Iterativelly decoding chaos encoded binary signals

In the present article we propose a new soft-input soft-output (SISO) decoding module for a chaos-channel encoded binary signal. When the chaos based channel encoder is used as inner encoder and a convolutional encoder is used as outer encoder in a serial concatenation scheme, the signal can be thus iterativelly and jointly decoded by means of the corresponding SISO decoders. This allows the transfer of bit extrinsic information for a final Maximum a Posteriori (MAP) decoding of the bit information. We believe that the design of this new chaos based SISO decoding module opens a road for new developments to make chaos based communications more robust and efficient.