L. Xinfeng, Hao Xiaojun, Wang Liandong, Zeng Yonghu, H. Hui
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Research on in-band electromagnetic interference effect of communication system
In order to analyze the electromagnetic compatibility of communication system, a test method based on symbol error rate (SER) is proposed, then the experimental system was built. The influence of in-band electromagnetic interference on communication system was studied, and the mechanism was got. The results indicate that for the same frequency interference, the SER increase slowly in the front 2 dBm range, the later 1 dBm, the SER increases rapidly until the SER gets 0.47, then the SER remain unchanged, the interference power is always proportionate to the transmit power. The quality of message is damaged when the SER gets 10-2 level, and the display screen crashes when the SER is 0.47. In the transmit frequency 2 MHz range, the communication system is easy to be disturbed.
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