IEICE Transactions on Communications

IEICE Transactions on Communications 2008 E91-B(1):70-76; doi:10.1093/ietcom/e91-b.1.70

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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Special Section on Cognitive Radio and Spectrum Sharing Technology -- Papers -- Spectrum Sensing

Interference Information Based Power Control for Cognitive Radio with Multi-Hop Cooperative Sensing

Youngjin YU¹, Hidekazu MURATA¹, Koji YAMAMOTO ¹ and Susumu YOSHIDA ¹

¹ The authors are with the Graduate School of Informatics, Kyoto University, Kyoto-shi, 606-8501 Japan. E-mail: contact-h19{at}hanase.kuee.kyoto-u.ac.jp

Reliable detection of other radio systems is crucial for systems that share the same frequency band. In wireless communication channels, there is uncertainty in the received signal level due to multipath fading and shadowing. Cooperative sensing techniques in which radio stations share their sensing information can improve the detection probability of other systems. In this paper, a new cooperative sensing scheme that reduces the false detection probability while maintaining the outage probability of other systems is investigated. In the proposed system, sensing information is collected using multi-hop transmission from all sensing stations that detect other systems, and transmission decisions are based on the received sensing information. The proposed system also controls the transmit power based on the received CINRs from the sensing stations. Simulation results reveal that the proposed system can reduce the outage probability of other systems, or improve its link success probability.

Key Words: cognitive radio, cooperative sensing, shadowing, interference information, multi-hop transmission

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Manuscript received May 7, 2007. Manuscript revised July 20, 2007.

Reference

[1] J. Mitora, III and G.Q. Maguire, Jr., "Cognitive radio: Making software radios more personal," IEEE Pers. Commun., vol.6, no.4, pp.13–18, Aug. 1999.

[2] S. Haykin, "Cognitive radio: Brain-empowered wireless communications," IEEE J. Sel. Areas Commun., vol.23, no.2, pp.201–220, Feb. 2005.

[3] D. Cabric, S.M. Mishra, D. Willkomm, R.W. Broderson, and A. Wolisz, "A cognitive radio approach for usage of virtual unlicensed spectrum," Proc. 14th IST Mobile Wireless Communications Summit 2005, June 2005.

[4] S.M. Mishra, A. Sahai, and R.W. Brodersen, "Cooperative sensing among cognitive radios," Proc. ICC 2006, pp.1658–1663, Istanbul, June 2006.

[5] D. Cabric, S.M. Mishra, and R.W. Brodersen, "Implementation issues in spectrum sensing for cognitive radios," Proc. Asilomar Conference on Signals, Systems, and Computers, pp.772–776, 2004.

[6] M. Matsui, H. Shiba, K. Akabane, and K. Uehara, "Study of cooperative sensing for cognitive radio," IEICE Technical Report, SR2006-67, March 2007.

[7] G. Ganesan and Y. Li, "Agility improvement through cooperative diversity in cognitive radio," Proc. IEEE Globecom, pp.2505–2509, St. Louis, Missouri, Nov.-Dec. 2005.

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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to My Personal Archive Download to citation manager Request Permissions Google Scholar Articles by YU, Y. Articles by YOSHIDA, S. Search for Related Content Social Bookmarking          What's this?