中国邮电高校学报(英文) ›› 2011, Vol. 18 ›› Issue (6): 8-13.doi: 10.1016/S1005-8885(10)60116-1

• Wireless • 上一篇    下一篇

Asymptotic Energy Efficiency Analysis for the State-of-the-Art Relaying Protocols

王禹凝1,张建华1,徐薇2   

  1. Key Lab of Universal Wireless Communications, Ministry of Education, Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2011-04-28 修回日期:2011-07-14 出版日期:2011-12-31 发布日期:2011-12-30
  • 通讯作者: 王禹凝 E-mail:yuning.wang11@gmail.com
  • 基金资助:

    This work was supported by China Important National Science and Technology Specific Projects (2009ZX03007-003-01), and Sino-Finland International Cooperation Program of MOST (2010DFB10410).

Asymptotic energy efficiency analysis for the state-of-the-art relaying protocols

Key Lab of Universal Wireless Communications, Ministry of Education, Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China   

  • Received:2011-04-28 Revised:2011-07-14 Online:2011-12-31 Published:2011-12-30
  • Supported by:

    This work was supported by China Important National Science and Technology Specific Projects (2009ZX03007-003-01), and Sino-Finland International Cooperation Program of MOST (2010DFB10410).

摘要:

This article analyzes the energy-efficiency performances of fixed relaying schemes, selection relaying schemes and incremental relaying schemes in the three-node relay network. The closed-form asymptotic energy per good-bit (EPG) expressions for the state-of-the-art relaying protocols at high signal-to-noise ratio (SNR) regime are derived. In the formulation of the energy consumption model, the transmission, circuit and retransmission energies are all taken into account. To facilitate the comparison of energy-efficiency performances between different relaying protocols, the link reliabilities and retransmission probabilities are determined by the asymptotic outage probabilities at high SNR regime under the Rayleigh fading assumption. Computer simulations are carried out in both symmetric and asymmetric relay networks. The simulation results show the differences of system energy expenditure between these state-of-the-art relaying protocols. Finally some practical implications can be made from the observation.

关键词:

green communication, EPG, relay, energy-efficiency, outage probability

Abstract:

This article analyzes the energy-efficiency performances of fixed relaying schemes, selection relaying schemes and incremental relaying schemes in the three-node relay network. The closed-form asymptotic energy per good-bit (EPG) expressions for the state-of-the-art relaying protocols at high signal-to-noise ratio (SNR) regime are derived. In the formulation of the energy consumption model, the transmission, circuit and retransmission energies are all taken into account. To facilitate the comparison of energy-efficiency performances between different relaying protocols, the link reliabilities and retransmission probabilities are determined by the asymptotic outage probabilities at high SNR regime under the Rayleigh fading assumption. Computer simulations are carried out in both symmetric and asymmetric relay networks. The simulation results show the differences of system energy expenditure between these state-of-the-art relaying protocols. Finally some practical implications can be made from the observation.

Key words:

green communication, EPG, relay, energy-efficiency, outage probability