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计算机工程 ›› 2013, Vol. 39 ›› Issue (7): 127-132. doi: 10.3969/j.issn.1000-3428.2013.07.029

• 移动互联与通信技术 • 上一篇    下一篇

双向中继系统的联合中继选择和功率分配策略

曹申好,刘顺兰   

  1. (杭州电子科技大学通信工程学院,杭州 310018)
  • 收稿日期:2012-07-09 出版日期:2013-07-15 发布日期:2013-07-12
  • 作者简介:曹申好(1987-),男,硕士研究生,主研方向:协作通信,无线通信管理;刘顺兰,教授
  • 基金资助:
    2012年浙江省大学生创新活动计划基金资助项目

Joint Relay Selection and Power Allocation Strategy of Two-way Relay System

CAO Shen-hao, LIU Shun-lan   

  1. (School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China)
  • Received:2012-07-09 Online:2013-07-15 Published:2013-07-12

摘要: 为提高双向中继系统的可达速率和,基于网络编码的双向中继系统模型,提出一种最大化可达速率和的联合中继选择与功率分配策略。给出最大化最小信道增益(MMCG)和最大化信道增益调和平均值的中继选择方案。在中继选择策略的基础上,给出一种基于双向中继系统可达速率和最大化准则的最优功率分配方案。仿真结果表明,与联合BRS中继选择功率分配方案相比,联合MMCG中继选择和最优功率分配方案系统可达速率约提高1.6 bit/s/Hz。

关键词: 双向中继系统, 模拟网络编码, 物理层网络编码, 信道增益, 中继选择, 功率分配

Abstract: In order to improve the sum-rate of two-way relay system, this paper proposes a joint relay selection and power allocation strategy based on in network coding two-way relay system model. A relay selection scheme of Maximized Minimum Channel Gain (MMCG) and Maximize Harmonic Average(MHA) is proposed. The optimal power allocation scheme between the sources and the relay in two-way relay system is proposed based on maximizing the sum rate of the system. Simulation results show that the proposed joint MMCG relay selection and the optimal allocation strategy can effectively improve 1.6 bit/s/Hz on the sum rate of system in two-way relay system with Physical-layer Network Coding(PNC) than joint BRS relay selection strategy.

Key words: two-way relay system, Analog Network Coding(ANC), Physical-layer Network Coding(PNC), channel gain, relay selection, power allocation

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