Power Allocation for Cognitive Two-Way AF Relay Networks with Asymmetric Traffic Requirements

详细信息    查看全文

• 作者：Mi Hu ; Jianhua Ge ; Xiaoye Shi
• 关键词：Asymmetric traffic requirements ; Cognitive radio networks ; Two ; way relay ; Outage probability ; Power allocation
• 刊名：Wireless Personal Communications
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：84
• 期：4
• 页码：2723-2733
• 全文大小：652 KB
• 参考文献：1.Force, S. P. T. (2002). Spectrum policy task force report. Federal Communications Commission ET Docket, 02, 135.
  2.Mitola, J., & Maguire, G. Q. (1999). Cognitive radio: Making software radios more personal. IEEE Personal Communication, 6(4), 13-8.CrossRef
  3.Katti, S., Gollakota, S., & Katabi, D. (2007). Embracing wireless interference: Analog network coding. Computer Communication Review, 37(4), 397-08.CrossRef
  4.W. Shin, N. Lee, J. B. Lim, & C. Y. Shin. (2009). An optimal transmit power allocation for the two-way relay channel using physical-layer network coding. In 2009 IEEE international conference on communications workshops (pp. 1-). Dresden, Germany.
  5.L.K. Saliya Jayasinghe, N. Rajatheva, & M. Latva-aho. (2011). Optimal power allocation for PNC relay based communications in cognitive radio. In ICC 2011-011 IEEE international conference on communications (pp. 1-). Kyoto, Japan.
  6.Ubaidulla, P., & Aissa, Sonia. (2012). Optimal relay selection and power allocation for cognitive two-way relaying networks. IEEE Wireless Communications Letters, 1(3), 225-28.CrossRef
  7.M. Hu, J. Ge, & X. Shi. 2013. Optimal power allocation scheme for the two-way relay channel using ANC in cognitive radio. In Proceedings of 2013 international conference on WCSP (pp. 1-). Hangzhou, China.
  8.Upadhyay, P. K., & Prakriya, S. (2011). Performance of analog network coding with asymmetric traffic requirements. IEEE Communications Letters, 15(6), 647-49.CrossRef
  9.Ji, X., Zheng, B., Cai, Y., & Zou, L. (2012). On the study of half-duplex asymmetric two-way relay transmission using an amplify-and-forward relay. IEEE Transactions on Vehicular Technology, 61(4), 1649-664.CrossRef
  10.Zhang, C., Ge, J., Li, J., & Hu, Y. (2012). Fairness-aware power allocation for asymmetric two-way AF relaying networks. Electronics Letters, 48(15), 956-61.CrossRef
  11.Abramowitz, M., & Stegun, I. A. (1970). Handbook of mathematical functions with formulas, graphs, and mathematical tables. New York: Dover Publication.
  12.Hasna, M. O., & Alouini, M. (2004). Optimal power allocation for relayed transmissions over Rayleigh fading channels. IEEE Transactions on Wireless Communications, 3(6), 1999-004.CrossRef
  
• 作者单位：Mi Hu (1)
  Jianhua Ge (1)
  Xiaoye Shi (1)
  
  1. State Key Laboratory of Integrated Service Networks, Xidian University, Mailbox 86 No. 2, South Taibai Road, Xi’an, Shaanxi, 710071, China
  
• 刊物类别：Engineering
• 刊物主题：Electronic and Computer Engineering
  Signal,Image and Speech Processing
  Processor Architectures
  
• 出版者：Springer Netherlands
• ISSN：1572-834X

文摘

In this paper, we study the power allocation for two-way amplify-and-forward relay networks with asymmetric traffic requirements in cognitive radio. The proposed power allocation scheme is achieved by minimizing the weaker link’s individual outage probability under the sum-power constraint and interference power threshold (IPT) constraints of the primary user (PU). Particularly, for the purpose of accomplishing the power allocation more realistically, the interference to each other between PU and secondary user (SU) and relay is taken into consideration. And the closed-form solution is derived for the optimum power allocation scheme of each case. Numerical results confirm that the proposed scheme improves the system performance compared with the equal power allocation scheme under various traffic requirements. The outage probability of SU communication is limited by the IPT constraints of PU and is affected significantly by the IPT level of PU. Furthermore, regardless of the symmetric or asymmetric traffic requirements, the proposed power allocation scheme is more suitable for cognitive two-way relaying networks. Keywords Asymmetric traffic requirements Cognitive radio networks Two-way relay Outage probability Power allocation