Extending Spatial and Temporal Characterization of Indoor Wireless Channels From 350 to 650 GHz

Zhao, Heng; Wei, Leihao; Jarrahi, Mona; Pottie, Gregory J.

doi:10.1109/tthz.2019.2901602

Cited by 23 publications

(18 citation statements)

References 36 publications

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“…Furthermore, the authors in [174] provided an assessment for the communication system design requirements at higher frequencies. In fact, channel measurement results for 650 GHz carrier frequencies in comparison with 350 GHz carrier frequencies are given for a typical indoor environment.…”

Section: B Indoor Channel Modelsmentioning

confidence: 99%

Terahertz Band: The Last Piece of RF Spectrum Puzzle for Communication Systems

Elayan

Amin

Shihada

et al. 2020

IEEE Open J. Commun. Soc.

410

219

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Ultra-high bandwidth, negligible latency and seamless communication for devices and applications are envisioned as major milestones that will revolutionize the way by which societies create, distribute and consume information. The remarkable expansion of wireless data traffic that we are witnessing recently has advocated the investigation of suitable regimes in the radio spectrum to satisfy users' escalating requirements and allow the development and exploitation of both massive capacity and massive connectivity of heterogeneous infrastructures. To this end, the Terahertz (THz) frequency band (0.1-10 THz) has received noticeable attention in the research community as an ideal choice for scenarios involving high-speed transmission. Particularly, with the evolution of technologies and devices, advancements in THz communication is bridging the gap between the millimeter wave (mmW) and optical frequency ranges. Moreover, the IEEE 802.15 suite of standards has been issued to shape regulatory frameworks that will enable innovation and provide a complete solution that crosses between wired and wireless boundaries at 100 Gbps. Nonetheless, despite the expediting progress witnessed in THz wireless research, the THz band is still considered one of the least probed frequency bands. As such, in this work, we present an up-to-date review paper to analyze the fundamental elements and mechanisms associated with the THz system architecture. THz generation methods are first addressed by highlighting the recent progress in the electronics, photonics as well as plasmonics technology. To complement the devices, we introduce the recent channel models available for indoor, outdoor as well as nanoscale propagation at THz band frequencies. A comprehensive comparison is then presented between the THz wireless communication and its other contenders by treating in depth the limitations associated with each communication technology. In addition, several applications of THz wireless communication are discussed taking into account the various length scales at which such applications occur. Further, as standardization is a fundamental aspect in regulating wireless communication systems, we highlight the milestones achieved regarding THz standardization activities. Finally, a future outlook is provided by presenting and envisaging several potential use cases and attempts to guide the deployment of the THz frequency band and mitigate the challenges related to high frequency transmission. ). Fig. 1. Wireless Roadmap Outlook up to the year 2035.

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Section: B Indoor Channel Modelsmentioning

confidence: 99%

Terahertz Band: The Last Piece of RF Spectrum Puzzle for Communication Systems

Elayan

Amin

Shihada

et al. 2020

IEEE Open J. Commun. Soc.

410

219

View full text Add to dashboard Cite

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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%

“…Consequently, the directionality of the THz waves inevitably leads to the sparsity of indoor THz channel. In order to verify the correctness of the proposed model, the RMS delay spread of the channel is simulated and compared with the measurement results from [18]. The GBSM without molecular absorption and diffuse scattering is also considered.…”

Section: Results and Analysesmentioning

confidence: 99%

“…Moreover, based on Kirchhoff scattering theory and measurements, some diffuse scattering models were developed to analyze scattering loss on rough surfaces [14][15][16]. Through commercial raytracing tool simulations and indoor channel measurements, power delay profile (PDP), power angle profile (PAP), and frequency selectivity properties of the indoor channels at some THz frequencies were studied [17,18]. Nevertheless, although the abovementioned models can mimic the channels accurately, their structures are complicated, and using them to generate channel samples is time-consuming.…”

Section: Introductionmentioning

confidence: 99%

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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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“…This data is presented by calculating the Rician k-factor and RMS delay spread. Furthermore, in [13] channel characterization is extended up to 650 GHz using frequency up-converters and the results are compared with measurements in the 350 GHz band for indoor communications. PDP and power angle profile (PAP) are presented and the channel capacity is calculated.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Wideband Terahertz Channel Propagation Measurements from 500 to 750 GHz

Serghiou

Khalily

Johny

et al. 2020

2020 International Conference on UK-China Emerging Technologies (UCET)

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This paper presents empirically based ultrawideband and directional channel measurements, performed in the Terahertz (THz) frequency range over 250 GHz bandwidth from 500 GHz to 750 GHz. Measurement setup calibration technique is presented for free-space measurements taken at Line-of-Sight (LoS) between the transmitter (Tx) and receiver (Rx) in an indoor environment. The atmospheric effects on signal propagation in terms of molecular absorption by oxygen and water molecules are calculated and normalized. Channel impulse responses (CIRs) are acquired for the LoS scenario for different antenna separation distances. From the CIRs the Power Delay Profile (PDP) is presented where multiple delay taps can be observed caused due to group delay products and reflections from the measurement bench.

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Extending Spatial and Temporal Characterization of Indoor Wireless Channels From 350 to 650 GHz

Cited by 23 publications

References 36 publications

Terahertz Band: The Last Piece of RF Spectrum Puzzle for Communication Systems

Terahertz Band: The Last Piece of RF Spectrum Puzzle for Communication Systems

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

Ultra-Wideband Terahertz Channel Propagation Measurements from 500 to 750 GHz

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