Abstract:

As to the hidden terminal problem which means wrong result because of occlusion, we develop a cooperative spectrum detection system based on the proposed data screening technology. According to the relationship between the distance and the energy, we screen the detection information of effective cognitive users from all cognitive users to compose the best information collection. We judge the best information collection and get the results by combining the weight. The experimental results show that the detection performance of the proposed method is better than the ones of the traditional optimal weights merging algorithm and the perception algorithm based on signal to noise ratio comparison.

Key words: cooperative spectrum detection system, hidden terminal, data screening