Publication

Abstract : Chaotic signals find their application in areas of communication, signal processing and image encryption. Digital chaotic circuits show better properties such as immunity against noise and variation tolerance, when compared to analog chaos circuits. This paper presents the implementation of a Pseudo chaos signal generator using reconfigurable linear feedback shift registers (RLFSR). One-dimensional mapping techniques such as tent mapping, ship mapping and twisted-tent mapping are employed over the pseudo-random sequence generated with LFSR for the design implementation. The system was implemented using Verilog HDL codes and analyzed using Xilinx Plan Ahead/Cadence RTL compiler and Modelsim. The chaotic signal generated exhibits properties such as delta-like auto-correlation value, optimum chaotic behavior as per cryptography standards.