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Measurement Uncertainty Propagation Law for VNA in Frequency Domain Channel Measurement |
ZHOU Xin1,2,FENG Zhi-gang2,ZHONG Zhang-dui1,BIAN Xin2,AI Bo1,LIU Ke2,GUO Xiao-tao2,ZHAO Xing2 |
1.State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China
2.Division of Eletronics and Information Technology, National Institute of Metrology, Beijing 100029, China |
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Abstract The measurement uncertainty is introduced by measurement instruments in frequency domain channel measurement systems. The measurement instrument, Vector Network Analyzer, need to be calibrated before measurement. The uncertainty analysis for various calibration methods is the foundation to make a judicious choice of calibration methods. The uncertainty analysis is based on Monte Carlo method. To account for the correlations between S-parameter measurements for different frequencies, covariance-matrix-based analysis is performed. The experiments in this paper show that correlations have a strong influence on the uncertainties of channel parameter measurements. Based on the quantitative analysis, the “response” calibration is suggested for channel measurements.
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Received: 20 July 2016
Published: 11 August 2017
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[1]Ai B, Kürner T, Rodríguez C B, et al. Radio Wave Propagation and Wireless Channel Modeling[J/OL]. International Journal of Antennas & Propagation, 2013,2013:835160-3. http://dx.doi.org/10.1155/2013/835160
[2]Ai B, He R, Zhong Z, et al. Radio Wave Propagation Scene Partitioning for High-Speed Rails[J/OL]. International Journal of Antennas & Propagation, 2012, 2012: 815232-7. https://www.hindawi.com/journals/ijap/2012/815232
[3]Rappaport T S. Wireless communications: principles and practice[M]. New Jersey: Prentice hall PTR, 1996.
[4]Remley K A, Matolak D W, Zhang Q, et al. Measurements and models for the wireless channel in a ground-based urban setting in two public safety frequency bands[R]. NIST TN-1557, 2011:1-62.
[5]Sun R, Matolak D. Characterization of the 5-GHz Elevator Shaft Channel[J]. Wireless Communications, IEEE Transactions on, 2013, 12(10): 5138-5145.
[6]Guan K, Zhong Z, Ai B, et al. Propagation mechanism modelling in the near region of circular tunnels[J]. IET microwaves, antennas & propagation, 2012, 6(3): 355-360.
[7]Matz G, Molisch A F, Hlawatsch F, et al. On the systematic measurement errors of correlative mobile radio channel sounders[J]. Communications, IEEE Transactions on, 2002, 50(5): 808-821.
[8]Remley K A, Young W F, Healy J. Analysis of Radio-propagation Environments to Support Standards Development for RF-based Electronic Safety Equipment[R]. NIST TN 1559, 2012: 1-54.
[9]黄美发, 景晖, 匡兵, 等. 基于拟蒙特卡罗方法的测量不确定度评定[J]. 仪器仪表学报, 2009, 30(1): 120-125.
[10]方兴华,宋明顺,顾龙芳, 等. 基于自适应蒙特卡罗方法的测量不确定度评定 [J]. 计量学报, 2016, 37(4): 452-456.
[11]Stumper U, Schrader T. Influence of different configurations of nonideal calibration standards on vector network analyzer performance[J]. Instrumentation and Measurement, IEEE Transactions on, 2012, 61(7): 2034-2041.
[12]ITU. Recommendation ITU-R P.1407-1: Multipath propagation and parameterization of its characteristics[R]. 2003: 1-106.
[13]Bian X, Zhou X, Fang H, et al. Application of Data Visualization and Numerical Analysis for Evaluating Propagation of Uncertainty[J].Applied Mechanics and Materials, 2011,103: 343-347.
[14]He R, Molisch A F, Tufvesson F, et al. Vehicle-to-Vehicle Propagation Models With Large Vehicle Obstructions[J]. Intelligent Transportation Systems, IEEE Transactions on, 2014, 15(5): 2237-2248.
[15]Agilent. Vector Network Analyzer Uncertainty Calculator[Z/OL]. [2014-12-20]. http://www.keysight.com/main/software.jspx?cc= CN&lc=chi&nid=-536902639.350794.02&id=1000000418:epsg:sud&cmpid=93648 |
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