Journal of Communications and Networks

  • 제14권4호
  • /
  • Pages.364-373
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  • 2012
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  • 1229-2370(pISSN)
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  • 1976-5541(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

Combined Relay Selection and Cooperative Beamforming for Physical Layer Security

  • Kim, Jun-Su (Department of Electronics Engineering, Korea Polytechnic University) ;
  • Ikhlef, Aissa (Department of Electrical and Computer Engineering, University of British Columbia) ;
  • Schober, Robert (Department of Electrical and Computer Engineering, University of British Columbia)
  • 투고 : 2012.01.29
  • 발행 : 2012.08.31
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초록

In this paper, we propose combined relay selection and cooperative beamforming schemes for physical layer security. Generally, high operational complexity is required for cooperative beamforming withmultiple relays because of the required information exchange and synchronization among the relays. On the other hand, while it is desirable to reduce the number of relays participating in cooperative beamforming because of the associated complexity problem, doing so may degrade the coding gain of cooperative beamforming. Hence, we propose combined relay selection and cooperative beamforming schemes, where only two of the available relays are selected for beamforming and data transmission. The proposed schemes introduce a selection gain which partially compensates for the decrease in coding gain due to limiting the number of participating relays to two. Both the cases where full and only partial channel state information are available for relay selection and cooperative beamforming are considered. Analytical and simulation results for the proposed schemes show improved secrecy capacities compared to existing physical layer security schemes employing cooperative relays.

키워드

참고문헌

  1. M. Bloch, J. Barros, M. R. D. Rodrigues, and S.W.McLaughlin, "Wireless information-theoretic security," IEEE Trans. Inf. Theory, vol. 54, no. 6, pp. 2515-2534, June 2008.
  2. C. Shannon, "Communication theory of secrecy systems," Bell Syst. Technical J., vol. 28, no. 4, pp. 656-715, 1949. https://doi.org/10.1002/j.1538-7305.1949.tb00928.x
  3. A. Wyner, "Wire-tap channel," Bell Syst. Technical J., vol. 54, no. 8, pp. 1355-1387, 1975. https://doi.org/10.1002/j.1538-7305.1975.tb02040.x
  4. L. Lai and H. E. Gamal, "The relay-eavesdropper channel: Cooperation for secrecy," IEEE Trans. Inf. Theory, vol. 54, no. 9, pp. 4005-4019, Sept. 2008
  5. L. Dong, Z. Han, A. P. Petropulu, and H. V. Poor, "Improving wireless physical layer security via cooperating relays," IEEE Trans. Signal Process., vol. 58, no. 3, pp. 1875-2010, Mar. 2010.
  6. G. Zheng, L.-C. Choo, and K.-K. Wong, "Optimal cooperative jamming to enhance physical layer security using relays," IEEE Trans. Signal Process., vol. 59, no. 3, pp. 1317-1322, Mar. 2011.
  7. J. Zhang and M. Gursoy, "Relay beamforming strategies for physical-layer security," in Proc. CISS, Mar. 2010, pp. 1-6.
  8. R. Zhang, L. Song, Z. Han, B. Jiao, and M. Debbah, "Physical layer security for two way relay communications with friendly jammers," in Proc. IEEE GLOBECOM, Dec. 2010.
  9. A. Wolf and E. A. Jorswieck, "On the zero forcing optimality for friendly jamming in MISO wiretap channels," in Proc. IEEE SPAWC, June 2010, p. 1.
  10. A. Mukherjee and A. L. Swindlehurst, "Robust beamforming for security in MIMO wiretap channels with imperfect CSI," IEEE Trans. Signal Process., vol. 59, no. 1, pp. 351-361, Jan. 2011.
  11. I. Krikidis, "Opportunistic relay selection for cooperative networks with secrecy constraints," IET Commun., vol. 4, no. 15, pp. 1787-1791, Oct. 2010
  12. I. Krikidis, J. S. Thompson, and S. McLaughlin, "Relay selection for secure cooperative networks with jamming," IEEE Trans. Wireless Commun., vol. 8, no. 10, pp. 5003-5011, Oct. 2009.
  13. Multi-hop Relay System Evaluation Methodology (Channel Model and Performance Metric), IEEE Std. 802.16j-06/013r3, Feb. 2007.
  14. G. H. Golub and C. F. V. Loan, Matrix Computations. 3rd ed., Baltimore, MD: The Johns Hopkins Univ. Press, 1996.
  15. Physical layer procedures (FDD), 3rd Generation Partnership Project Std. 3GPP TS 25.214 V10.1.0, December 2010.
  16. H. David and H. Nagaraja, Order Statistics. 3rd ed., Wiley, 2003.