1Greater Kolkata College of Engineering and Management, Baruipur, 24 Parganas South, PIN – 743302, West Bengal, India.
2Department of Electronics and Communication Engineering, Narula Institute of Technology, JIS Group, Kolkata – 700 109, India.
Cognitive radio is a type of software defined radio with artificial intelligence, capability of sensing and reacting to the environment. It is a paradigm for wireless communication in which either a network or a wireless node changes its transmission or reception parameters to communicate efficiently avoiding interference with licensed or unlicensed users. In this work, a fuzzy logic based system is proposed where the cognitive radio can change its transmission power depending on distance between transmitter and receiver, node density and interference. The proposed system is found to give satisfactory results. A similar system is also proposed for dynamic spectrum sharing or trading and found to give good result.
Cognitive radio, fuzzy logic, dynamic spectrum access
