THz Channel Characterization of Chip-to-Chip Communication in Desktop Size Metal Enclosure

Fu, Jinbang; Juyal, Prateek; Zajić, Alenka

doi:10.1109/tap.2019.2934908

Cited by 32 publications

(27 citation statements)

References 30 publications

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“…The corresponding attenuation caused by rain is approximately 21.4 dB/km according to the ITU-R 838-3 [15]. For thick fog with a liquid water density of 0.5 g/m 3 and visibility of 50 m, the attenuation caused is about 7.26 dB/km, as calculated according to the ITU-R P.840-7 [11]. The attenuation due to snow is about 350 dB/km, as calculated according to the measurement method in a representative article [20].…”

Section: Discussionmentioning

confidence: 99%

“…As terahertz (THz) communications can achieve high data rates of dozens of gigabits or even terabits per second without any efficiency enhancement techniques, it is considered one of the leading candidates for the upcoming age of beyond-fifth-generation mobile networks (B5G) or sixth-generation mobile networks (6G) in the next decade. The deployment scenarios for THz communications are considerably diverse, including wireless personal area networks (WPANs) [1], wireless local area networks (WLANs), kiosk downloading [2], chip-to-chip communications [3], wireless fronthaul/backhaul, and vehicular communications [4].…”

Section: Introductionmentioning

confidence: 99%

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Impact of Meteorological Attenuation on Channel Characterization at 300 GHz

Lai

Guan

et al. 2020

Electronics

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Terahertz (THz) communication is a key candidate for the upcoming age of beyond-fifth-generation mobile networks (B5G) or sixth-generation mobile networks (6G) in the next decade and can achieve ultra-high data rates of dozens of gigabits or even terabits per second. As the carrier frequency increases from radio frequency (RF) to the THz band, the impact of meteorological factors on the wireless link is expected to become more pronounced. In this work, we first provide an overview of the attenuation caused by atmospheric gases, fog, and rain on terrestrial THz wireless communications using the recommendations of the International Telecommunication Union-Radiocommunication (ITU-R). Measured data from the literature are used to predict the attenuation caused by snow. Because unfavorable weather conditions may harm sensitive measurement equipment, ray-tracing (RT) simulations are sometimes used as an alternative to extend sparse empirical data. In this study, the terrestrial channel in an urban scenario at 300 GHz, with a bandwidth of 8 GHz, is characterized using RT simulations under different meteorological factors. The key performance parameters are explored, including path loss (PL), Rician K-factor (KF), root-mean-square (RMS) delay spread (DS), and four angular spreads. The channel characteristics under different meteorological conditions studied in this work are expected to aid the design of future outdoor terrestrial THz communications.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of Meteorological Attenuation on Channel Characterization at 300 GHz

Lai

Guan

et al. 2020

Electronics

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“…Several publications in the literature have explored the use of THz wireless links in data centers to achieve dynamic operation and higher reconfigurability [1], [10]- [14]. Moreover, THz frequencies promise a higher data rate with its large bandwidth and lower interference (due to the directional antennas) [15]- [20]. An IEEE 802.15.3d [21] standard for THz communication proposed a data rate of up to 100 Gbit/s at 252-325 GHz using eight different bandwidths between 2.16 GHz and 69.12 GHz.…”

Section: A Related Workmentioning

confidence: 99%

THz Cluster-Based Modeling and Propagation Characterization in a Data Center Environment

2020

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Terahertz (THz) wireless data centers can provide low-latency networks and dynamic scalability that are vital for the next-generation cloud computing infrastructure. The knowledge of THz propagation characteristics in a data center environment is essential to the development of novel THz communication systems. However, a comprehensive characterization and modeling of THz propagation channels, which includes various obstructions in a data center is not available. This paper presents results from a THz channel measurement campaign conducted in a data center environment. Various propagation scenarios such as lineof-sight (LoS) link, non-LoS (NLoS) link using existing materials in a data center to redirect the beam, and obstructed-LoS (OLoS),-NLoS (ONLoS) links with common objects in data centers (cables and server racks' mesh doors) serving as obstruction were investigated. Propagation channel parameters such as pathloss and root-mean-squared (RMS) delay spread were analyzed in the aforementioned scenarios while cluster-based modeling was implemented for some scenarios. The proposed model for THz propagation in a data center environment was validated with the measured data. The average inter-arrival time of clusters (1/) and rays (1/λ) are estimated as 4.4 ns and 0.24 ns, respectively. We find that local scattering objects such as server-rack frames/pillars can be used to assist the NLoS type of link, and that cooling airflow in the data center has a negligible impact on THz propagation. Power cables and mesh doors of the server racks can cause additional attenuation of about 20 dB and 6 dB, respectively. Cluster model and other characterization results provided in this work are pertinent to THz wireless system design for data center environments. INDEX TERMS Channel measurements, channel modeling, statistical channel model, terahertz (THz) communications, wireless data centers.

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“…For instance, several works have proposed models for the mmWave wireless channel within a rack [36], between racks [37]- [39] or at the cabinet scale [40] in data centers. Some papers have also covered the channel at the motherboard scale in desktops or laptops [8], [41]- [49]. Although there are structural resemblances with the wireless chip-scale environment, such models are not directly applicable here due to substantial differences in dimensions, materials, and antenna placement restrictions.…”

Section: B Environment Descriptionmentioning

confidence: 99%

Wave Propagation and Channel Modeling in Chip-Scale Wireless Communications: A Survey From Millimeter-Wave to Terahertz and Optics

2020

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The miniaturization of transceivers and antennas is enabling the development of Wireless Networks-on-Chip (WNoC), in which chip-scale communication is utilized to increase the computing performance of multi-core/multi-chip architectures. Although the potential benefits of the WNoC paradigm have been studied in depth, its practicality remains unclear due to the lack of a proper characterization of the wireless channel at the chip scale and across the spectrum, among others. In this paper, the state of the art in wave propagation and channel modeling for chip-scale communication is surveyed. First, the peculiarities of WNoC, including the design drivers, architecture, environment, and on-chip electromagnetics are reviewed. After a brief description of the different methods to characterize wave propagation at chipscales, a comprehensive discussion covering the different works at millimeter-wave (mmWave), Terahertz (THz) and optical frequencies is provided. Finally, the major challenges in the characterization of the WNoC channel and potential solutions to address them are discussed, providing a roadmap for the foundations of practical WNoCs.

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THz Channel Characterization of Chip-to-Chip Communication in Desktop Size Metal Enclosure

Cited by 32 publications

References 30 publications

Impact of Meteorological Attenuation on Channel Characterization at 300 GHz

Impact of Meteorological Attenuation on Channel Characterization at 300 GHz

THz Cluster-Based Modeling and Propagation Characterization in a Data Center Environment

Wave Propagation and Channel Modeling in Chip-Scale Wireless Communications: A Survey From Millimeter-Wave to Terahertz and Optics

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