Grade of service of opportunistic spectrum access based cognitive cellular networks | IEEE Journals & Magazine | IEEE Xplore
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Grade of service of opportunistic spectrum access based cognitive cellular networks


Abstract:

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 di...Show More

Abstract:

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. Specifically, for a given primary user (PU) traffic, the range of achievable user equipment (UE) traffic is derived with guarantying the GoS of the UE. Moreover, we study the effective spectrum utilization and influence of imperfect spectrum sensing to the GoS performance, respectively. Furthermore, to verify the validity of the theoretical analysis, simulations are conducted. Finally, some open issues are discussed in this article.
Published in: IEEE Wireless Communications ( Volume: 20, Issue: 5, October 2013)
Page(s): 126 - 133
Date of Publication: 14 November 2013

ISSN Information:


References

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