Abstract:

In order to improve the reliability and safety of information transmission in the spread spectrum communication system, a kind of spreading code constructed by means of a combination of generalized complex multi-scroll Jerk-Chua chaos and selfcoded is proposed. Firstly a new nonlinear fusion function citing by construct ideas of two-dimensional Henon transform and discrete standard mapping is produced. Then the complex multi-scroll Jerk-Chua chaos sequence is combined with the auto regressive (AR) self-coded sequence by the fusion function to generate a high quality composite random sequence as a new spreading code. Finally Matlab simulation tests show that the algorithm generating random sequence has the higher complexity and the better randomness and correlation compared with existing methods. Bit error rate has been improved in spread spectrum communication system. The transmission of information security under high security and dynamic changing conditions can be met.