Signal transmission through a chain of Chua's circuits

In this paper, the possibility of signal transmission through a chain of Chua's circuits, each one operating in a chaotic-regime, is investigated. The propagation of an analog signal through a nearly synchronized chain is studied. As we increase the linear coupling resistance between cells, the chaotic noise is found to increase and propagate through the cells. This phenomenon is exploited in a new method for transmitting digital signals with a noise reduction circuit. We also present results on signal transmission delay. One of the most interesting results reported is our demonstration that it is possible under certain conditions to recover a binary signal even if no synchronization exists between cells.