Chaotic signal driven parametric modulation

A parametric modulated communication system driven by a chaotic signal is presented. The chaotic signal is generated by a chaotic digital filter with a sawtooth nonlinearity. In the system, an analysis-synthesis digital filter-pair, each with a sawtooth nonlinearity, consisting of one or more parametric modulated signals, is used. An adaptive modified Kalman filter or an adaptive modified NLMS filter can be used in the receiver to decode the transmitted signals. Simulations show that the system is able to transmit multiple signals over a Gaussian channel. Further, the study has been extended to include the uses of a pole-zero filter-pair and a second-order Volterra filter-pair, and their results are given.