An Enhanced Energy Detection Algorithm in Cognitive Radio

As the rapid growth of wireless technologies, current spectrum scarcity has become a serious problem as more and more wireless applications compete for very little spectrum. On the other hand, some licensed bands allocated to applications such as TV services show little usage. Then, to improve the utilization of radio spectrum, cognitive radio technology has been proposed, so that devices can sense and use idle bands dynamically by autonomous detection. This paper mainly introduce an enhanced energy detection algorithm based on some usual methods for detecting signals embedded in noise, and then give the simulation results.