北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2013, Vol. 36 ›› Issue (2): 50-54.doi: 10.13190/jbupt.201302.50.zhangy

• 论文 • 上一篇    下一篇

基于严格势博弈的干扰对齐

章扬1,2,周正1,石磊3,李斌1,李德建1   

  1. 1. 泛网无线通信教育部重点实验室(北京邮电大学), 北京 100876; 2. 中国石油大学(华东) 计算机与通信工程学院, 山东 青岛 266580; 3. 中国电子科技集团公司第五十四研究所, 石家庄 050081
  • 收稿日期:2012-05-06 修回日期:2013-01-14 出版日期:2013-04-30 发布日期:2013-03-25
  • 通讯作者: 章扬 E-mail:zhangyang@upc.edu.cn
  • 作者简介:章扬(1980-),男,博士生,Email:zhangyang@upc.edu.cn; 周正(1945-),男,教授,博士生导师
  • 基金资助:

    国家自然科学基金项目(60972079,61271180,60902046);中央高校基本科研业务费专项资金项目(2012RC0103);韩国知识经济部仁荷大学ITRC基金项目(NIPA-2011-C1090-1111-0007)

Interference Alignment Based on Exact Potential Game

ZHANG Yang1,2, ZHOU Zheng1, SHI Lei3, LI Bin1, LI De-jian1   

  1. 1. Key Laboratory of Universal Wireless Communications (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China;<br>2. College of Computer and Communication Engineering, China University of Petroleum, Shandong Qingdao 266580, China;<br>3. The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China
  • Received:2012-05-06 Revised:2013-01-14 Online:2013-04-30 Published:2013-03-25
  • Contact: Yang ZHANG E-mail:zhangyang@upc.edu.cn
  • Supported by:

    ;National Science and Technology Major Projects

摘要:

在经典多输入多输出(MIMO)干扰信道干扰对齐算法中,单纯最大化用户期望信号势必对其他用户形成干扰,从而限制整体信道容量的提升. 从多对干扰链路构成一个博弈群体的角度出发,提出了一种基于严格势博弈的干扰对齐算法;构建了基于博弈论的干扰对齐算法数学模型,通过构造有界势函数证明该博弈为有界严格势博弈,能通过有限次迭代收敛到<em>ε</em>纳什均衡点;讨论了代价因子对算法性能的影响. 实验结果表明,相对于经典的min-INL和max-SINR 2种干扰对齐算法,新算法具备更优的性能,可显著提高复杂MIMO干扰信道中的多用户信道容量.

关键词: 多输入多输出, 干扰对齐, 严格势博弈, <em>ε</em>纳什均衡点, 弱有限改进特性

Abstract:

Maximizing the users expected signal may cause interferences to other users in current interference alignment algorithms for multiple-input multiple-output (MIMO) interference channels. It reduces the total channel capacities. Considering the fact that multiple interfering links consist of a game group, a new interference alignment algorithm is presented based on the exact potential game theory. The algorithm designs a mathematic model for interference alignment algorithm based on game theory, and proves that the proposed game is a bounded exact potential game by constructing a bounded potential function which converges to a <em>ε</em>-Nash equilibrium through finite interactions, and also the impact of cost factor on the performance of algorithms is discussed. Simulation shows that the new algorithm is with better performance than the existing minimum-interference (min-INL) and maximum-signal interference noise ratio (max-SINR) interference alignment algorithms and can significantly improve the multi-user networks capacity.

Key words: multiple-input multiple-output, interference alignment, exact potential game, <em>ε</em>-Nash equilibrium point, approximate finite improvement property

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