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Performance Analysis of Cognitive Radio Spectrum Access with Different Primary User Access Schemes

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Abstract

The cognitive access process based on different access schemes of the primary user in the spectrum sharing system of cognitive radio is studied. In the cognitive system with finite user population, the primary users access the licensed channels through random access, real-reservation access, pseudo-reservation access and non-random access. The cognitive users access the licensed channels without interfering the primary users. Their access process is modeled using the three-dimensional continuous Markov model. The performance analysis is presented with variation of the number of cognitive users. It is known from the simulated results that the handoff probability, the blocking probability and the forced termination probability of the cognitive users increase with the increase of the number of cognitive users. It is also found that the random access scheme has the highest handoff probability. And the real-reservation access scheme has the highest blocking probability and forced termination probability. In addition, the non-random access scheme has the maximum channel utilization.

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Acknowledgments

This article was supported by Fundamental Research Funds for Central Universities (CDJXS11162236) and National Natural Science Foundation of China (No. 60872038).

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Authors and Affiliations

  1. College of Communication Engineering, Chongqing University, Chongqing, 400044, China

    Weng-jiang Feng, Rong Jiang, Peipei Han, Wanli Liao & Haochen He

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  1. Weng-jiang Feng
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Correspondence to Rong Jiang.

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Feng, Wj., Jiang, R., Han, P. et al. Performance Analysis of Cognitive Radio Spectrum Access with Different Primary User Access Schemes. Wireless Pers Commun 75, 309–324 (2014). https://doi.org/10.1007/s11277-013-1364-9

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  • DOI: https://doi.org/10.1007/s11277-013-1364-9

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