面向6G通信感知一体化的40～50 GHz毫米波信道反射和透射特性研究

王洋; 刘越洋; 廖希; 周继华; 宋浩正; 任明浩; 陈前斌

doi:10.11999/JEIT221560

面向6G通信感知一体化的40～50 GHz毫米波信道反射和透射特性研究

doi: 10.11999/JEIT221560

王洋^{1, 2},
刘越洋¹,
廖希^{1, 2, ,},
周继华^{2, 3},
宋浩正¹,
任明浩¹,
陈前斌¹

1.
重庆邮电大学通信与信息工程学院重庆 400065
2.
复杂环境通信重庆市重点实验室重庆 400030
3.
航天新通科技有限公司重庆 401332

基金项目: 国家自然科学基金(62271095, 62171071)，重庆市自然科学基金(cstc2021jcyj-msxmX0634)，重庆市自然科学基金创新发展联合基金重点项目(CSTB2022NSCQ-LZX0073)

详细信息

作者简介:
王洋：男，博士，教授，研究方向为毫米波太赫兹信道测量与建模、涡旋电磁波、智能反射面等

刘越洋：男，硕士生，研究方向为太赫兹信道测量与建模

廖希：女，博士，副教授，研究方向为毫米波太赫兹信道测量与建模、涡旋电磁波通信、通信感知一体化信道建模等

周继华：男，博士，研究员，研究方向为复杂环境高可靠通信、通信网络、TSN等

宋浩正：男，硕士生，研究方向为太赫兹信道测量与建模

任明浩：男，硕士，研究方向为毫米波信道测量与建模

陈前斌：男，博士，教授，研究方向为5G/6G通信、智能网络、人工智能等

通讯作者:
廖希　liaoxi@cqupt.edu.cn

中图分类号: TN929.5
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- 被引次数: 0
出版历程
- 收稿日期: 2022-12-19
- 修回日期: 2023-06-11
- 网络出版日期: 2023-06-19
- 刊出日期: 2024-01-17

Research on Reflection and Transmission Characteristics of the Millimeter Wave Channel at 40～50 GHz for 6G ISAC

WANG Yang^{1, 2},
LIU Yueyang¹,
LIAO Xi^{1, 2
, ,},
ZHOU Jihua^{2, 3},
SONG Haozheng¹,
REN Minghao¹,
CHEN Qianbin¹

1.
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2.
Chongqing Key Laboratory of Complex Environment Communication, Chongqing 400030, China
3.
Aerospace Xintong Technology Co., LTD., Chongqing 401332, China

Funds: The National Natural Science Foundation of China (62271095, 62171071), The Natural Science Foundation of Chongqing (cstc2021jcyjmsxmX0634), The Natural Science Foundation Innovation and Development Joint Fund Project of Chongqing (CSTB2022NSCQ-LZX0073)

摘要

摘要: 为解决毫米波信道反射和透射特性测量数据不足、多层材料传播系数计算不准确和传播特性表征不明的问题，该文开展面向6G通信感知一体化(ISAC)的40～50 GHz毫米波信道反射和透射特性研究。首先，基于菲涅尔理论和射线弹跳追踪原理，提出一种室内多层建筑材料传播系数计算方法；然后，利用基于矢量网络分析仪的毫米波信道测量平台，开展40～50 GHz频率范围内多层木板和多层玻璃的反射和透射系数测量活动。结果表明，该方法与测量值间高度吻合，传播系数误差低于0.1，能够准确地刻画毫米波信道反射和透射特性变化规律。此外，研究还发现反射系数谐振特性和有效布儒斯特角特性依赖于电波极化、入射角和材料厚度。
- 6G /
- 通信感知一体化 /
- 毫米波信道 /
- 信道测量 /
- 信道特性
Abstract: Considering the insufficient measurements for reflection and transmission characteristics of millimeter-wave channel and inaccurate calculation methods for propagation coefficients of multilayer building materials, an extensive investigation on the reflection and transmission characteristics of millimeter-wave channel at 40–50 GHz is conducted for 6G Integrated Sensing And Communications (ISAC). Firstly, a method for calculating propagation coefficients of multilayer building materials is proposed based on Fresnel theory and shooting and bouncing ray principle. Furthermore, extensive measurement campaigns at 40–50 GHz are carried out to obtain reflection and transmission coefficients of multilayer wood and glass using VNA-based millimeter-wave channel sounder. The results show that the measured values are in good agreement with the theoretical values and the propagation coefficient error is less than 0.1, which verify the accuracy and effectiveness of the proposed method. Besides, it is also found that the resonant period and effective brewster angle of reflection coefficient are dependent on polarization, incident angle, and material thickness.
- 6G /
- Integrated Sensing And Communications (ISAC) /
- Millimeter-wave channel /
- Channel measurement /
- Channel characteristic

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图 1 基于射线场追踪的反射和透射传播示意图

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图 2 多层材料内部的多次反射和多次透射传播机理

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图 3 被测材料实物图

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图 4 材料测量示意图及天线方向图

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图 5 3种被测材料在不同入射角下的反射系数和透射系数

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图 6 多层材料TE极化反射系数的谐振特性

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图 7 TM波反射系数布儒斯特角特性

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表 1 测量参数设置

测量参数	取值	测量参数	取值
中心频率(GHz)	45	天线类型	喇叭天线
频率带宽(GHz)	10	极化类型	水平/垂直
扫频点数	1001	天线高度(cm)	60
频点间隔(MHz)	10	发射功率(dBm)	0
中频带宽(kHz)	2	测量半径(cm)	50

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表 2 多层材料几何参数和电磁参数

被测材料	几何参数					电磁参数
被测材料	长度(cm)	宽度(cm)	粗糙度(μm)	总厚度(mm)	各层厚度(mm)	${\varepsilon _r}$	$\sigma $ (S/m)
3层木板	76.8	42.0	0.349	13.58	第1层：2.52	2.17	0.60
					第2层：8.54	2.06	0.20
					第3层：2.52	2.17	0.60
3层玻璃1	60.0	60.0	0.192	15.33	第1层：4.40	6.34	0.14
					第2层：6.53	1.00	0
					第3层：4.40	6.34	0.14
3层玻璃2	60.0	60.0	0.192	20.41	第1层：4.40	6.34	0.14
					第2层：11.61	1.00	0
					第3层：4.40	6.34	0.14

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表 3 TE极化不同入射角下传播系数波动区间与拟合误差

被测材料	入射角 (°)	传播系数波动区间			误差PCE
被测材料	入射角 (°)	Γ_mea	T_mea	S_mea	误差PCE
3层木板	15	0.22-0.32	0.74-0.75	0.60-0.62	0.0480
	30	0.28-0.36	0.67-0.68	0.68-0.71	0.0559
	45	0.34-0.40	0.56-0.59	0.71-0.73	0.0675
	60	0.42-0.55	0.43-0.51	0.72-0.75	0.0768
	75	0.56-0.63	0.34-0.39	0.70-0.76	0.0801
3层玻璃1	15	0.22-0.75	0.50-0.72	0.40-0.66	0.0247
	30	0.24-0.85	0.39-0.70	0.39-0.75	0.0285
	45	0.20-0.90	0.37-0.52	0.36-0.80	0.0328
	60	0.35-0.91	0.05-0.48	0.24-0.84	0.0641
	75	0.39-0.97	0.02-0.65	0.29-0.65	0.0594
3层玻璃2	15	0.17-0.83	0.48-0.75	0.26-0.67	0.0480
	30	0.21-0.90	0.38-0.68	0.35-0.74	0.0559
	45	0.21-0.91	0.37-0.52	0.25-0.83	0.0675
	60	0.39-0.91	0.08-0.59	0.31-0.91	0.0768
	75	0.31-0.98	0.02-0.28	0.26-0.92	0.0801

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表 4 毫米波信道反射系数的谐振周期

被测材料	谐振频率间隔 (GHz)	入射角(°)
被测材料	谐振频率间隔 (GHz)	15	30	45	60	75
3层木板	测量值	4.47	4.56	4.86	5.21	5.94
3层木板	理论值	4.45	4.51	4.80	5.15	5.83
3层玻璃1	测量值	5.62	6.07	7.09	6.38	>10
3层玻璃1	理论值	5.60	6.04	7.02	6.30	>10
3层玻璃2	测量值	4.06	4.17	4.30	5.24	>10
3层玻璃2	理论值	4.03	4.10	4.20	5.13	>10

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