Adaptive Double Threshold with Multiple Energy Detection Technique in Cognitive Radio

J. Avila ； K. Thenmozhi

《Research Journal of Applied Sciences, Engineering and Technology》 10卷11期 (2015/08) Pp. 1336-1342

並列摘要

The Cognitive Radio (CR) network is a system which lends help at the time of scarcity in spectrum. One of the process by which CR senses the spectrum is energy detection method with a fixed single threshold. When energy levels fall below the threshold, secondary user is permitted to use the spectrum of the primary user. It is shown by simulation results that having two levels of threshold i.e., double threshold improves performance by giving importance to one of the major aspects of CR, reducing the confliction of the primary and the secondary user. For enhanced performance under noise conditions, dynamic allocation or adaptive threshold is employed with the two levels of threshold. The system is made better by the use of multiple energy detectors on the reception end.

並列關鍵字

Adaptive threshold ； cognitive radio ； double threshold ； energy detection