Computer simulation of an automatic classification procedure for digitally modulated communication signals with unknown parameters

摘要: Abstract The surveillance and control of the broadcasting activity, especially in HF band, is a difficult task for authorities like post-office example. Even experienced people with modern special equipment are often unable to classify unknown, differently modulated signals real time. In this paper procedure described which allows an automatic time classification following modulation types: Amplitude-Shift Keying (ASK), Frequency-Shift (FSK) small frequency deviation, Phase-Shift (PSK). has been tested by simulation on computer proven be reliable robust against expected perturbing factors such as noise, mismatch centre or bandwidth, cross-talk adjacent channels. A more detailed discussion contained [1].