Browse > Article
http://dx.doi.org/10.7840/KICS.2011.36A.11.892

Active Secondary User Selection Algorithm of Opportunistic Spatial Orthogonalization Considering Interference by a Primary User  

Yoo, Kang-Hyun (서울대학교 전기 컴퓨터공학부 전파 및 무선통신연구실)
Kim, Yong-Hwa (목포해양대학교 해양정보통신공학부)
Lee, Han-Byul (서울대학교 전기 컴퓨터공학부 전파 및 무선통신연구실)
Kim, Seong-Cheol (서울대학교 전기컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.11A, 2011 , pp. 892-902 More about this Journal
Abstract
The opportunistic spatial orthogonalization (OSO) scheme, proposed by Cong Shen and Michael P. Fitz, allows the existence of secondary users during the period in which the primary user is occupying all licensed bands. This paper introduces an active secondary user selection algorithm which mitigates the interference from the primary user transmitter to the secondary user receiver based on single-input multi-output system without altering a primary user's transmission strategy. A proposed algorithm guarantees the minimum average throughput of the primary user and overcomes the average sum throughput of a conventional OSO. We have numerically analyzed the average throughput under various constraints.
Keywords
Cognitive Radio Networks; Opportunistic Spatial Orthogonalization; Single-Input Multiple-Output;
Citations & Related Records
연도 인용수 순위
  • Reference
1 V. R. Cadambe and S. A. Jafar, "Interference alignment and the degrees of freedom for the K user interference channel," IEEE Trans. Info. Theory, Vol.54, No.8, pp.3425-3441, Aug., 2008.   DOI   ScienceOn
2 S. M. Perlaza, Fawaz, Nadia Fwaz, Samson Lasaulce and Merouane Debbah, "Frome Spectrum Pooling to Space Pooling: Opportunistic Interference Alignment in MIMO Cognitive Networks," IEEE Trans. Signal Processing, Vol.58, No.7, pp.3728-3741, July, 2010.   DOI   ScienceOn
3 K. Hamdi, W. Zhang, and K. B. Letaief, "Joint beamforming and scheduling in cognitive radio networks," in Proc. IEEE GLOBECOM, Nov., 2007, pp.2977-2981.
4 R. Zhang and Y.-C. Liang, Exploiting new forms of multiuser diversity for spectrum sharing in cognitive radio networks Sep. 2008 [Online]. Available: http://arxiv.org/abs/0809.2147
5 T. W. Ban, W. Choi, B. C. Jung, and D. K. Sung, "Multi-user diversity in a spectrum sharing system," IEEE Trans. Wireless Communication., Vol.8, No.1, pp.102-106, Jan., 2009.   DOI   ScienceOn
6 Cong Shen and Michael P. Fitz, "Opportunistic Spatial Orthogonalization and Its Application in Fading Cognitive Radio Networks," IEEE J. Selected Topics in Signal Processing, Vol.5, No.1, pp.182-189, Feb., 2011.   DOI   ScienceOn
7 Mohammad G. Khoshkholgh, Keivan Navaie and Halim Yanikomeroglu, "Access Strategies for Spectrum Sharing in Fading Environment: Overlay, Underlay, and Miexd," IEEE Trans. Mobile Computing, Vol.9, No.12, pp.1780-1793, Dec., 2010.   DOI   ScienceOn
8 O. Simeone and U. Spagnolini, "Channel estimation for block-fading frequency-selective Rayleigh MIMO channels: performance limmits," in Proceedings in Vehicular Technology Conference 2004-spring, Vol.2, pp.856-860, 2004.
9 John G. Proakis, Digital Communications 4thed., McGraw-Hill, 2001.
10 Federal Communications Commision, "Spectrum policy task force report, FCC 02-155," Nov., 2002.
11 S. Haykin, "Cognitive radio: brain-empowered wireless communications," IEEE. J. on Selected Areas in Communications, Vol.23, No.2, pp.201- 220, Feb. 2005.   DOI   ScienceOn