Spectrum Detection for Cognitive Radio Based on Auto-Adaptive Threshold

Abstract:

This paper proposed a cooperative spectrum sensing scheme based on auto-adaptive threshold in multi-user cognitive radio network, which can improve detection performance of cognitive user. According to closed-form expressions of detection probability, we compared the noncooperative scheme with the multi-user cooperative scheme, and compared the auto-adaptive threshold with fixed threshold in terms of detection probability through imitation. Result shown that the detection probability of multi-user cooperative detection is improved greatly compared to traditional noncooperative detection, and auto-adaptive scheme is advantage more than fixed threshold detection.

• Periodical: Advanced Materials Research (Volume 187)
• Pages: 614-620
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.187.614
• Online since: February 2011
• Authors: Li Na Chen, Chun Yu Miao
• Keywords: Cognitive Radio (CR), Cooperative Spectrum Sensing, Detection Probability

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