FREQUENCY MODULATED SPREAD SPECTRUM MODULATION METHOD, MODULATOR, AND FREQUENCY MODULATED SPREAD SPECTRUM DEMODULATION METHOD, DEMODULATOR

A frequency modulated spread spectrum modulation method and modulator and a frequency modulated spread spectrum demodulation method and demodulator are provided. The modulation method includes: determining bit information to be transmitted, where the bit information includes one of N bit sequences and N is a positive integer; generating modulation waveforms corresponding to the bit sequences, where different bit sequences in the N bit sequences have a one-to-one correspondence with different modulation waveforms, and the different modulation waveforms have different feature information; and modulating a carrier signal by using the modulation waveform corresponding to the determined bit information to acquire a modulated signal. With the above solution, an amount of information included in the modulation waveform can be increased effectively, thereby being beneficial to increase a data rate in a signal transmission process.