Abstract
Traditional mobile communication systems mainly work on the licensed frequency band near or below 3 GHz; however, this band is becoming increasingly crowded. On the other hand, there are abundant unlicensed spectrum resources in higher frequency bands, e.g., 6 GHz, 15 GHz, and 28 GHz, and if those bands are applied, the current spectrum shortage problem could be effectively alleviated. However, the wireless channel characteristics and models are important but still unknown, and thus in this study, extensive measurements and modeling have been conducted to study the characteristics of the high-frequency 15-GHz band. Specifically, a PN(Pseudo Noise) sequence based time-domain measurement system was built and applied to measure the propagation characteristics of the LOS (Line-of-Sight) and NLOS (Non-Line-of-Sight) scenarios in an indoor corridor at 15 GHz. Then, in-depth analysis and modeling on the large-scale characteristics of wireless channels, the relationship between distance and path loss, the path loss exponent, and the shadow fading standard variance are provided. Moreover, the relationship between received power and different elevation angles was studied. In the measurement, two 25-dBi horn antennas with a 10 half-power beam width are used to change elevation angles in the transmitting terminal and azimuth angles in the receiving terminal for all measurement points. The findings and results in this work will serve as a reference and basis for future theoretical studies of the 15-GHz band.
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This research is partially supported by The National High Technology Research Development Program of China (863 Program) (No.2014AA01A706), The National Natural Science Foundation of China (No.61471346), The National Science and Technology Major Project (No.2014ZX03003012), The Science and Technology Commission of Shanghai Municipality (No.14DZ2281000).
XU Hui was born in 1976. He received the M.E. degree in 2004 from Shanghai Jiao Tong University. He is now a senior engineer in Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences and Shanghai Research Center for Wireless Communications. His research interest is the wireless communication networks. (Email: hui.xu@wico.sh)
ZHANG Wuxiong received the Ph.D. degree in 2013 from Shanghai Institute of Microsystem and Information Technology, Chinese Academic of Sciences. He is currently an assistant professor at SIMIT and Shanghai Research Center for Wireless Communications. His research interests include 4G/5G mobile communication systems and vehicular networks.
YANG Yang was born in 1974. He received the Ph.D. degree in 2002 from the University of Hong Kong. He is now a professor in Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences and Shanghai Research Center for Wireless Communications. His research interest is the wireless ad hoc and sensor networks.
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Xu, H., Zhang, W. & Yang, Y. Channel measurement and modeling for the 15-GHz radio band in an indoor corridor environment. J. Commun. Inf. Netw. 1, 102–108 (2016). https://doi.org/10.1007/BF03391562
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DOI: https://doi.org/10.1007/BF03391562