ABSTRACT

For Hybrid Waveform, the spectra of analog FM signal and digital signal are combined in a fixed way, which put digital signal on about 130 kHz away from carrier. However, the bandwidth of analog FM signals change as audio signal’s frequency and amplitude change. It is much less than 100 kHz and has a large MSE. Under this circumstance, the real-time changes of the bandwidth may cause a lot of spare spectra. The bandwidth, in this paper, means the distance away from the carrier in Single Side Band (SSB).