Cognitive radio technology: Principles and practice

This position paper first briefly reviews the basic concepts about cognitive radio (CR) technology, and then discusses the differentiating features of CR and the fundamental theories or principles behind CR, especially from the artificial intelligence and machine learning perspective. A survey on the state-of-the-art development on CR testbeds around the world is presented, which indicates the trend of future development. A lot of emerging research topics in various areas are also discussed, which could be further investigated in an innovative CR approach.