Artificial Noise-like Covert Communication with Low Power Consumption and Low Complexity

The broadcast characteristics of communication between wireless devices make the communication easy to be eavesdropped. This paper studies the covert communication transmission in the field of artificial noise. Based on the perfect sequence, a parameterized unitary matrix is generated and the modulation symbols are transformed. The symbols with obvious constellation mapping relationship are mapped to Gaussian noise. This method applies the full power to the transmitted symbol, while traditional artificial noise methods need to allocate part of the power to the manufactured noise. The proposed method has better performance in power consumption, Peak to Average Power Ratio (PAPR) performance and computational complexity.