On an Improved Chaotic Shift Keying Communication Scheme

There is a great interest in secure communications within industry and various sectors of society. One common approach of achieving this is by encoding the information using shift-keying methods such as Binary Phase Shift Keying and Quadrature Phase Shift Keying. Proposed in this paper is a new robust yet simple multilevel differential chaotic shift-keying scheme. Compared with the schemes currently in use it has advantages of good noise rejection and increased data transmission rates. Under this scheme, instead of using one or two-dimensional encoding, an extendable dimensional coding method is used and its effectiveness is demonstrated by presenting simulation results for a four-dimensional system. The potential of implementing this scheme in real-time applications is under investigation. m