Figure 1 (IMAGE) IMDEA Networks Institute Caption Angle of arrival (AoA) estimation at low frequency (2.45GHz). The set-up includes an antenna array of 4 elements. We use the algorithm MUSIC in order to estimate the AoA of the signal received. Credit © IMDEA Networks Institute Usage Restrictions This image may only be used with appropriate caption or credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.