Plane-Wave and Vector-Rotation Approximation Technique for Reducing Computational Complexity to Simulate MIMO Propagation Channel Using Ray-Tracing

Yamada, Wataru; Kita, Naoki; Sugiyama, Takatoshi; Nojima, Toshio

doi:10.1587/transcom.e92.b.3850

Cited by 10 publications

(9 citation statements)

References 12 publications

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“…For this, the scattering behaviour considering a high order of diffuse reflections needs to be accounted for, which requires knowledge of how well each material absorbs energy and how rough the material is. Moreover, when RT needs to be applied to simulate practical MIMO systems where high data rates can be achieved, the computational complexity increases massively as the simulation needs to account besides scattering, communication between multiple antennas over ultrawide frequency bands [145]. Furthermore, it is a challenge to be able to analyse the time-varying properties of the channel.…”

Section: A Deterministic Channel Modelingmentioning

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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Section: A Deterministic Channel Modelingmentioning

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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“…A number of MIMO propagation research studies have been reported recently as many radio systems have adopted MIMO technologies [92], [93]. The MIMO technique can be applied to communications and sensing or radar systems that are non-communicative, by employing MIMO propagation characteristics [94], [95].…”

Section: Mimo Propagation For Various Applicationsmentioning

confidence: 99%

Recent Technologies in Japan on Array Antennas for Wireless Systems

Hirokawa

Chen

Fujimoto

et al. 2017

IEICE Trans. Commun.

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SUMMARY Array antenna technology for wireless systems is highly integrated for demands such as multi-functionality and high-performance. This paper details recent technologies in Japan in design techniques based on computational electromagnetics, antenna hardware techniques in the millimeter-wave band, array signal processing to add adaptive functions, and measurement methods to support design techniques, for array antennas for future wireless systems. Prospects of these four technologies are also described. key words: array antenna, multiple antenna, computational electromagnetics, millimeter-wave, antenna measurement, signal processing

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“…The individual path data can be accurately calculated through this method, but the calculations often take a lot of time when there are a large number of wall-surface reflections and diffractions involved. Therefore, various methods have been proposed for reducing the ray tracing computation time [1,2]. Even in the scheme of [1] or [2], computational time for getting a large number of data points when conducting statistical evaluation of transmission characteristics, needs to be further reduced.…”

Section: Introductionmentioning

confidence: 99%

A simplified scheme for evaluating MIMO channel characteristics by combining ray tracing and the Kronecker model

2016

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In this letter, we propose a simple method for analyzing the statistical properties of signal propagation in a line-of-sight (LOS) multipath fading environment, such as in inter-vehicle communications which use a Multiple-Input-Multiple-Output (MIMO), Multiple-Input-Single-Output (MISO) or Single-Input-Multiple-Output (SIMO) system. Specifically, in our method, ray tracing is only used to calculate the spatial correlation characteristics between a pair of transmitting and receiving antenna points that are used as a reference in an outdoor model, and these characteristics are then applied to the Kronecker model to estimate the statistical properties of the surrounding areas. Compared with the results calculated by ray tracing alone or the simplified method that we proposed previously, it is found that the channel characteristics can be estimated to a high degree of accuracy with a very short computation time using the proposed method.

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Plane-Wave and Vector-Rotation Approximation Technique for Reducing Computational Complexity to Simulate MIMO Propagation Channel Using Ray-Tracing

Cited by 10 publications

References 12 publications

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

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

Recent Technologies in Japan on Array Antennas for Wireless Systems

A simplified scheme for evaluating MIMO channel characteristics by combining ray tracing and the Kronecker model

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