Skip to main content
SpringerLink
Log in

Energy efficiency enhancement of two-way amplifier forward relaying with channel estimation error

  • Published:
Journal of Central South University Aims and scope Submit manuscript

Abstract

In order to save energy consumption of two-way amplifier forward (AF) relaying with channel estimation error, an energy efficiency enhancement scheme is proposed in this work. Firstly, through the analysis of two-way AF relaying mode with channel estimation error, the resultant instantaneous SNRs at end nodes is obtained. Then, by using a high SNR approximation, outage possibility is acquired and its simple closed-form expression is represented. Specially, for using the energy resource more efficiently, a low-complexity power allocation and transmission mode selection policy is proposed to enhance the energy efficiency of two-way AF relay system. Finally, relay priority region is identified in which cooperative diversity energy gain can be achieved. The computer simulations are presented to verify our analytical results, indicating that the proposed policy outperforms direct transmission by an energy gain of 3 dB at the relative channel estimation error less than 0.001. The results also show that the two-way AF relaying transmission loses the two-way AF relaying transmission loses its superiority to direct transmission in terms of energy efficiency when channel estimation error reaches 0.03.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. ISMAIL M, ZHUANG Wei-hua. Network cooperation for energy saving in green radio communications [J]. IEEE Wireless Commun, 2011, 18(9): 76–81.

    Article  Google Scholar 

  2. FANG Yu-guang. Green communications: Design the smart environment without harming ourselves [J]. IEEE Wireless Commun, 2011, 18(5): 2–3.

    Article  Google Scholar 

  3. GUR G, ALAHOZ F. Green wireless communications via cognitive dimension: An overview [J]. IEEE network, 2011, 25(2): 50–56.

    Article  Google Scholar 

  4. ZHANG Sheng-li, LIEW Chang-soung, Lam P P. Hot topic: Physical-layer network coding [C]// Proc ACM Mobicom, Los Angeles, California, USA: ACM, 2006: 358–365.

    Google Scholar 

  5. WANG Zi-bin, XIANG Liang-jun, ZHENG Lin-hua, DING Hong. MSMSE-based optimal beamforming design and simplification on AF MIMO two-way relay channels [J]. Journal of Central Soutral University, 2012, 19(2): 465–470.

    Article  Google Scholar 

  6. RANKOV B, WITTNEBEN A. Spectral efficiency protocols for half-duplex fading relay channels [J]. IEEE J Select Areas Commun, 2006, 25(2): 379–389.

    Article  Google Scholar 

  7. SUN Qi, LI Li-hua, SONG Lei. Energy efficient relay selection for two-way relay system [C]// IEEE Vehicular Technology Conference, Beijing, China: IEEE Press, 2012: 1–5.

    Google Scholar 

  8. ZHOU Min, CUI Qi-mei, JANTTI R, TAO Xiao-feng. Energy-efficient relay selection and power allocation for two-way relay channel with analog network coding [J]. IEEE Commun Lett, 2012, 16(6): 816–819.

    Article  Google Scholar 

  9. XIONG Xiong, GE Jian-hua, LI Jing, TANG Yun-shuai. Cooperative diversity based on rotation code [J]. Journal of Central South University of Technology, 2009, 16: 0280–0284.

    Article  Google Scholar 

  10. YI Zhi-hang, JU Min-chul, KIM Il-min. Outage probability and optimum power allocation for analog network coding [J]. IEEE Trans Wirel Commun, 2011, 10(2): 407–412.

    Article  Google Scholar 

  11. ZHANG Yuan-Yuan, MA Yi, TAFAZOLLI R. Power allocation for bidirectional AF relaying over Rayleigh fading channels [J]. IEEE Commun Lett, 2010, 14(2): 145–147.

    Article  Google Scholar 

  12. GUO Hui, GE Jian-hua. Diversity order of multiuser two-way relay networks with beamforming over Nakagamim fading channels [J]. Sci China Inf Sci, 2011, 54: 1986–1990.

    Article  MathSciNet  Google Scholar 

  13. WU Yi, PATZOLD M. Performance analysis of amplify-and-forward cooperative communication systems with channel estimation errors [C]// IEEE Int Conf on Commun Systems, Guangzhou, China: IEEE Press, 2008: 1620–1624.

    Google Scholar 

  14. ABRAMOWITZ M, STEGUN I A. Handbook of mathematical functions with formulas, graphs, and mathematical tables [M]. New York: Dover Publication, 1970: 375–376.

    Google Scholar 

  15. GRADSHTEYN I S, RYZHIK I M. Table of integrals, series, and products [M]. London: Academic Press, 2007: 367–368.

    Google Scholar 

  16. HAN S, AHN S, OH E, HONG D. Effect of channel-estimation error on ber performance in cooperative transmission [J]. IEEE Trans Vehicular Tech, 2009, 58(4): 4060–4070.

    Google Scholar 

  17. RAPPAPORT T S. Wireless Communications: Principles and practice [M]. New Jersey: Prentice-Hall, 2002: 138–139.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, 710071, China

    Xiao-ye Shi  (师晓晔), Jian-hua Ge  (葛建华), Jing Li  (李靖) & Chen-si Zhang  (张沉思)

Authors
  1. Xiao-ye Shi  (师晓晔)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Jian-hua Ge  (葛建华)
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Jing Li  (李靖)
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Chen-si Zhang  (张沉思)
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Xiao-ye Shi  (师晓晔).

Additional information

Foundation item: Project(IRT0852) supported by the Program for Changjiang Scholars and Innovative Research Team in University, China; Project(2012CB316100) supported by the National Basic Research Program of China; Projects(61101144, 61101145) supported by the National Natural Science Foundation of China; Project(B08038) supported by the “111” Project, China; Project(K50510010017) supported by the Fundamental Research Funds for the Central Universities, China

Rights and permissions

Reprints and permissions

About this article

Cite this article

Shi, Xy., Ge, Jh., Li, J. et al. Energy efficiency enhancement of two-way amplifier forward relaying with channel estimation error. J. Cent. South Univ. 21, 987–992 (2014). https://doi.org/10.1007/s11771-014-2028-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11771-014-2028-y

Key words

Search

Navigation