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

  • 제12권6호
  • /
  • Pages.291-296
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  • 2012
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  • 2289-0238(pISSN)
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  • 2289-0246(eISSN)
한국인터넷방송통신학회 (The Institute of Internet, Broadcasting and Communication)
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레일리 페이딩 채널에서 이상 인지 언더레이 네트워크 멀티 홉 전송

Multihop Transmission in Cognitive Underlay Network Over Rayleigh Fading Channels

  • 박상영 (울산대학교 전기전자정보시스템공학부) ;
  • 공형윤 (울산대학교 전기전자정보시스템공학부)
  • 투고 : 2012.10.23
  • 심사 : 2012.12.14
  • 발행 : 2012.12.31
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초록

본 논문은 인지 언더레이 네트워크에서 멀티 홉 전송을 제안한다. 2차 송신기(S)에서 수신기(D)까지 신호를 전송할 때, N개의 중계기와 N+1 개의 언더레이 중계기를 이용하여 신호를 전송한다. 본 논문에서 채널과 레일리 페이딩 채널을 고려한다. 언더레이 네트워크에서 2차 송신기는 최대 간섭 임계값보다 1차 사용자에 의한 간섭이 낮게 전력을 적용한다. 송신기와 중계기 사이의 홉 전송을 고려하여 송신 전력과 신호 대 잡음 비율(SNR)을 구한다. 송신기와 수신기 사이 존재하는 언더레이 네트워크상의 중계기의 수의 변화에 따른 송신 전력과 신호 대 잡음 비율을 구한다. 송신전력과 신호 대 잡음 비율(SNR)을 비교하여 언더레이 네트워크상에서 최적의 중계기 수와 최적의 threshold 값을 찾는다.

In this Paper, we propose a multi-hop transmission in cognitive underlay network. In Secondary network, We assume that a secondary source S attempts to transmit D its signal to a secondary destination via N+1 hops with help of N relays $R_1$, $R_2$, ${\ldots}$, $R_N$. At hop k between relay $R_k$ and relay $R_{k+1}$. we assume that there is a primary user $PU_k$. In this paper, we assume that these channels are Rayleigh fading channels. In underlay network, the secondary transmitter has to adapt its power so that the interference caused at the primary user is less than a maximum interference threshold. considering the hop transmission between the transmitter and the repeater, we find transmit power and signal-to-noise ratio(SNR). Between the transmitter from the receiver depending on the number of relay in the underlay network, we compared to find the transmit power and signal-to-noise ratio(SNR). Finally we find optimal number of relay and optimal threshold value.

키워드

참고문헌

  1. J. Mitola and G. Q. Maguire, "Cognitive radio: Making software radios more personal," IEEE Personal Communications, vol. 6, no. 4, pp. 13-18, 1999. https://doi.org/10.1109/98.788210
  2. S. Haykin, "Cognitive radio: Brain-empowered wireless communications," IEEE Journal on Selected Areas in Communications, vol. 23, no. 2, pp. 201-220, 2005. https://doi.org/10.1109/JSAC.2004.839380
  3. O. Simeone, I. Stanojev, S. Savazzi, Y. Bar-Ness, U. Spagnolini, and R. Pickholtz, "Spectrum leasing to cooperating secondary adhoc networks," IEEE Journal on Selected Areasin Communication, vol. 26, no.1, pp. 203-213, 2008. https://doi.org/10.1109/JSAC.2008.080118
  4. Yang Han, See Ho Ting, "Cooperative Decode-and-Forward Relaying for Secondary Spectrum Access," IEEE Transactions on Wireless Communications, vol. 8, no. 10, pp. 4945-4950, 2009. https://doi.org/10.1109/TWC.2009.081484
  5. T. T. Duy and H.Y. Kong, "Performance Analysis of Two-Way Hybrid Decode-and-Amplify Relaying Scheme with Relay Selection for Secondary Spectrum Access", Wireless Personal Communications, pp. 1-20, April 2012.
  6. Y. Guo, G. Kang, N. Zhang, W. Zhou and P. Zhang, "Outage Performance of Relay assisted cognitive-radio system under spectrum sharing constraints" Electronics Letters, vol. 46, no. 2, pp. 182-184, 2010. https://doi.org/10.1049/el.2010.2159
  7. J. Lee, H. Wang, J.G. Andrews and D. Hong, "Outage Probability of Cognitive Relay Networks with Interference Constraints," IEEE Transactions on Wireless Communication, vol. 10, no. 2, pp. 390-395, 2011. https://doi.org/10.1109/TWC.2010.120310.090852
  8. T. Q. Duong, V. N. Q. Bao, G. C. Alexandropoulos and H. J. Zepernick, "Cooperative spectrum sharing networks with AF relay and selection diversity", IET Electronics Letters, vol.47, no.20, pp. 1149-1151, Sep. 2011. https://doi.org/10.1049/el.2011.2592
  9. M.O. Hasna and M.S. Alouini, "Outage probability of multihop transmission over nakagami fading channels," IEEE Communication Letters, vol. 7, no. 5, pp. 216-218, 2003. https://doi.org/10.1109/LCOMM.2003.812178
  10. J. Boyer, David D. Falconer, H. Yanikomeroglu, "Multihop diversity in wireless relaying channels," IEEE Transaction on Communications, vol. 52, no. 10, pp. 1820-1830, October 2004. https://doi.org/10.1109/TCOMM.2004.836447
  11. G. K. Karagiannidis, "Performance bounds of multihop wireless communications with blind relays over generalized fading channels," IEEE Trans. Wireless Commun., vol. 5, no. 3, pp. 498-503, March 2006. https://doi.org/10.1109/TWC.2006.1611077
  12. T. T. Duy, A. Anpalagan and H.Y. Kong, "Multi-hop Cooperative Transmission Using Fountain Codes over Rayleigh Fading Channels", Journal of Communications and Networks, vol. 14, no. 3, pp. 267-272, June 2012. https://doi.org/10.1109/JCN.2012.6253087

피인용 문헌

  1. Performance Analysis of the Amplify-and-Forward Scheme under Interference Constraint and Physical Layer Security vol.14, pp.1, 2014, https://doi.org/10.7236/JIIBC.2014.14.1.179
  2. Dynamic Frequency Allocation in OFDMA Cellular Networks vol.14, pp.6, 2013, https://doi.org/10.5762/KAIS.2013.14.6.2992