Contents I. Introduction
Body-centric wireless communication has been an active area of research in recent years, due to the increasing demand of technologically capable and advanced commercial personal electronic devices. Examples of such are smartphones, smartwatches, earbuds, and hearing instruments (HIs). When body-worn devices communicate wirelessly across the human body, it is referred to as on-body communication. The quality of such wireless links, depends on a number of factors. These include, but are not limited to, the distance between the transmitter and receiver, the shape of the section of the body in between, body posture, and the design of the antennas. In general, it is difficult to design an on-body device, that will work equally well on all its intended users. Often, a standard computer-aided-design model is used in the design process, and the performance of the product is optimized to work well on this standard model. However, due to the large number of factors, specific to the individual user, some of which were mentioned above, that influence the quality of the wireless connection, between the designed product and other on-body products, with which it is intended to communicate, it is not guaranteed that the product works well for all users. Thus, it is desirable to be able to predict the link quality for a representative sample of the intended user population, during the design process.
