Novel MIMO-DCSK Secure Communication Systems

Multi-input and multi-output(MIMO) technology can decrease channel noise and multipath fading without any increase of system bandwidth and transmitting power. The modified differential chaos shift keying(DCSK) has better performances of security and channel utilization. Combined with the advantages of both technologies, a novel MIMO-DCSK secure communication system is designed. The proposed new system is analyzed in detail, and the emphasis is focused on the bit error rate(BER) performance under white Gaussian noise channel. The theoretical analysis and simulation results are well consistent and show that the overall performance of the novel MIMO-DCSK secure communication system is greatly superior to that of conventional DCSK communication system. The prospects of the new system in real application are studied also.