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On the performance of secondary users in a cognitive radio network

Osama Salama (UGent) , Koen De Turck (UGent) , Herwig Bruneel (UGent) , Chris Blondia and Sabine Wittevrongel (UGent)
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Abstract
Cognitive radio networks employ opportunistic scheduling of secondary (unlicensed) users for the efficient use of the scarce radio spectrum resources. The main idea is that secondary users (SUs) transmit data opportunistically by utilizing idle licensed frequency bands. The transmission of a SU may get interrupted several times due to the arrival of primary (licensed) users; the SU then needs to sense the spectrum to determine another available channel for retransmission. In this paper, we investigate the performance of SUs in a cognitive radio network. To this end, we develop a three-dimensional continuous-time Markov chain (CTMC) model of the system. We present an efficient method to compute steady-state probabilities by exploiting the specific Quasi-Birth-Death structure of the CTMC. Based on this, several SU performance measures are evaluated such as the mean delay of a SU, the SU interruption probability, the probability of a SU getting discarded from the system after an interruption and the SU blocking probability upon arrival. Numerical examples illustrate the influence of system parameters such as the sensing rate on the SU performance.
Keywords
SPECTRUM ACCESS, Cognitive radio, HANDOFF, Opportunistic scheduling, Markov chain, Performance evaluation

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MLA
Salama, Osama et al. “On the Performance of Secondary Users in a Cognitive Radio Network.” Lecture Notes in Computer Science. Ed. B Sericola, M Telek, & G Horvath. Vol. 8499. Berlin, Germany: SPRINGER-VERLAG BERLIN, 2014. 208–222. Print.
APA
Salama, O., De Turck, K., Bruneel, H., Blondia, C., & Wittevrongel, S. (2014). On the performance of secondary users in a cognitive radio network. In B. Sericola, M. Telek, & G. Horvath (Eds.), LECTURE NOTES IN COMPUTER SCIENCE (Vol. 8499, pp. 208–222). Presented at the 21st International Conference on Analytical and Stochastic Modelling Techniques and Applications (ASMTA), Berlin, Germany: SPRINGER-VERLAG BERLIN.
Chicago author-date
Salama, Osama, Koen De Turck, Herwig Bruneel, Chris Blondia, and Sabine Wittevrongel. 2014. “On the Performance of Secondary Users in a Cognitive Radio Network.” In Lecture Notes in Computer Science, ed. B Sericola, M Telek, and G Horvath, 8499:208–222. Berlin, Germany: SPRINGER-VERLAG BERLIN.
Chicago author-date (all authors)
Salama, Osama, Koen De Turck, Herwig Bruneel, Chris Blondia, and Sabine Wittevrongel. 2014. “On the Performance of Secondary Users in a Cognitive Radio Network.” In Lecture Notes in Computer Science, ed. B Sericola, M Telek, and G Horvath, 8499:208–222. Berlin, Germany: SPRINGER-VERLAG BERLIN.
Vancouver
1.
Salama O, De Turck K, Bruneel H, Blondia C, Wittevrongel S. On the performance of secondary users in a cognitive radio network. In: Sericola B, Telek M, Horvath G, editors. LECTURE NOTES IN COMPUTER SCIENCE. Berlin, Germany: SPRINGER-VERLAG BERLIN; 2014. p. 208–22.
IEEE
[1]
O. Salama, K. De Turck, H. Bruneel, C. Blondia, and S. Wittevrongel, “On the performance of secondary users in a cognitive radio network,” in LECTURE NOTES IN COMPUTER SCIENCE, Budapest, Hungary, 2014, vol. 8499, pp. 208–222.
@inproceedings{6871610,
  abstract     = {Cognitive radio networks employ opportunistic scheduling of secondary (unlicensed) users for the efficient use of the scarce radio spectrum resources. The main idea is that secondary users (SUs) transmit data opportunistically by utilizing idle licensed frequency bands. The transmission of a SU may get interrupted several times due to the arrival of primary (licensed) users; the SU then needs to sense the spectrum to determine another available channel for retransmission. In this paper, we investigate the performance of SUs in a cognitive radio network. To this end, we develop a three-dimensional continuous-time Markov chain (CTMC) model of the system. We present an efficient method to compute steady-state probabilities by exploiting the specific Quasi-Birth-Death structure of the CTMC. Based on this, several SU performance measures are evaluated such as the mean delay of a SU, the SU interruption probability, the probability of a SU getting discarded from the system after an interruption and the SU blocking probability upon arrival. Numerical examples illustrate the influence of system parameters such as the sensing rate on the SU performance.},
  author       = {Salama, Osama and De Turck, Koen and Bruneel, Herwig and Blondia, Chris and Wittevrongel, Sabine},
  booktitle    = {LECTURE NOTES IN COMPUTER SCIENCE},
  editor       = {Sericola, B and Telek, M and Horvath, G},
  isbn         = {9783319082189},
  issn         = {0302-9743},
  keywords     = {SPECTRUM ACCESS,Cognitive radio,HANDOFF,Opportunistic scheduling,Markov chain,Performance evaluation},
  language     = {eng},
  location     = {Budapest, Hungary},
  pages        = {208--222},
  publisher    = {SPRINGER-VERLAG BERLIN},
  title        = {On the performance of secondary users in a cognitive radio network},
  volume       = {8499},
  year         = {2014},
}

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