Analysis Of Multi-signal Modulation Recognition Technology

Communication technology is developing quickly, digital communication plays an more important role. As we know, signal modulation technology is very important. Automatic modulation recognition type of signal has become an important research topic. It mainly used to solve a single signal, so it cannot be used to identify the signal any more. Therefore, looking for more and better solution is imminent.Under the background of this article is in non-cooperative communication, the conventional narrow-band signal as the research object, to study more with channel signal modulation identification problem. First of all, this article use the method of statistical pattern recognition to solve the signal modulation recognition, he more the signal modulation identification problem analysis is introduced in detail, summarizes two basic types of signal modulation recognition methods; Contact from multiple signals waveform directly extracted characteristic signal modulation recognition method., the signal modulation identification problem analysis is introduced in detail, summarizes two basic types of signal modulation recognition methods. The main research content and research key points as follows:First of all, the more the signal modulation identification problem analysis is introduced in detail, summarizes two basic types of signal modulation recognition methods:based on the characteristics of signal separation and direct extraction signal modulation recognition method.Second, the study analyzed the problems of feature extraction, he more the signal modulation identification problem analysis is introduced in detail, summarizes two basic types of signal modulation recognition methods, and the higher order spectrum and the definition of high order moment and estimate is studied.Again, he more the signal modulation identification problem analysis is introduced in detail, and introduced the characteristics of multiple tags and he more the signal modulation identification problem analysis is introduced in detail, summarizes two basic types of signal modulation recognition methods.Finally, the specific research and analysis the various identification classification method, and several digital signal recognition simulation is given. Contact from multiple signals waveform directly extracted characteristic signal modulation recognition method, and computer simulation, obtained the certain result, give an analysis of the simulation results.