Spectrum Sensing and Allocation of Cognitive Radio Networks

  IJPTT-book-cover
 
International Journal of P2P Network Trends and Technology (IJPTT)          
 
© 2015 by IJPTT Journal
Volume - 5 Issue - 6
Year of Publication : 2015
Authors : S.Anusha, N.Jayanthi

MLA

S.Anusha, N.Jayanthi "Spectrum Sensing and Allocation of Cognitive Radio Networks". International Journal of P2P Network Trends and Technology (IJPTT), V5(6):10-14 Nov - Dec 2015, ISSN:2249-2615, www.ijpttjournal.org. Published by Seventh Sense Research Group.

Abstract

Cognitive Radio Networks enable efficient spectrum sharing between licensed primary users (PUs) and unlicensed secondary users (SUs). Secondary users do not generate interferences to the primary users. Secondary users should have capability of knowing the real time spectrum usage of primary users. The knowledge can be acquired in many ways, one of which is spectrum sensing. In existing spectrum sensing methods, known distribution of the received primary signals are assumed. Proposed Spectrum sensing algorithm is designed under the distribution uncertainty of primary signals. Sensing algorithm is decomposed into a series of semi definite programs. Optimal decision threshold is designed at local detector of secondary user. Iterative algorithm is used to search the licensed spectrum for secondary users.

References

[1] M.Mchenry, “Spectrum white space measurements”, 2003 New America Foundation Broadband Forum.
[2] S. Haykin, “Cognitive radio: brain-empowered wireless communications,” IEEE J. Sel. Areas Commun., vol. 23, no. 2, pp. 201–220, Feb. 2005.
[3] L. Duan, L. Gao, and J. Huang, “Contract-based cooperative spectrum sharing,” in Proc. 2011 IEEE DySPAN.
[4] H.T.Cheng and W.Zhuang, “Simple channel sensing order in cognitive radio networks”, IEEE J.Sel.Areas Commun., vol.29, no.4, pp.676-688, Apr.2011.
[5] “Robust Performance of Spectrum Sensing in Cognitive Radio Networks”, Shimin Gong, Ping Wang, and Jianvei Huang, IEEE Transactions on wireless communications, vol. 12, No.5, May 2013.
[6] G. Taricco, “Optimization of linear cooperative spectrum sensing for cognitive radio networks,” IEEE J. Sel. Topics signal Process, vol. 5, no. 1, pp. 77–86, Feb. 2011.
[7] A.Rao and M.Alouini, “Performance of cooperative spectrum sensing over non-identical fading environments”, IEEE Trans, Commun., vol.59, no.12, pp.3249-3253, Dec.2011.
[8] S.Gong, P.Wang, and J.Huang, “Robust threshold design for co-operative sensing in cognitive radio networks,” in Proc.2012 IEEE.
[9] L.Gao, X.Wang, Y.Xu, and Q.Zhang, “Spectrum trading in cognitive radio networks: a contract-theoretic modeling approach”, IEEE J.Sel.Areas Commun. Vol.29, no.4, pp.843-855, Apr. 2011.
[10] W.Y.Lee and I.F.Akyildiz, “Optimal spectrum sensing framework for cognitive radio networks”, IEEE Trans. Wireless Commun., vol.7, no.10, pp.3845-3857, Oct.2008.

Keywords
Cognitive radio network, licensed spectrum, unlicensed spectrum, spectrum sensing, decision threshold.