Xi'an University of Technology

Chao Bai

Haipeng Ren

Jie Li

Junliang Yao

a chaotic shape-forming and corresponding matched filter-based wireless communication method is provided, and the method includes that: 1) data to be transmitted is prepared; 2) chaotic shape-forming filter is performed on a digital symbol to be transmitted to generate a baseband signal; 3) the baseband signal is transmitted and transferred by use of a radio frequency component and transmitting antenna of a conventional wireless communication system; 4) a wireless signal is received by use of a conventional receiving antenna, and down-carrier process is performed on the received signal to obtain a received baseband signal; 5) matched filter is performed on the received baseband signal; 6) wireless channel estimation and multipath interference cancellation judgment threshold calculation are performed; and 7) sampling judgment is performed on an output signal of matched filter, symbol sampling is performed on the output signal of the matched filter in Step 5), and the sampled signal is judged by use of a judgment threshold calculated in Step 6) to obtain a decoded output signal.

Chaotic shape-forming and matched filter-based wireless communication method

A communication method for phase separation differential chaos shift keying (DCSK) based on a second order hybrid system (SOHS) is provided. The method includes the following steps. At Step 1: communication system parameters are set. At Step 2: binary information to be transmitted are prepared. At Step 3: the chaotic signal u(t) is generated. At Step 4: the chaotic signal is prepared to be transmitted. At Step 5: a received signal is demodulated. At Step 6: a chaotic matched filtering operation is performed on the demodulated reference signal and the demodulated information bearing signal. At Step 7: optimal signal to noise ratio (SNR) points are extracted in a sampling way. At Step 8: polarity of each symbol is determined to obtain a recovered signal.

Communication method for phase separation differential chaos shift keying based on second order hybrid system

The present disclosure discloses an M-ary DCSK method based on chaotic shape-forming filtering. The method includes the following steps: at S1, parameters of a communication system are set; at S2, HP information and LP information to be sent in each time slot are prepared; at S3, the information to be sent is modulated; at S4, a chaotic carrier is generated through a chaotic shape-forming filter; at S5, a transmitted signal is prepared; at S6, down-carrier frequency and matched filter is performed to a received signal; at S7, the sampling of a maximum SNR point is performed to an output signal of a matched filter; at S8, the decision of high priority information bits is resumed; and at S9, the decision of low priority information bits is resumed.

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Shaanxi, China

Chao Bai