PHASE SPLITTING DIFFERENTIAL CHAOS SHIFT KEYING COMMUNICATION METHOD BASED ON HYBRID SYSTEM

摘要

The present invention provides a phase splitting differential chaos shift keying communication method based on a hybrid system, comprising steps of: step 1, setting communication system parameters; step 2, preparing binary information to be transmitted; step 3, generating a chaotic signal; step 4, preparing to transmit the signal; step 5, receiving and demodulating the signal; step 6, performing chaotic matching filtering on the demodulated signal; step 7, sampling and extracting an optimal signal-to-noise ratio point; and step 8, determining the polarity of symbols, and decoding the symbols to obtain a recovered signal, thereby completing communication. Compared with a conventional DCSK scheme, adopting the method of the present invention obtains higher communication rates, lower error rates, and realizes good bit error rate performance despite low signal-to-noise ratios in a complex channel, thereby improving the reliability of a communication device, and achieving compatibility with existing communication devices.