Analysis of Wireless Communication System Based on Magnetic Field Coupling

This paper mainly studies the magnetic induction wireless communication system based on electric vehicle wireless charging system in different environments. In this paper, the common signal modulation and demodulation methods are analyzed, and the binary digital amplitude modulation is selected as the signal modulation method of the experimental system. The basic structure of the magnetic coupling communication system for electric vehicles is designed and built. The influence of coil placement position and different dielectric conductivity on the bit error rate of the communication system under the same noise signal-to-noise ratio is studied and analyzed. The system communication performance, channel resonance circuit design and different modulation methods are compared and analyzed.