Data rate and energy decrement caused by the transmission of reference and data in equal portions constitute the major drawbacks of differential chaos shift keying (DCSK) system. To overcome this dominant drawback, a high rate noise reduction differential chaos shift keying (HRNR-DCSK) system is proposed. The system extends data signals into a plurality of slots, each slot to transmit different data bits, and the reference sequence length decreases with the increasing number of transmission bits. At the receiver, the variance of the noise of the received signal is reduced to improve the performance of biterrorrate (BER) systems. This system improves the data transfer rate as well as energy efficiency. The BER over additive white Gaussian noise (AWGN) channel and Rayleigh channel is derived and numerous simulation is made. Theoretical analysis and simulation results show that simulations in both environments show a perfect match with the analytical expressions, meanwhile, HRNR-DCSK system can effectively improve data transfer rate and has certain application prospect in the chaotic communication field.