ZTE Communications ›› 2017, Vol. 15 ›› Issue (1): 8-13.DOI: 10.3969/j.issn.1673-5188.2017.01.002
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YANG Mi1, HE Ruisi1, AI Bo1, XIONG Lei1, DONG Honghui1, LI Jianzhi1, WANG Wei2, FAN Wei3, QIN Hongfeng4
Received:2017-02-12
Online:2017-02-25
Published:2019-12-24
About author:YANG Mi (yangmi@bjtu.edu.cn) received the B.S. degree and the M.S. degree in electronic & communication engineering from Beijing Jiaotong University (BJTU), China. He is pursuing the Ph.D. degree with the State Key Laboratory of Rail Traffic Control and Safety, BJTU. His research interests include radio propagation models, vehicle-to-vehicle communications and software defined radio.|HE Ruisi (ruisi.he@bjtu.edu.cn) received his B.E. and Ph.D. degrees from Beijing Jiaotong University (BJTU), China in 2009 and 2015, respectively. He is an associate professor with the State Key Laboratory of Rail Traffic Control and Safety, BJTU. His research interests include radio propagation, long-term evolution-railways, and fifth-generation communications. Dr. He is an editor of the IEEE Transactions on Wireless Communications. He serves as the Early Career Representative of Commission C, International Union of Radio Science (URSI), and received the URSI Young Scientist Award in 2015.|AI Bo (boai@bjtu.edu.cn) received his M.S. and Ph.D. degrees from Xidian University, China in 2002 and 2004, respectively. He is a full professor and Ph.D. degree candidate advisor with the State Key Laboratory of Rail Traffic Control and Safety at Beijing Jiaotong University, China. He is the deputy director of the State Key Laboratory of Rail Traffic Control and Safety. He has authored or co-authored six books and published over 230 academic research papers. He holds 21 invention patents. He is an Institution of Engineering and Technology fellow and a vice chair of IEEE VTS Beijing Chapter. He is an associate editor of IEEE Transactions on Consumer Electronics and an editorial committee member of Wireless Personal Communications.|XIONG Lei (lxiong@bjtu.edu.cn) received his Ph.D. from Beijing Jiaotong University (BJTU), China in 2007. He is an associate professor at BJTU. He has authored or co-authored two books and more than 30 papers. He is an expert on railway communications in China. His research interests include rail mobile communications, channel simulation, and software defined radio.|DONG Honghui (hhdong@bjtu.edu.cn) received the B.E. degree from Xi’an Jiaotong University, China in 1999, the M.E. degree from the China Academy of Railway Sciences, China in 2002, and the Ph.D. degree from the Institute of Automation, Chinese Academy of Sciences, China in 2007. He is currently an associate professor with the State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, China. His current research interests include pattern recognition and intelligent systems, as well as transportation science and engineering.|LI Jianzhi (15111063@bjtu.edu.cn) received the B.S. degree in communication engineering, and the M.S. degree in electronic & communication engineering from Beijing Jiaotong University (BJTU), China in 2013 and 2015, respectively. Since then, he has been pursuing the Ph.D. degree at the State Key Laboratory of Rail Traffic Control and Safety, BJTU. His current research focuses on massive MIMO in real propagation environments, including massive MIMO channel measurements, channel characterization and modeling, and performance evaluation.|WANG Wei (Wei.Wang@dlr.de) received the bachelor’s degree in communications engineering from Wuhan University, China in 2003; the master’s degree from the University of Kiel, Germany in 2006; and the doctoral degree from the University of Erlangen-Nuremberg, Erlangen, Germany, with distinction (summa cum laude) in 2014. Since 2007, he has been a scientific staff member with the Institute of Communications and Navigation, German Aerospace Center (DLR), Wessling, Germany. In March 2012, he was funded by EU COST-IC2100 for a short term scientific visiting at the University Aalborg, Denmark. His research interests includes channel measurement and modeling for localization/navigation applications, time variant channel parameters estimation and tracking, and radio based positioning and navigation. He has involved in several EU, ESA, GSA and DLR projects, e.g., GREAT, GRAMMAR, GalileoADAP, WHERE, WHERE2, and MarKom and so on. He has participated or led channel measurement campaigns for mobile, aeronautic, satellite and maritime propagation environments for these projects. He is a member of IEEE, VDE and COST 0802/2100. He received the best presentation paper award in ION GNSS 2012.|FAN Wei (wfa@es.aau.dk) received his B.E.achelor of Engineering degree from Harbin Institute of technology, China in 2009, master’s double degrees with highest honors from Politecnico di Torino, Italy and Grenoble Institute of Technology, France in 2011, and Ph.D. degree from Aalborg University, Denmark in 2014. From February 2011 to August 2011, he was with Intel Mobile Communications, Denmark as a research intern. He conducted a three-month internship at Anite telecoms oy, Finland in 2014. He was a short-term visiting researcher at Keysight, Finland and Huawei, Sweden in 2016 and 2017. His main areas of research are over the air testing of MIMO terminals, radio channel modelling, virtual drive testing, and 5G phased array signal processing.|QIN Hongfeng (qin.hongfeng@zte.com.cn) received the master’s and Ph.D. degrees from Northwestern Polytechnical University, China in 2000 and 2003, respectively. He is now working with ZTE Corporation as a senior engineer, senior expert and manager of baseband algorithm. He has authored or co-authored over 20 scientific research papers and books, and over 100 invention patents in his research area till now. His current research interests include wireless communications, radio propagation and channel modeling, and signal processing and application.
Supported by:YANG Mi, HE Ruisi, AI Bo, XIONG Lei, DONG Honghui, LI Jianzhi, WANG Wei, FAN Wei, QIN Hongfeng. Measurement-Based Channel Characterization for 5G Wireless Communications on Campus Scenario[J]. ZTE Communications, 2017, 15(1): 8-13.
Figure 1. Our measurement system: (a) System architecture; (b) transmitter and receiver; (c) the clock module and power amplifier; and (d) measurement setup.
| Frequency | 460 MHz and 3.5 GHz |
|---|---|
| Bandwidth | 30 MHz |
| Maximum transmitted power | 40 dBm |
| Scenario | Campus, LOS and NLOS |
| Height of transmitter antenna | 60 m |
| Height of receiver antenna | 1.5 m |
| Receiver speed | Low speed (1.2 m/s) |
Table 1 Main measurement parameters
| Frequency | 460 MHz and 3.5 GHz |
|---|---|
| Bandwidth | 30 MHz |
| Maximum transmitted power | 40 dBm |
| Scenario | Campus, LOS and NLOS |
| Height of transmitter antenna | 60 m |
| Height of receiver antenna | 1.5 m |
| Receiver speed | Low speed (1.2 m/s) |
Figure 2. The measurement Environment: (a) Top view of the measurement route; (b) the measurement route seen from the transmitter location; and (c) the farthest distance between the receiver and transmitter.
Figure 3. Power delay profile: (a) APDP at 460MHz and (b) APDP at 3.5GHz. Green rings show the obvious scattering components.
Figure 4. SNR for the whole route at (a) 460 MHz and (b) 3.5 GHz. Two measurements at 460 MHz and 3.5 GHz have the same path, but the x-axis scaling are not identical due to the slight difference of the movement speeds.
Figure 5. Scatter plot of path loss versus log-distance for 460 MHz, together with linear regression fit curve.
Figure 6. Scatter plot of path loss versus log-distance for 3.5 GHz, together with linear regression fit curve.
| 460 MHz γ in LOS | 4.23 |
|---|---|
| 460 MHz PL(d 0) in LOS | -10.5 |
| 3.5 GHz γ in LOS | 6.16 |
| 3.5 GHz PL(d 0) in LOS | -43.5 |
Table 2 γ and PL (d 0)
| 460 MHz γ in LOS | 4.23 |
|---|---|
| 460 MHz PL(d 0) in LOS | -10.5 |
| 3.5 GHz γ in LOS | 6.16 |
| 3.5 GHz PL(d 0) in LOS | -43.5 |
Figure 7. PDF plot of the measured shadow fading components, together with the Gaussian distribution fit: (a) 460MHz-LOS; (b) 3.5GHz-LOS.
Figure 8. CDF plot of the estimated RMS delay spread on 460 MHz and 3500 MHz.
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