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In this article, we investigate the strategies of access and handoff in the opportunistic spectrum access (OSA) based cognitive cellular networks (CCNs). Then, a three dimension (3D) continuous- time Markov chain (CTMC) is constructed to derive the grade of service (GoS) performance metrics in the OSA-based CCNs. Through the 3D CTMC, both the non-hopping and hopping modes are investigated, respectively...
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