DOI QR코드

DOI QR Code

An Algorithm to Reduce the Number of Nodes in Active Spectrum Sensing Via Cooperative Sequential Detection

  • 투고 : 2011.11.24
  • 심사 : 2012.02.27
  • 발행 : 2012.06.30

초록

In this paper, we propose an algorithm to conserve resources of the common control channel in a cognitive radio network by rejecting the redundant users using cooperative spectrum sensing. The proposed scheme is investigated under the paradigm of active spectrum sensing and a sequential detection technique. The algorithm is based on the J-divergence between the hypotheses of non primary user operation and the otherwise case. We select the most significant eigenvalues, which primarily affect the global statistical test. For the case where interference is from a secondary system transmission, a match filter is first employed to remove the degradation, and then the proposed algorithm is employed to remove the cooperative sensing nodes. Numerical results are provided and compared with conventional cases in order to validate the performance of the proposed algorithm.

키워드

참고문헌

  1. A. Ghasemi, E. S. Sousa, "Spectrum sensing in cognitive radio networks: requirements, challenges and design trade-offs," Communications Magazine, IEEE, vol. 46, no. 4, pp. 32-39, 2008. https://doi.org/10.1109/MCOM.2008.4623702
  2. FCC, "Notice of proposed rulemaking, in the matter of unlicensed operation in the TV broadcast bands (ET Docket no. 04-186) and additional spectrum for unlicensed devices below 900s MHz and in the 3 GHz band (ET Docket no. 02-380)," FCC 04-113, May 2004.
  3. M. Matsui, H. Shiba, K. Akabane, and K. Uehara, "A novel cooperative sensing technique for cognitive radio," in Proc. 18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC'07), pp. 1-5, Sep. 2007.
  4. J. Unnikrishnan, V. V. Veeravalli, "Cooperative sensing for primary detection in cognitive radio," IEEE J. Sel. Topics Signal Process, vol. 2, no. 1, pp. 18- 27, Feb. 2008. https://doi.org/10.1109/JSTSP.2007.914880
  5. Z. Quan, S. Cui, and A. H. Sayed, "Optimal linear cooperation for spectrum sensing in cognitive radio networks," IEEE J. Sel. Topics Signal Process, vol. 2, no. 1, pp. 28-40, Feb. 2008. https://doi.org/10.1109/JSTSP.2007.914882
  6. S. Yeelin, Y. T. Su, "A sequential test based cooperative spectrum sensing scheme for cognitive radios", Personal, Indoor and Mobile Radio Communications (PIMRC) 2008. IEEE 19th International Symposium on, pp. 1-5, 2008.
  7. R. Yu, C. Wei, and C. Zhigang, "A sequential sensing data transmission and fusion approach for large scale cognitive radios", Communications (ICC), 2010 IEEE International Conference on, pp. 1-5, May 2010.
  8. Q. Zou, S. Zheng, and A. Sayed, "Cooperative sensing via sequential detection," Signal Processing, IEEE Transactions on, vol. 58, issue 12, pp. 6266- 6283, 2010. https://doi.org/10.1109/TSP.2010.2070501
  9. S. H. Song, K. Hamdi, and K. B. Letaief, "Spectrum sensing with active cognitive systems," Wireless Communications, IEEE Transactions on, vol. 9, no. 6, pp. 1849-1854, Jun. 2010. https://doi.org/10.1109/TWC.2010.06.090924
  10. L. L. Scharf, Statistical Signal Processing: Detection, Estimation and Time Series Analysis, Addison-Wesley Publishing Company, Inc., 1991.