Spectrum Sensing Optimization Based on Multiple Antennas for Cognitive Radio Networks

Abstract:

To protect the primary user and improve the credibility of spectrum sensing, a spectrum sensing optimization algorithm based on antenna selection is proposed in this paper. In the case where the channel coefficient and signal-to-noise ratio are not known, one antenna weighting and selection algorithm based on auto-correlation is proposed. This algorithm can also be used to distinguish whether it is necessary for antennas selection so as to optimize spectrum sensing performance. Based on auto-correlation ratio, selecting parts of the antennas to cooperatively sense spectrum can maximize the detection probability. Simulations are used to verify the method. The results indicate that the proposed antenna weighting and selection algorithm can be able to optimize network performance.

• Periodical: Applied Mechanics and Materials (Volume 443)
• Pages: 363-367
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.443.363
• Online since: October 2013
• Authors: Yang Ou, Yi Ming Wang
• Keywords: Antenna Selection, Cognitive Radio (CR), Detection Performance, Optimization, Spectrum Sensing

References

[1] Federal Communications Commission (2002) Spectrum Policy Task Force. Rep. ET Docket no. 02-135.

[2] J. Mitola et al (1999) Cognitive radio: Making software radios more personal. IEEE Pers. Commun., vol. 6, no. 4, pp. 13C18.

DOI: 10.1109/98.788210

[3] A. Ghasemi, E. S. Sousa (2008) pectrum sensing in cognitive radio networks: Requirements, challenges and design trade-offs. IEEE Commun. Mag., vol. 46, p.32–39.

DOI: 10.1109/mcom.2008.4481338

[4] A. Taherpour, M. Nasiri-Kenari, S. Gazor (2010) Multiple antenna spectrum sensing in cognitive radios. IEEE Trans. Wireless Commun., vol. 9, no. 2, pp.814-823.

DOI: 10.1109/twc.2009.02.090385

[5] R. Zhang, T. Lim, Y. C. Liang, Y. Zeng (2010) Multi-antenna based spectrum sensing for cognitive radios: a GLRT approach. IEEE Trans. Commun., vol. 58, no. 1, pp.84-88.

DOI: 10.1109/tcomm.2010.01.080158

[6] S. Kim, J. Lee, H. Wang, D. Hong (2009) Sensing performance of energy detector with correlated multiple antennas. IEEE Signal Processing Letters, vol. 16, no. 8, pp.671-674.

DOI: 10.1109/lsp.2009.2021381

[7] Xing Chen, Wenjun Xu, Zhiqiang He, Xiaofeng Tao (2008) Spectral Correlation-Based Multi-Antenna Spectrum Sensing Technique. Wireless Communications and Networking Conference 2008. WCNC 2008. IEEE , vol., no., pp.735-740.

DOI: 10.1109/wcnc.2008.135

[8] Y. Jiang, M. Varanasi (2009) The RF-chain limited MIMO system-part I: optimum diversity-multiplexing tradeoff. IEEE Trans. Wireless Commun., vol. 8, no. 10, pp.5238-5247.

DOI: 10.1109/twc.2009.081385

[9] Z. Xu, S. Sfar, R. S. Blum (2009) Analysis of MIMO systems with receives antenna selection in spatially correlated Rayleigh fading channels. IEEE Trans. Veh. Technol, vol. 58, no. 1, pp.251-262.

DOI: 10.1109/tvt.2008.923672

[10] Stephen Wang, Yue Wang, Justin Coon, Angela Doufexi (2011).

[11] Yang Ou, Yi-ming Wang (2010) Efficient methods for Spectrum Sensing in Cognitive Radio, 2010 International Conference on Wireless Communications and Signal Processing(WCSP).

DOI: 10.1109/wcsp.2010.5630652