Wireless device classification through transmitter imperfections — Evaluation of performance degradation due to the chip heating

The wireless devices classification based on the transmitter imperfections is one of the promising ways to provide additional security to future wireless communication networks. Although several aspects, both theoretical and practical, have been studied recently, there are no studies investigating the degradation of such authentication due to the environmental changes, such as the device temperature. We present the initial results of measurements of RF-classification method based on the Gaussian mixture model classifier under the influence of temperature variations. With the use of the widely used USRP devices, we also try to estimate which of the RF impairments is sensitive to such changes.