Impact of antenna pattern on UWB time-based ranging

The accurate estimation of time-of-arrival in a dense multipath environment is vital for reliable performance of time-based ranging techniques. The radiation pattern of antennas used for the user-terminals (UT) and access-point (AP) sensors in localization applications have significant effect on the system performance. This paper introduces a technique to synthesize the channel impulse responses (CIR) while specific antenna pattern is used at AP node. The proposed methodology provides the opportunity to examine ranging performance with different type of antenna without any need to repeat channel measurements. The influence of antenna orientation and directivity are investigated by using this methodology. The preliminary results are presented.