Research On Communication Application Based On Chaos Theory

For similarity randomicity and sensitivity of chaos sign, there is great predominanceof chaos communication. Therefore, chaos communication is still set stored bypeople. Even there are many reports on the theory analysis of chaos communication,however, the research on chaos communication system is still much juvenility atpresent. There are many fields to improve and do the farther research. At present, thatuses the chaos sign to practicality application, there are the problems to research below:1. the variety of chaos sign bring the problem to system design. Contraposingdifferent mode of chaos communication, how to select the appropriate chaos sign isgood for doing the further research.2. chaos sign ties up wider bandwidth, channel noise and interfere can produce themore influence to the communication performance, so the analysis of performance ofchaos communication in the practicality is the emphases of research.Therefore, this paper contrapose the existing communication system, do theresearch on the practicality of chaos communication. Firstly, Because the chaosbandwidth communication needs the chaos sign with higher frequency and betterperformance of bandwidth, we analyzes the Colpitts circuit thoroughly, moreover at thefoundation of this, we bring forward the more excellent bandwidth performance ofColpitts surge circuit with RLC circuit, meanwhile, we get the results to be accordant tothe theory analysis overpass simulation with of Multisim. Secondly, Affiliating theinterfere into the channel, we analyze the modulation manner of Chaos ShiftKeying(CSK), we analyze the Difference Chaos Shift Keying(DCSK), bring forward aupswing scheme of DCSK, the Bit Error Rate of new scheme improve in some degree,meanwhile, the velocity of information of system also improve obviously. Finally, usingexisting communication system, using the selected chaos sequence to replace theconventional PN code to process spread spectrum communications. We do the analysisthe circumstance with seeds of interfere, and realize the simulation with Simulink, inorder to make better foundation for the analysis and application of chaoscommunication.