Spectrum sensing and spectrum allocation algorithms in wireless monitoring video transmission

Abstract

Video monitoring system is an important measure to guarantee people’s safety. Wireless video monitoring system has been widely used with advantages of simpler construction and higher flexibility compared with traditional wired video monitoring system. Cognitive radio network is introduced into the wireless video monitoring system in this paper to improve the spectrum utilization. Cognitive radios have enabled users to utilize licensed bands opportunistically without harmful interference to licensed users. The basic concept of wireless video monitoring system is recalled in this paper first. Then we analyze the system model of the cognitive radio network based video monitoring system. We provide a centralized cooperation spectrum sensing algorithm and a priority and channel ranking based spectrum allocation algorithm. Simulation results show that our algorithms have better performance than algorithms without the consideration of priority or channel ranking.