东南大学学报（英文版）2007，Vol.23Issue(2)：151-155,5.
基于FDTD方法的2.4/5.2/5.7 GHz穿戴式躯域传感器网络体表信道特征分析
On-body propagation characterization based on FDTD method for 2.4/5.2/5.7 GHz wearable body sensor networks
摘要
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 timedomain method. The simulation is performed in the environment of free space with a simplified threedimensional 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 firstarrival 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 intersymbol interference from multiple-path delay.关键词
信道模型/路径损耗/时延特性/穿戴式躯域传感器网络Key words
channel model/path loss/time delay characteristics/wearable body sensor network分类
信息技术与安全科学引用本文复制引用
鲍淑娣,沈连丰,张元亭..基于FDTD方法的2.4/5.2/5.7 GHz穿戴式躯域传感器网络体表信道特征分析[J].东南大学学报（英文版）,2007,23(2):151-155,5.基金项目
The High Technology Research and Development Program of Jiangsu Province (No. BG2005001 ), the Hong Kong Innovation and Technology Fund (No. ITS/99/02). （No. BG2005001 ）
