Measurement and functional validation of detect and avoid ultra wideband devices

Ultra Wideband (UWB) radio regulations have been discussed in recent years because of the potential interference of UWB radios to other radio systems with which they share the spectrum. A mitigation technique for UWB devices named Detect and Avoid (DAA) has been proposed as a potential solution to reduce the risk of interference. DAA testing presents specific challenges related to the low emission power of UWB devices, the validation of spectrum sensing algorithms and timing considerations. This paper presents the design of a test bed to validate the correct implementation of DAA mitigation techniques by UWB devices. It describes the testing challenges and the related test bed design solutions for both radiated and conducted test methods. A number of measurement campaigns on UWB devices with detect-only capabilities were separately conducted at three different test beds facilities. The measurements results are analyzed and compared.