Human Body Model for Channel Characterization Based on Ray-Tracing

Abstract

The propagation channel around human body will fluctuate due to the body effects, so it is essential to investigate the body channel. As an important method of channel modeling, ray-tracing (RT) is affected by the human body model. In this paper, a realistic human body is modeled with the idea of greedy algorithm. Based on the RT simulation and measurement results of path loss (PL), we derive the approximate shapes of the torso, head, arms, and legs, and propose a reference human body model whose credibility and accuracy have been verified at 2.4 GHz and 60 GHz. These results prove that the simulation results based on the reference human body model are in good agreement with the measurement values. In addition, the reference human body model can be adjusted according to the realistic dimension data of body.

THz Measurements, Antennas, and Simulations: From the Past to the Future

“…Previously, a human body model with low complexity is employed to evaluate its influence on channel characterization in blockage situations with the help of ray-tracing simulations. The human is predominantly portrayed as a cylinder shaped model with additional spheres or prisms representing body parts like heads, arms and legs thus enhancing it to resemble the real shape of humans [127], [128], as can be seen in Fig. 7.…”

A Novel Channel Characterization Method Based on Ray Tracing for Human Fall Scenario

“…The [4] simulates the path loss parameters of human surface wireless channel at 60 GHz for both standing and crawling postures. In [5], the human head, torso and legs are modeled as prisms, the arms are modeled as cylinders, and the shadow effect of human body at 2.4 GHz and 60 GHz is characterized by RT simulation. However, most of the studies focuse on the additional loss caused by human shadows, the impact of human movements on the wireless channel is rarely been described.…”