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[1] Bao Shudi, Shen Lianfeng, Zhang Yuanting, et al. On-body propagation characterization based on FDTD methodfor 2.4/5.2/5.7 GHz wearable body sensor networks [J]. Journal of Southeast University (English Edition), 2007, 23 (2): 151-155. [doi:10.3969/j.issn.1003-7985.2007.02.001]
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On-body propagation characterization based on FDTD methodfor 2.4/5.2/5.7 GHz wearable body sensor networks()
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
23
Issue:
2007 2
Page:
151-155
Research Field:
Information and Communication Engineering
Publishing date:
2007-06-30

Info

Title:
On-body propagation characterization based on FDTD methodfor 2.4/5.2/5.7 GHz wearable body sensor networks
Author(s):
Bao Shudi1;  2;  Shen Lianfeng1;  Zhang Yuanting2
1National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
2Joint Research Centre for Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong, China
Keywords:
channel model;  path loss;  time delay characteristics;  wearable body sensor network
PACS:
TN929.5
DOI:
10.3969/j.issn.1003-7985.2007.02.001
Abstract:
The on-body path loss and time delay of radio propagation in 2.4/5.2/5.7 GHz wearable body sensor networks(W-BSN)are studied using Remcom XFDTD, a simulation tool based on the finite-difference time-domain method.The simulation is performed in the environment of free space with a simplified three-dimensional human body model.Results show that the path loss at a higher radio frequency is significantly smaller.Given that the transmitter and the receiver are located on the body trunk, the path loss relevant to the proposed minimum equivalent surface distance follows a log-fitting parametric model, and the path loss exponents are 4.7, 4.1 and 4.0 at frequencies of 2.4, 5.2, 5.7 GHz, respectively.On the other hand, the first-arrival delays are less than 2 ns at all receivers, and the maximum time delay spread is about 10 ns.As suggested by the maximum time delay spread, transmission rates of W-BSN must be less than 108 symbol/s to avoid inter-symbol interference from multiple-path delay.

References:

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Memo

Memo:
Biographies: Bao Shudi(1977—), female, graduate;Shen Lianfeng(corresponding author), male, professor, lfshen@seu.edu.cn.
Last Update: 2007-06-20