Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (6): 19-24.doi: 10.1016/S1005-8885(09)60520-3

• Wireless • 上一篇    下一篇

Spectral efficient half-duplex relaying with interference suppression

李行政1,常玲君1,刘元安2,谢刚3   

  1. Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2010-03-31 修回日期:2010-07-21 出版日期:2010-12-30 发布日期:2010-12-06
  • 通讯作者: 李行政 E-mail:lixingzheng1987@163.com
  • 基金资助:

    中瑞国际IMT-Advanced合作项目(2008DFA11780);中加国际科学与技术合作项目 (绿色宽带无线通信关键技术研究及在智能电网中的应用;国家自然科学基金资助项目(60802033、60873190);国家级.国家“863计划”项目

Spectral efficient half-duplex relaying with interference suppression

  1. Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2010-03-31 Revised:2010-07-21 Online:2010-12-30 Published:2010-12-06

摘要:

Two-hop relaying systems suffer spectral efficiency loss due to the half-duplex property of relays. This paper proposes an efficient relaying protocol which can recover the spectral efficiency loss but still work with half-duplex relays. However, there exists inter-relay interference which degrades the performance of the protocol. With this consideration, a power control policy is derived to suppress the interference using game theory, and then an algorithm is given to facilitate distributed implementation. Furthermore, impact of deploying more destination antennas on performance of the relaying protocol is investigated. Simulation results show that, with the power control policy, the proposed relaying protocol can achieve high spectral efficiency.

关键词:

relaying protocol, distributed power control, cooperative communication, decode-and-forward relay, game theory

Abstract:

Two-hop relaying systems suffer spectral efficiency loss due to the half-duplex property of relays. This paper proposes an efficient relaying protocol which can recover the spectral efficiency loss but still work with half-duplex relays. However, there exists inter-relay interference which degrades the performance of the protocol. With this consideration, a power control policy is derived to suppress the interference using game theory, and then an algorithm is given to facilitate distributed implementation. Furthermore, impact of deploying more destination antennas on performance of the relaying protocol is investigated. Simulation results show that, with the power control policy, the proposed relaying protocol can achieve high spectral efficiency.

Key words:

relaying protocol, distributed power control, cooperative communication, decode-and-forward relay, game theory