WSC '78 Proceedings of the 10th conference on Winter simulation - Volume 1
Antennas And Propagation for Body-Centric Wireless Communications
Antennas And Propagation for Body-Centric Wireless Communications
Characterization of the dynamic narrowband on-body to off-body area channel
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
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The goal of this paper is to address a statistical approach for modelling the influence of body dynamics on the gain pattern of wearable antennas in Body Area Networks, particularly in off-body radio channels. A dynamic model was developed based on Motion Capture data, describing a realistic human body movement. Antennas are located on 4 typical positions (i.e., Head, Chest, Arm and Leg), for which statistics of antenna orientation (i.e., average and standard deviation of elevation and azimuth angles) were calculated for 2 dynamic scenarios, i.e., Walk and Run. Based on the rotation of the antenna, the statistics of gain patterns of a wearable patch antenna operating at 2.45 GHz were calculated. The standard deviation of the change in the antenna orientation is the highest for the Arm location, reaching $$19^{\circ }$$ 19 驴 and $$37^{\circ }$$ 37 驴 for the Run scenario, for elevation and azimuth angles, respectively. For most of the scenarios, the distribution of the change in antenna orientation fits well to a Kumaraswamy distribution (using the $$\chi ^2_{95\,\%}$$ 驴 95 % 2 test). For all antenna positions and the Walk scenario, the standard deviation is $$ 4 驴 .