Indoor channel characterisation for a wearable antenna array at 868 MHz
Indoor channel characterisation for a wearable antenna array at 868 MHz
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868 MHz 下可穿戴天线阵列的室内信道表征
DOI：
10.1109/wcnc.2006.1696566
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
W. Scanlon
中科院分区：
文献类型：
--
作者：
S. Cotton;W. Scanlon
相关信道的测量是在868 MHz的室内环境中移动的8个体戴天线的阵列。一阶和二阶统计方法被用来研究天线定位和人体相互作用对每个天线元件所经历的衰落的影响。天线放置在身体较低位置时，平均接收信号强度降低。在上躯干的接收器位置上观察到接收信号功率的最大变化。结果还表明，减少交叉率经历了手腕佩戴天线。当与单个分支相比时，对于四个身体上的元件，选择组合分集配置被示出为显著地减少衰落深度多达6 dB
Correlated channel measurements were made for an array of 8 bodyworn antennas moving in the indoor environment at 868 MHz. First and second-order statistical methods were used to investigate the effect of antenna positioning and human body interaction on the fading experienced by each antenna element. Average received signal strength was reduced for antenna placements lower on the body. The maximum variation in received signal power was observed for receiver positions on the upper torso. The results also show that reductions in crossing rates are experienced for wrist-worn antennas. A selection combination diversity configuration was shown to significantly reduce fade depths by as much as 6 dB for four on-body elements when compared to a single branch