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Digital Implementation of Incoherent Demodulation of FSK Signal

  • 2013-09-22
  • 207.03KB
  • Points it Requires : 2

  When the demodulation of frequency shift keying signals adopts the incoherent method, the extraction of signal envelope and timing requires a highly selective narrowband filter, while the comb spectrum IIR filter can achieve filtering with extremely narrow passband width. Taking 2FSK as an example, the implementation principle of the all-digital FM demodulator is introduced, and the technical solution of using infinite loop accumulation digital comb filter to realize FM signal envelope detection and timing extraction is discussed in detail. The actual engineering implementation proves the effectiveness of this solution.

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