• Title/Summary/Keyword: 소프트웨어 정의 라디오

Search Result 11, Processing Time 0.015 seconds

RF Fingerprinting Scheme for Authenticating 433MHz Band Transmitters (433 MHz 대역 송신기의 인증을 위한 RF 지문 기법)

  • Young Min, Kim;Woongsup, Lee;Seong Hwan, Kim
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.27 no.1
    • /
    • pp.69-75
    • /
    • 2023
  • Small communication devices used in the Internet of Things are vulnerable to various hacking because they do not apply advanced encryption techniques due to their low memory capacity or slow computation speed. In order to increase the authentication reliability of small-sized transmitters operating in 433MHz band, we introduce an RF fingerprint and adopt a convolutional neural network (CNN) as a classification algorithm. The preamble signal transmitted by each transmitter are extracted and collected using software-defined-radio to constitute a training data set, which is used for training the CNN. We tested identification of 20 transmitters in four different scenarios and obtained high identification accuracy. In particular, the accuracy of 95.8% and 92.6% was obtained, respectively in the scenario where the test was performed at a location different from the transmitter's location at the time of collecting training data, and in the scenario where the transmitter moves at walking speed.