A Chaotic Pseudo Orthogonal Covert Communication System

A Chaotic Pseudo Orthogonal Covert (CPOC) communication system is proposed. The Chaotic Pseudo Orthogonal (CPO) signals is proposed to improve the Low Probability of Detection (LPD) performance in the covert communication system. The LPD performance of CPOC system is verified by the cepstrum and Spectral Correlation Function (SCF). The Bit Error Ratio (BER) performance of the proposed CPOC system is compared to the conventional Differential Chaos Shift Keying (DCSK) communication system in Additive Gaussian White Noise (AWGN) and multipath channels. The experiment test has been carried out based on a Software Defined Electronical (SDE) platform to show the feasibility of the covert communication system based on CPOC.