A novel chaotic communication scheme combining the continuous chaotic system with the digital communication channel is proposed

in which the chaotic modulation and demodulation module are realized with software and the continuous chaotic signals carrying the hidden information are transmitted in digital form.The designing method of the proposed communication scheme is described in detail and the optimal selections of the related parameters to balance the performances of the system in security

transmission rate and transmission quality are discussed.The proposed communication system is easy to practically realize and compared with the conventional digital communication system

the performance of the transmission rate and transmission quality is not lowered while the security of information transmission is obtained.