초록

선택결합을 갖는 협동 다이버시티 시스템의 성능을 만족시키는 연결노드의 전력제어 범위를 검토하였다. 그리고 전력제한이 있는 연결노드가 시스템의 성능에 미치는 영향을 분석하였다. 레일레이 페이딩 하에서 각 경로의 평균 신호 대 잡음비가 동일할 경우, 연결노드가 하나이며 선택결합을 갖는 협동 다이버시티의 이득은 수신오율 $1{\times}10^{-3}$에서 13.5 dB 이다. 그리고 전력제한이 있는 연결노드는 시스템의 성능에 많은 영향이 있음을 알 수 있었다. 그러므로 ad-hoc 네트워크에서 전력제한이 있는 노드는 협동 다이버시티의 연결노드로 바람직하지 않다.

Abstract

Based on the performance of a cooperative diversity with selection combining in Rayleigh fading, the power control range of a relay node is investigated. Also the effect of the power-limited relay node to the system performance is investigated. If the average signal-to-noise ratio(SNR) of each signal path is equal, the single relay cooperative diversity is obtained 13.5dB gain at the outage probability of $1{\times}10^{-3}$ in Rayleigh fading. We noticed that the limited power of a relay node severely degrades the system performance. Therefore the node with limited power in ad-hoc network is not recommended as a relay node in cooperative diversity system.

주제어

#Cooperative diversity   #Relay Network   #Selection combining  

참고문헌 (13)

1. V. Emamian, P. Anghel, M. Mostafa Kaveh, 'Multi-user spatial diversity in a shadow-fading environment,' Proceedings of VTC2002-Fall, pp. 573-576, 2002 
2. P. A. Anghel, M. Kaveh, 'Exact symbol error probability of a cooperative network in Rayleighfading environment,' IEEE Trans. on Wireless Communi., Vol. 1, No.5, pp. 1416-1421, Sept. 2004 
3. G. L. Stuber, Principles of mobile communication, Kluwer Academic Publishers, 2001 
4. M. Yacuob, Foundation of mobile radio engineering, CRC Press 1993 
5. N. Ahmed, M. A. Khojastepour, and B. Aazhang, 'Outage minimization and optimal power control for the fading relay channel,' Proceedings of information theory workshop, pp. 458-462, Oct. 2004 
6. A. Goldsmith, Wireless communications, Cambridge University Press, 2005 
7. Nam-Soo Kim, Beongku An, Do-Hyun Kim, 'An architecture model for supporting power saving services for mobile wireless Ad-hoc networks', LNCS3560, pp. 415-416, SpringerVerlag, 2005 
8. W. Su, A. Sadek, and K. Ray Liu, 'SER performance analysis and optimum power allocation for decode-and-forward cooperation protocol in wireless networks,' Proceedings of WCNC2005, Vol. 2, pp. 984-989, March 2005 
9. X. Deng, A. Haimovich, 'Power allocation for cooperative relaying in wireless networks,' IEEE Communications Letters, Vol.9, No. 11, pp. 994-996, Nov. 2005 
10. M. K. Simon, M.-S. Alouini, Digital communication over fading channels, John Wiley & Sons, Inc., 2005 
11. M. Hasna, M. -S. Alouini, 'Performance of two-hop relayed transmissions over Rayleigh fading channels', Proceedings of VTC2002, vol. 4, pp. 1992-1996, Sept. 2002 
12. J. N. Lanememan, G. W. Womell, 'Energy efficient antenna sharing and relaying for wireless networks,' Proceedings of WCNC2000, Vol. 1, pp. 7-12, Sept. 2000 
13. I. Hammerstrom, M. Kuhn, and A. Wittneben, 'Impact of relay gain allocation on the performance of cooperative diversity networks,' Proceedings of VTC2004-Fall, Vol.3, pp. 1815-1819, Sept. 2004 

이 논문을 인용한 문헌 (0)

1. 이 논문을 인용한 문헌 없음