Work place: Faculty of Electrical Engineering, GCT, Coimbatore, India

E-mail: sivakumar.poruran@gmail.com


Research Interests: Image Compression, Image Manipulation, Network Security, Image Processing


Dr. M. RAJARAM is Professor in Faculty of Electrical Engineering, GCT, Coimbatore, India. Previously he worked as Professor and Head in department of EEE, GCE, Tirunelveli. He has more than twenty five years of teaching and research experience. His research focuses on network security, Image and Video Processing, FPGA Architectures and Power Electronics.

Author Articles
LMI Fuzzy Observer Design for Cryptography in Wireless Mobile Communications

By P.Sivakumar N.Chitra M.RAJARAM

DOI: https://doi.org/10.5815/ijisa.2013.08.08, Pub. Date: 8 Jul. 2013

Recently the engineering community began to seek the possibly application of chaos. The fact that the cryptographic community had used discrete pseudo-chaotic systems for a long time to generate cipher keys that leads to the initiation of applying chaos to secure communications. This paper presents a schematic design methodology for a fuzzy observer based secure communication of hyper chaotic systems in cryptographic applications. The transmitter and receiver, which are based on a 3D hyper chaotic oscillator, are synchronized by exploiting the concept on the observer from the control theory. The scalar transmitted signal is designed so that the hyper chaotic carrier masks the encrypted signal, which in turn hides the message signal. To encrypt the message signal, an n-shirt cipher with multiple key algorithms is proposed. In receiver side, the fuzzy observer of chaotic system is designed based on the general Takagi-Sugeno fuzzy model. This approach leads to the design of communication systems with higher security.

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