TY - GEN
T1 - Millimeter-wave channel modelling and ray-tracing method validation
AU - Shay, Wen Tron
AU - Shen, Kuan Ju
AU - Chen, Yu Rong
AU - Lin, Ying Ying
AU - Tsai, Zuo-Min
AU - Tarng, Jenn-Hawn
PY - 2019/12
Y1 - 2019/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85082496226&partnerID=8YFLogxK
U2 - 10.1109/PIERS-Fall48861.2019.9021354
DO - 10.1109/PIERS-Fall48861.2019.9021354
M3 - Conference contribution
AN - SCOPUS:85082496226
T3 - 2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings
SP - 2612
EP - 2620
BT - 2019 Photonics and Electromagnetics Research Symposium - Fall, PIERS - Fall 2019 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 17 December 2019 through 20 December 2019
ER -