Characterization and modeling of dynamic on-body propagation

On-body communication channels are of increasing interest as more and more wireless devices are wearable in medical, military, and personal communication applications. This paper presents an experimental investigation of the dynamic feature of on-body channel due to the movement of human body. Statistical analyses, including level crossing rate, fading duration, and fading interval were conducted. Based on the analyses, a three-state Fritchman model that considers the channel dwelling time is proposed to describe the dynamic characteristic of on-body channel. The channel is classified as unstable good state, constant good state, and bad state. The parameters of the Fritchman model are estimated from the measured data.