Browse > Article
http://dx.doi.org/10.3837/tiis.2015.01.002

Entropy-based Spectrum Sensing for Cognitive Radio Networks in the Presence of an Unauthorized Signal  

So, Jaewoo (Department of Electronic Engineering, Sogang University)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.9, no.1, 2015 , pp. 20-33 More about this Journal
Abstract
Spectrum sensing is a key component of cognitive radio. The prediction of the primary user status in a low signal-to-noise ratio is an important factor in spectrum sensing. However, because of noise uncertainty, secondary users have difficulty distinguishing between the primary signal and an unauthorized signal when an unauthorized user exists in a cognitive radio network. To resolve the sensitivity to the noise uncertainty problem, we propose an entropy-based spectrum sensing scheme to detect the primary signal accurately in the presence of an unauthorized signal. The proposed spectrum sensing uses the conditional entropy between the primary signal and the unauthorized signal. The ability to detect the primary signal is thus robust against noise uncertainty, which leads to superior sensing performance in a low signal-to-noise ratio. Simulation results show that the proposed spectrum sensing scheme outperforms the conventional entropy-based spectrum sensing schemes in terms of the primary user detection probability.
Keywords
Cognitive radio; spectrum sensing; conditional entropy; unauthorized signal;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Y.-C. Liang, K.-C. Chen, G. Y. Li, and P. Mahonen, "Cognitive radio networking and communications: an overview," IEEE Transactions on Vehicular Technology, vol. 60, no. 711, pp. 3386-3407, Sep. 2011.   DOI
2 X. Chen, H.-H. Chen, and W. Meng, "Cooperative communications for cognitive radio networks - from theory to applications," IEEE Communications Surveys & Tutorials, vol. 16, no. 3, pp. 1180-1192, Third quarter 2014.   DOI
3 T. Yucek and H. Arslan, "A survey of spectrum sensing algorithms for cognitive radio applications," IEEE Communications Surveys & Tutorials, vol. 11, no. 1, pp. 116-130, 2009.   DOI
4 S. Haykin, D. J. Thomson, and J. H. Reed, "Spectrum sensing for cognitive radio," in Proc. of IEEE, vol. 97, no. 5, pp. 849-877, May 2009.   DOI
5 H. Hu, Y. Xu, Z. Liu, N. Li, and H. Zhang, "Optimal strategies for cooperative spectrum sensing in multiple cross-over cognitive radio networks," KSII Transactions on Internet and Information Systems, vol. 6, no. 12, pp. 3016-3080, Dec. 2012.
6 X.-L. Huang, G. Wang, F. Hu, and S. Kumar, "The impact of spectrum sensing frequency and packet-loading scheme on multimedia transmission over cognitive radio networks," IEEE Transactions on Multimedia, vol. 13, no. 4, pp.748-761, Aug. 2011.   DOI
7 W. Lee and D.-H. Cho, "Enhanced spectrum sensing scheme in cognitive radio systems with MIMO antennae," IEEE Transactions on Vehicular Technology, vol. 60, no. 3, pp. 1072-1085, Mar. 2011.   DOI
8 N. Janatian, M. M. Hashemi, S. Sun, and Y. L. Guan, "Centralised cooperative spectrum sensing under correlated shadowing," IET Communications, vol. 18, no. 11, pp. 1996-2007, Nov. 2014.
9 S. V. Nagaraj, "Entropy-based spectrum sensing in cognitive radio," Elsevier Signal Processing, vol. 89, no. 2, pp. 174-180, 2009.   DOI
10 Y. Zhang, Q. Zhang, and S. Wu, "Entropy-based robust spectrum sensing in cognitive radio," IET Communications, vol. 4, no. 4, pp. 428-436, 2010.   DOI
11 S. Srinu and S. L. Sabat, "Cooperative wideband spectrum sensing in suspicious cognitive radio network," IET Wireless Sensor Systems, vol. 3, no. 2, pp. 153-161, Feb. 2013.   DOI
12 J. Gu, W. Liu, S. J. Jang, and J. M. Kim, "Spectrum sensing by exploiting the similarity of PDFs of two time-adjacent detected data sets with cross entropy," IEICE Transactions on Communications, vol. e94-b, no. 12, pp. 3623-3626, Dec. 2011.
13 T. M. Cover, J. A. Thomas., Elements of Information Theory, 2nd Edition, J. Wiley & S. Hoboken, New Jersey, 2006.
14 Q. Liu, J. Gao, Y. Guo, and S. Liu, "Attack-proof cooperative spectrum sensing based on consensus algorithm in cognitive radio networks," KSII Transactions on Internet and Information Systems, vol. 4, no. 6, pp. 1042-1062, Dec. 2010.   DOI
15 R. Chen, J.-M. Park, and J. H. Reed, "Defense against primary user emulation attacks in cognitive radio networks," IEEE Journal on Selected Areas in Communications, vol. 26, no. 1, pp. 25-37, Jan. 2008.   DOI
16 C. Chen, H. Cheng, and Y.-D. Yao, "Cooperative spectrum sensing in cognitive radio networks in the presence of the primary user emulation attack," IEEE Transactions on Wireless Communications, vol. 10, no. 7, pp. 2135-2141, Jul. 2011.   DOI
17 M. Haghighat and S. M. S. Sadough, "Cooperative spectrum sensing for cognitive radio networks in the presence of smart malicious users," International Journal of Electronics and Communications (AEU), vol. 68, no. 6, pp. 520-527, Jun. 2014.   DOI
18 Q. Zou, S. Zheng, and A. H. Sayed, "Cooperative sensing via sequential detection," IEEE Transactions on Signal Processing, vol. 58, no. 12, pp. 6266-6283, Dec. 2010.   DOI
19 Z. Jin, S. Anand, and K. P. Subbalakshmi, "Detecting primary user emulation attacks in dynamic spectrum access networks," in Proc. of IEEE International Conference on Communications (ICC), pp. 1-5. Jun. 2009.
20 Y. L. Zhang, Q. Y. Zhang, and T. Melodia, "A frequency-domain entropy-based detector for robust spectrum sensing in cognitive radio networks," IEEE Communications Letters, vol. 14, no. 6, pp. 533-535, Jun. 2010.   DOI