Modified CSK-system using a discriminant procedure for recovering information encoded in variations of driving parameter of the nonlinear map is proposed. Discriminant procedure based on Fisher criterion and implies measurements of statistical characteristics of a difference between received and reference sequences. Such procedure is shown to be able to retrieve binary information even under conditions of 30% inconsistence (comparing to 0.5% typical for systems with synchronization) between driving parameters of transmitting and reference maps. Tracking receiver which combines CSK-system with discrimination procedure and control feedback is also proposed. This receiver allows to reduce signal/noise ratio required for reliable receiving of binary information. Such system is able to reconstruct also smooth variation of driving parameters.
展开▼
