Performance analysis of hyperchaotic FM-DCSK secure communication system

To accommodate the daily increasing requirements of secure performance of communications,this paper applies hyperchaos into FM-DCSK system which can deal with more complicated dynamic behaviors.The performance is characterized by the relationship between bit error rate(BER) and SNR through theoretical analysis and Matlab numerical simulation under the conditions of AWGN channel,multi-path Rayleigh channel and multi-path Ricean channel.The results show that the hyperchaotic FM-DCSK communication system has better secure performance and anti-interference ability than lower dimensional chaotic FM-DCSK system.