The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
권호 표지

Comparative study of OFDMA cooperative relaying methods in Rayleigh fading channel

레일레이 퍼이딩 채널에서 OFDMA 협동 릴레이 방식에 따른 성능비교

  • 김남수 (청주대학교 정보통신공학과)
  • Received : 2009.05.21
  • Published : 2009.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, the relay communication is focused for the power saving and coverage extension of ad-hoc networks. For the high date rate transmission, it is proposed to adapt OFDMA relays. In this paper, we assume the 2 hop cooperative OFDMA relays between the source and the destination. The performance of 3 different relaying methods are derived and compared. We noticed that the selective OFDMA relaying method has the best performance followed by opportunistic OFDMA relaying and repetition-based OFDMA relaying method under the same threshold mutual information rate.

최근 애드 혹 네트워크에서는 전력절약 및 통달거리 확장을 위해서 릴레이 통신이 주목을 받고 있다. 또한 고속의 데이터를 전송하기 위하여 OFDMA를 릴레이에 적용하는 방식이 제안되고 있다. 본 논문에서는 소스와 목적지 사이에 여러개의 OFDMA 릴레이를 사용하는 2홉(Hop) 협동 릴레이 모델을 가정하고, 세 가지 릴레이 방식에 따른 시스템의 성능을 유도하고 비교하였다. 목적지에서 동일한 상호정보 임계치를 가정할 때, 선택 릴레이 방식, 기회전송 릴레이 방식, 그리고 반복 릴레이 방식 순으로 성능이 우수하였다.

Keywords

References

  1. Michel Barbeau, Evangelos Kranakis, Principles of ADHOC networking, John Wiley & Sons, 2007.
  2. Clint Smith, John Meyer, 3G wireless with WiMax and Wi-Fi, McGraw-Hill, 2005.
  3. A. Goldsmith, S. Jafar, N.Jindal,S.Vishwanath, "Capacity limit of MIMO channels," IEEE Journal on Selected Areas in Communications, vol. 21, no. 5, pp. 684-702, June 2003. https://doi.org/10.1109/JSAC.2003.810294
  4. Nam-Soo Kim, Beongku An, Do-Hyun Kirn, "A Strategy for supporting power saving services for mobile ad-hoc networks," Proceedings of Healthcom05, pp. 282-285, June 2005.
  5. Bo Gui, Lin Dai, and L. J. Cimini, "Selective relaying in cooperative OFDM systems: Two-hop random network," Proceedings of WCNC2008, pp.996-1001, Mar. 2008.
  6. M. O. Hasna, and M-S Alouini, "End-to-end performance of transmission systems with relays over Rayleigh-fading channels," IEEE Transactions on Wireless Communications, vol.2, no.6, pp.1126-1131, Nov. 2003. https://doi.org/10.1109/TWC.2003.819030
  7. M. Hasna, M-S Alouini, "Harmonic mean and end-to-end performance of transmission systems with relays," IEEE Trans. on Communications, vol. 52, no. 1, pp.130-135, Jan. 2004. https://doi.org/10.1109/TCOMM.2003.822185
  8. Jeremiah Hu, Norman C. Beaulieu, "Performance analysis of decode-and-forward relaying with selection combining," IEEE Communications Letters, vol.11, no.6, pp.489-491, June 2007. https://doi.org/10.1109/LCOMM.2007.070065
  9. H. Suraweera, P.Smith, N.Surobhi, "Exact outage of cooperative diversity with opportunistic spectrum access," Proceedings of ICC2008, pp. 79-84, May 2008.
  10. N. C. Beaulieu, J. Hu, "A closed-form expression for the outage probability of decode-and-forward relaying in dissimilar Rayleigh fading channels," IEEE Communications Letters, vol.10, no.12, pp.813-815, Dec. 2006. https://doi.org/10.1109/LCOMM.2006.061048
  11. Aggelos Bletsas, H. Shin, M. Win, "Cooperative communications with outage-optimal opportunistic relaying," IEEE Trans. on Wireless Communications, vol.6, no.9, pp.3450-3460, Sep. 2007. https://doi.org/10.1109/TWC.2007.06020050