Performance of Detection Probability with Adaptive Threshold Algorithm for CR Based on Ad-Hoc Network
인지 무선 기반 애드 혹 네트워크에서 적응적 임계치 알고리즘을 이용한 센싱 성능

Kyung-Sun Lee, Yoon-Hyun Kim, Jin-Young Kim
2012 The Journal of Korean Institute of Electromagnetic Engineering and Science  
Ad-hoc networks can be used various environment, which it is difficult to construct infrastructures, such as shadowing areas, disaster areas, war area, and so on. In order to support to considerable and various wireless services, more spectrum resources are needed. However, efficient utilization of the frequency resource is difficult because of spectrum scarcity and the conventional frequency regulation. Ad-hoc networks employing cognitive radio(CR) system that guarantee high spectrum
more » ... n provide effective way to increase the network capacity. In conventional CR based ad-hoc network, it uses constant threshold value to detect primary user signal, so the results become not reliable. In this paper, to solve this problem, we apply adaptive threshold value to the CR based ad-hoc network, and adaptive threshold is immediately changed by SNR(Signal to Noise Ratio). From the simulation results, we confirmed that proposed algorithm has the greatly better detection probabilities than conventional CR based ad-hoc network.
doi:10.5515/kjkiees.2012.23.5.632 fatcat:lmcjindxgjhjnowdjjgzabtadq