Abstract
An algorithm to automatically recognize interferences is proposed to solve the problem that we can't take the right interference suppression method to improve the performance of direct sequence spread spectrum (DSSS) communication system because of the unknown interference types. First, the mathematical models of 8 types of important interferences in DSSS system are described; Then, the features of interferences from time domain, frequency domain and time-frequency domain are extracted; And finally, a five-order automatic interference recognizer based on decision tree support vector machine is constructed, and the automatic recognition of the interferences is realized. Simulation results demonstrate that the proposed algorithm provides a very high recognition rate when ISR is not lower than 9dB.
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