Data communication system with automatic frequency sweep in FM broadcast subchannel and continuous phase frequency-shift keying


  • Inventors: QINGXU XIONG
  • Assignees: 熊庆旭
  • Publication Date: January 12, 2000
  • Publication Number: CN-1241073-A


A continuous phase-frequency shift keying (CPFSK) data communication system features that the wireless communication of data is realized in subcarrier channel of frequency-modulated broadcast. In theimplementation, CPFSK digital modulation mode, switch sampling technique and coherent demodulation by means of pilot signal of frequency-modulated broadcast are used to realize the automatic frequency sweep in full frequency range (88-108 MHz) of frequency-modulated broadcast and locking the receiving frequency.




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