10 GHz室内无线体域网无线信道测量与建模

doi:10.11959/j.issn.2096-3750.2022.00259

物联网学报 ›› 2022, Vol. 6 ›› Issue (1): 82-90.doi: 10.11959/j.issn.2096-3750.2022.00259

10 GHz室内无线体域网无线信道测量与建模

杨钦¹^,², 杨丽花¹^,², 任露露¹^,², 黄山虎¹^,², 刘加欢¹^,²

¹ 南京邮电大学江苏省无线通信重点实验室，江苏南京 210003
² 南京邮电大学通信与信息工程学院，江苏南京 210003

修回日期:2022-01-19 出版日期:2022-03-30 发布日期:2022-03-01
作者简介:杨钦（1996− ），男，南京邮电大学硕士生，主要研究方向为移动无线通信
杨丽花（1984− ），女，博士，南京邮电大学副教授、硕士生导师，主要研究方向为移动无线通信、通信信号处理、多载波通信系统等
任露露（1998− ），女，南京邮电大学硕士生，主要研究方向为宽带移动通信
黄山虎（1996− ），男，南京邮电大学硕士生，主要研究方向为移动无线通信
刘加欢（1995− ），男，南京邮电大学硕士生，主要研究方向为移动无线通信
基金资助:
江苏省自然科学基金项目资助(BK20191378);江苏省高等学校自然科学研究面上项目(18KJB510034);中国博士后科学基金资助项目(2018T110530);国家自然科学基金资助项目(92067201)

Measurement and modeling of wireless body area network propagation characteristics of indoor environment at 10 GHz

Qin YANG¹^,², Lihua YANG¹^,², Lulu REN¹^,², Shanhu HUANG¹^,², Jiahuan LIU¹^,²

¹ Jiangsu Key Laboratory of Wireless Communication, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
² School of Communications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Revised:2022-01-19 Online:2022-03-30 Published:2022-03-01
Supported by:
The Natural Science Foundation of Jiangsu Province(BK20191378);The Natural Science Research Project of Jiangsu Higher Education Institutions(18KJB510034);The China Postdoctoral Science Fund(2018T110530);The National Natural Science Foundation of China(92067201)

摘要/Abstract

摘要：

为了探索高频段室内无线体域网通信的可行性，对10 GHz室内无线体域网的传播特性进行测量与研究。基于大量的测量数据，给出了10 GHz频段室内无线体域网的路径损耗、阴影效应与均方根时延扩展的统计特性，并针对接收端身体角度变化的情况，提出了一种具有身体角度影响的路径损耗模型，该模型利用身体角度因子修正身体角度变化引入的路径损耗。同时，分析了接收端天线在人体不同高度时对路径损耗的影响。研究结果表明,路径损耗指数与身体角度呈二次函数关系，由身体角度引起的路径损耗（PBA, path loss in body angle）与身体角度之间的关系可以用带有系数的三角函数表示，且此系数与收发端之间的距离呈单调递减的指数函数关系。此外，当身体处于不同角度时，接收端天线位于人体不同高度时对路径损耗的影响比没有身体旋转角度时小。上述研究结果可以为未来10 GHz频段在室内无线体域网的使用提供理论基础与实践依据。

关键词: 无线体域网, 室内环境, 高频段, 路径损耗, 时延扩展, 身体角度

Abstract:

To explore the feasibility of high-frequency in indoor wireless body area network (WBAN) communication, the propagation characteristics of 10 GHz for WBAN in indoor scenario was given.Based on a large number of measurement data, the path loss, the shadow effect and the root-based delay spread of the 10 GHz were present, and a novel path loss model with the body angle was proposed, which utilizes the body angular factor to correct the path loss caused by the change of body angle.Meanwhile, the influence of receiving antenna at different heights of body on path loss was analyzed.Research results show that the path loss exponent has a quadratic function relationship with the body angle, the relationship between the path loss (PBA) caused by the body angle and the body angle can be expressed by a trigonometric function with a coefficient, which has a monotonously decreasing exponential function relationship with the distance between the receiving and sending ends.In addition, when the body is at different angles, the effect of the receiving ends in the human body on the path loss is smaller than when there is no body rotation angle.The above research results can provide the theoretical and practical basis for the use of 10 GHz indoor wireless body area network in the future.

Key words: wireless body area network, indoor environment, high frequency band, path loss, delay spread, body angle

中图分类号:

TN929.5

杨钦, 杨丽花, 任露露, 黄山虎, 刘加欢. 10 GHz室内无线体域网无线信道测量与建模[J]. 物联网学报, 2022, 6(1): 82-90.

Qin YANG, Lihua YANG, Lulu REN, Shanhu HUANG, Jiahuan LIU. Measurement and modeling of wireless body area network propagation characteristics of indoor environment at 10 GHz[J]. Chinese Journal on Internet of Things, 2022, 6(1): 82-90.

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参考文献 22

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VNA参数	参数数值	VNA参数	参数数值
中心频率	10 GHz	最大时延	400 ns
频率点数	801	带宽	2 GHz
频率步长	2.5 MHz	时延分辨率	0.5 ns

距离/m	系数A的值	距离/m	系数A的值
1	19.94	3.5	10.92
1.5	17.07	4	9.578
2	13.95	4.5	9.28
2.5	14.31	5	9.243
3	11.45	/	/

身体角度	路径损耗指数	身体角度	路径损耗指数
0°	1.905	225°	0.719 6
45°	1.341	270°	0.966 8
90°	0.833 9	315°	1.595
135°	0.849 7	360°	1.947
180°	0.431 6	/	/

高度/m	身体角度
高度/m	0°	90°	180°	270°
1.7(头部)	61.480 2 dB	67.265 5 dB	67.667 0 dB	68.148 0 dB
1(腰部)	57.906 0 dB	68.021 3 dB	68.130 7 dB	65.532 6 dB
0.7 (腕部)	57.648 2 dB	66.787 1 dB	67.281 2 dB	67.373 8 dB

身体角度	时延扩展均值/ns	时延扩展标准差
0°	8.272 6	1.883 2
90°	21.205 7	3.607 3
180°	22.970 0	1.595 8
270°	20.004 1	3.010 5

10 GHz室内无线体域网无线信道测量与建模

Measurement and modeling of wireless body area network propagation characteristics of indoor environment at 10 GHz

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身体角度	μ	σ
0°	-18.635 6	0.224 8
90°	-17.683 3	0.168 9
180°	-17.591 5	0.007 7
270°	-17.735 8	0.016 6

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