Millimeter-wave channel modelling and ray-tracing method validation

Wen Tron Shay, Kuan Ju Shen, Yu Rong Chen, Ying Ying Lin, Zuo-Min Tsai, Jenn-Hawn Tarng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Millimeter-wave bands have been adopted for the fifth generation of mobile communication (5G) mainly due to large available bandwidths. However, the electromagnetic wave propagation characteristics in the millimeter-wave bands differ from those of conventional sub-6 GHz wireless communication bands, for example in their higher transmission and penetration losses, lower contributions from reflection and diffraction waves. Although the research on millimeter-wave channels has been conducted for years, some results show large differences in millimeter-wave path loss. These results indicate that the millimeter-wave channels may be site-specific. A model based on measurement results in one environment cannot always be used in other environments. Therefore, the ray-tracing method is an appropriate alternative for millimeter-wave channel estimation, a major reason for this being that the real environment model is involved in the simulation, which reflects the actual channel characteristics of the environment. In this study, a time-domain automatic channel measurement system, which comprised a millimeter-wave radio channel sounding system and an automatic antenna mechanical scanning system, was constructed for millimeter-wave channel measurements. The automatic channel measurement system greatly reduce the time and manpower involved in measurement and improve channel measurement accuracy. This study performed numerous millimeter-wave indoor channel measurements. The results were used to develop or validate millimeter-wave channel models such as path loss models, diffraction effect models, and human-body blockage models, etc.. Measurement results from an indoor environment were compared with the results simulated using the ray-tracing method. The results of the comparison demonstrate that the ray-tracing method can effectively simulate the arrival times of major transmission rays but cannot accurately estimate the strength of the rays.

Original languageEnglish
Title of host publication2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages9
ISBN (Electronic)9781728153049
StatePublished - Dec 2019
Event2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Xiamen, China
Duration: 17 Dec 201920 Dec 2019

Publication series

Name2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings


Conference2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019

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