ENERGY EFFICIENT DESIGN IN COGNITIVE RADIO NETWORKS WITH DELAY BOUNDS

Energy Efficiency is one of the crucial parameters in the design of modern wireless and other futuristic communication systems. Cognitive Radio is a highly evolving physical layer technology which is known for its environment-aware operations, self-configurability and learning. Energy Efficient design is inevitably a matter of addressing various trade-offs. In this paper, we formulate an optimization frame work for maximizing the energy efficiency by jointly optimizing the sensing duration and transmission duration. Also, the delay bounds are carefully designed in such a way that they are not beyond the desired values. Numerical and simulation results indicate that the proposed methodology resulted in higher energy efficiency compared to many existing methods. Apart from boosting up the achievable energy efficiency, this work was successful in bringing the delay bounds with in the desired range.