Measurement and Modeling of Urban Man-Made Radio Noise Based on Software-Defined Radio
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Abstract
With the rapid increase in the variety and quantity of electronic devices, man-made radio noise levels have significantly changed. As a result, calculation methods and reference values for man-made radio noise provided by the International Telecommunication Union (ITU) are no longer sufficient to meet the current requirements for the design and performance evaluation of radio systems. Therefore, the measurement and analysis of man-made radio noise in urban areas are important. Software-Defined Radio (SDR) has become a key tool for radio noise measurement. A measurements of urban man-made radio noise based on USRP X310 SDR platform was conducted in Qingdao. An improved interference signal processing method was proposed, and a new urban man-made radio noise model was developed. Comparison showed that the new model obtained more accuracy than the ITU-R P.372-17 model, meanwhile its maximum applicable frequency extended from 250MHz to 500MHz. Data analysis reveals that current urban radio noise levels are significantly higher than the reference values reaccommodated by the ITU-R P.372-17. The new model provide foundational support for spectrum planning, interference analysis, and signal detection.
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