Adaptive energy detection for cognitive radio: An experimental study

摘要: A cognitive radio (CR) is able to sense spectral environment over a wide range of frequencies, and provide opportunistic access frequency bands temporarily unoccupied by an incumbent. Accurate channel sensing the first important task for CR, energy detector often used this purpose. While normal works well with chosen window size based on prior knowledge about possible primary users, it fails signals that are narrow compared window, or if only fraction signal inside window. We propose adaptive can adjust its detection evaluate such detector's performance using experimental results obtained through real time implementation.