Exploring the Feasibility of Indoor Human Positioning by Using Radio Channel Properties of a Single Link

This paper explores the feasibility of positioning human by using a single link of multiple-input multiple-output radio channel without ultra-wide bandwidth. While the background channel is measured without the presence of person, the current channel is measured with person(s) standing at several locations in a meeting room facing either in parallel or in orthogonal to the direct line between transmit and receive antennas. The background and current channels are compared by means of the power delay profile, the power angular spectrum, and the estimated plane wave paths. It is found that both the detection and the positioning of person(s) are feasible using the variations of radio channel properties, but extra algorithm and specific deployment are needed for positioning accurately.