In-vivo MIMO Channel Characteristics Analysis and Modeling Based on Skin-fat Model at Terahertz Frequency

ZHANG Jie; YIN Jinghan; SHAO Yu; LIAO Xi; WANG Yang; YU Ziming

doi:10.11999/JEIT230578

Volume 46 Issue 4

Apr. 2024

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Article Navigation > Journal of Electronics & Information Technology > 2024 > 46(4): 1276-1285

ZHANG Jie, YIN Jinghan, SHAO Yu, LIAO Xi, WANG Yang, YU Ziming. In-vivo MIMO Channel Characteristics Analysis and Modeling Based on Skin-fat Model at Terahertz Frequency[J]. Journal of Electronics & Information Technology, 2024, 46(4): 1276-1285. doi: 10.11999/JEIT230578

Citation:

ZHANG Jie, YIN Jinghan, SHAO Yu, LIAO Xi, WANG Yang, YU Ziming. In-vivo MIMO Channel Characteristics Analysis and Modeling Based on Skin-fat Model at Terahertz Frequency[J]. Journal of Electronics & Information Technology, 2024, 46(4): 1276-1285. doi: 10.11999/JEIT230578

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In-vivo MIMO Channel Characteristics Analysis and Modeling Based on Skin-fat Model at Terahertz Frequency

doi: 10.11999/JEIT230578

ZHANG Jie^{1, 2},
YIN Jinghan¹,
SHAO Yu^{1
,
,},
LIAO Xi¹,
WANG Yang¹,
YU Ziming³

1.
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
2.
Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield S10 2TN, UK
3.
Huawei Technologies Co., Ltd., Chengdu 611731, China

Funds: The National Natural Science Foundation of China (62271095, 62171071), The Natural Science Foundation of Chongqing (cstc2021jcyjmsxmX0634, CSTB2023NSCQ-MSX0750), The Natural Science Foundation Innovation and Development Joint Fund Project of Chongqing (CSTB2022NSCQ-LZX0073)

Received Date: 2023-06-12
Rev Recd Date: 2023-12-27

Available Online: 2024-01-08

Publish Date: 2024-04-24

Abstract

Abstract

To investigate transmission characteristics of in-vivo Mmultiple Input Multiple Output (MIMO) communication systems at TeraHertz (THz) frequency, a precise skin-fat model is constructed at 0.8～1.2 THz. Full wave electromagnetic simulations are conducted on the vertical and horizontal links in the skin-fat model, the characteristics of terahertz in-vivo channel are analyzed, and a terahertz in-vivo path loss model is established. Firstly, the skin-fat model is constructed based on the dielectric properties of human tissue at terahertz frequency and the anatomical structure of human skin. Secondly, the path loss and shadow fading of the three links are compared and analyzed, and a terahertz in-vivo path loss model with equivalent absorption factor is proposed. Finally, the Rice K factor, the root mean square delay extension, and the MIMO capacity of the three links are analyzed. The results demonstrate that the terahertz in-vivo path loss model with equivalent absorption factor can more accurately describe the path loss of extended distance in vertical link 2, on-body transmitter can provide enhancement in MIMO capacity. This work can give an insight into the design and optimization of THz in-vivo communication systems.
- TeraHertz(THz),
- In-vivo communication,
- Multiple Input Multiple Output(MIMO),
- Channel characteristic

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References(24)

References

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