基于MIMO的置换索引差分混沌移位键控技术研究OA

In order to solve the problems of low BER performance and low transmission rate of traditional differential chaotic shift keying communication system,a MIMO-based replacement indexed differential chaotic shift keying communication scheme is proposed.The scheme adopts MIMO technique and designs a space-time packet coding scheme to improve the system BER performance.The sub-stitution indexing method is utilized to enhance the transmission rate of the system through substitution matrix transformation.The bit er-ror rate formula under additive Gaussian white noise channel is derived.Simulation results show that the proposed scheme,compared with the PI-DCSK system,possesses higher data rate and better BER performance.