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Performance Analysis of Opportunistc Spectrum Access on Cognitive Radio

Xie, Qing Yan
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1273173530

Abstract Details

2010, MS, University of Cincinnati, Engineering : Computer Science.
Nowadays, the critical shortage of spectrum resource and underutilization of licensed spectrum urge people to discover new approaches to efficiently utilize spectrum. Opportunistic spectrum access (OSA) has been considered to be a good approach to exploit spectral resources and improve licensed spectral utilization. We derive an idea from this approach and design a system of primary network overlaid with secondary network, where we use the centralized network protocol in primary network and ad hoc medium access control (MAC) protocol (IEEE 802.11 Distributed Coordination Function) in secondary network. The users in secondary network occupy the idle spectrum left by users in primary network in a non-intrusive manner. The secondary users’ activities do not interfere with those of primary users. We investigate the throughput of our system and evaluate the performance by different metrics in our simulation. The obtained results show that channel utilization rate can be improved by about 50% compared with traditional sharing spectrum model in single network. We also observe that there is tradeoff between the blocked rate of primary network and network quality. We can control this tradeoff and meet the requirement of networks and users by threshold value.
George Purdy, PhD (Committee Chair)
Anca Ralescu, PhD (Committee Member)
Qing An Zeng, PhD (Committee Member)
78 p.
Computer Science
opportunistic spectrum access; Cognitive radio; ad hoc network; centralized network

Recommended Citations

Citations

  • Xie, Q. Y. (2010). Performance Analysis of Opportunistc Spectrum Access on Cognitive Radio [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1273173530

    APA Style (7th edition)

  • Xie, Qing Yan. Performance Analysis of Opportunistc Spectrum Access on Cognitive Radio. 2010. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1273173530.

    MLA Style (8th edition)

  • Xie, Qing Yan. "Performance Analysis of Opportunistc Spectrum Access on Cognitive Radio." Master's thesis, University of Cincinnati, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1273173530

    Chicago Manual of Style (17th edition)

ucin1273173530
361
© 2009, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.