The positioning accuracy that can be achieved using communication over a wireless link between transceivers is envisioned to be improved by the introduction of multiple antenna elements at the RF-devices.

This thesis will focus on the problems that arise in off-body radio channels, with the human body as a main source of interference. Non-line-of-sight (NLOS) and multipath propagation will be examined as critical components for enabling robust and high precision localization algorithms. By using ultra-wideband (UWB) signals in combination with antenna arrays, a fine spatial resolution can be achieved.

In the initial theoretical part of the thesis the achievable accuracy for angle-of-arrival (AoA) and time-of-arrival (ToA) estimation in terms of the CRLB is examined. The ultimate goal is to implement algorithms for positioning and tracking of an RF device in off-body channels, incorporating the human body in the signal model for increased robustness.