation results indicate that the current inter-site distance (ISD) for the indoor scenario is too small for THz communications. Furthermore, the tremendous capacity gain can be obtained by using THz bands compared to using microwave bands and millimeter wave bands. Generally, this work can give an insight into the design and optimization of THz communication systems for 6G.

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Section: Literature Reviewmentioning

confidence: 99%

Channel measurement and path loss modeling from 220 GHz to 330 GHz for 6G wireless communications

et al. 2021

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“…In this section, some statistical properties of the 3-D hybrid proposed THz channel model will be analyzed. Measured results in [18] and [28] will also be used to evaluate the correctness of the proposed model. Consider a typical indoor wireless propagation environment and let the distance between Tx and Rx R LoS = 5 m. The Tx and Rx are at the same height, which is 1.5 m. The number of clusters N is set as 4, and the number of rays in each cluster, M , is set as 20.…”

Section: Results and Analysesmentioning

confidence: 99%

“…On one hand, transmission attenuation is calculated for each path based on the deterministic method. Because the multipath components (MPCs) in the THz indoor channel are sparse [28], the computational complexity is acceptable. On the other hand, in light of the stochastic modeling approach, we present the dynamic generation process of channel impulse responses (CIRs).…”

Section: Introductionmentioning

confidence: 99%

A 3-D hybrid dynamic channel model for indoor THz communications

Zhang

Zhao

2021

China Commun.

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To meet the demands for the explosive growth of mobile data rates and scarcity of spectrum resources in the near future, the terahertz (THz) band has widely been regarded as a key enabler for the upcoming beyond fifth-generation (B5G) wireless communications. An accurate THz channel model is crucial for the design and deployment of the THz wireless communication systems. In this paper, a three-dimensional (3-D) dynamic indoor THz channel model is proposed by means of combining deterministic and stochastic modeling approaches. Clusters are randomly distributed in the indoor environment and each ray is characterized with consideration of molecular absorption and diffuse scattering. Moreover, we present the dynamic generation procedure of the channel impulse responses (CIRs). Statistical properties are investigated to indicate the non-stationarity and feasibility of the proposed model. Finally, by comparing with delay spread and K-factor results from the measurements, the utility of the proposed channel model is verified.

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“…Figure 11 illustrates the panorama of all the smart rail mobility scenarios, requiring the seamless wireless connectivity with the data rate on the order of 100 Gbps or even more, forming a strong driving force for exploiting the THz band, i.e. beyond 300 GHz, where there are huge continuous available spectrum resources [45,46]. Without any doubt, to fully understand the propagation channel in these scenarios is of importance [27,17].…”

Section: Case Study For Realizing Real-istic Thz Channels For Smart Rail Mobilitymentioning

confidence: 99%

Towards 6G: Paradigm of realistic terahertz channel modeling

Guan

et al. 2021

China Commun.

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Terahertz (THz) communications are envisioned as a key technology for the sixth-generation wireless communication system (6G). However, it is not practical to perform large-scale channel measurements with high degrees of freedom at THz frequency band. This makes empirical or stochastic modeling approaches relying on measurements no longer stand. In order to break through the bottleneck of scarce fulldimensional channel sounding measurements, this paper presents a novel paradigm for THz channel modeling towards 6G. With the core of high-performance ray tracing (RT), the presented paradigm requires merely quite limited channel sounding to calibrate the geometry and material electromagnetic (EM) properties of the three-dimensional (3D) environment model in the target scenarios. Then, through extensive RT simulations, the parameters extracted from RT simulations can be fed into either ray-based novel stochastic channel models or cluster-based standard channel model families. Verified by RT simulations, these models can generate realistic channels that are valuable for the design and evaluation of THz systems. Representing two ends of 6G THz use cases from microscopy to macroscopy, case studies are made for close-proximity communications, wireless connections on a desktop, and smart rail mobility, respectively. Last but not least, new concerns on channel modeling resulting from distinguishing features of THz wave are discussed regarding propagation, antenna array, and device aspects, re-

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Wideband Channel Measurements and Temporal-Spatial Analysis for Terahertz Indoor Communications

Cited by 34 publications

References 8 publications

Channel measurement and path loss modeling from 220 GHz to 330 GHz for 6G wireless communications

Channel measurement and path loss modeling from 220 GHz to 330 GHz for 6G wireless communications

A 3-D hybrid dynamic channel model for indoor THz communications

Towards 6G: Paradigm of realistic terahertz channel modeling

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