Multilayer WFRFT and chaotic encryption wireless communication system based on MIMO

Abstract

Abstract In order to improve the concealment and anti interception performance of satellite and other wireless communication.Based on the characteristics of multilayer weighted fractional-order Fourier transform and chaotic mapping, a multilayer weighted fractional-order Fourier transform and chaotic mapping wireless communication system is designed. The number of modulation layers of multilayer WFRFT is consistent with the number of transmitting antennas, and different modulation orders are adopted in each layer, which makes it more difficult to crack the information by chaotic mapping scrambling codes on the modulated signals. The simulation results show that the designed system has better concealment performance by comparing the bit error rate of the receiver with that of the eavesdropper. The bit error rate of the eavesdropper is about 0.5 when the eavesdropper does not know the specific parameters.