北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2017, Vol. 40 ›› Issue (3): 31-36.doi: 10.13190/j.jbupt.2017.03.003

• 论文 • 上一篇    下一篇

保障个体性能的半盲干扰对齐功率分配方法

杨青1, 蒋挺1, 袁坚2, 周正1   

  1. 1. 北京邮电大学 信息与通信工程学院, 北京 100876;
    2. 清华大学 电子工程系, 北京 100084
  • 收稿日期:2017-01-25 出版日期:2017-06-28 发布日期:2017-05-25
  • 作者简介:杨青(1988-),女,博士生,E-mail:emma_2406@126.com.cn;蒋挺(1962-),男,教授,博士生导师.
  • 基金资助:
    国家自然科学基金项目(61671075,61673237)

Power Allocation Algorithm of Semi-Blind Interference Alignment Based on Individual Performance

YANG Qing1, JIANG Ting1, YUAN Jian2, ZHOU Zheng1   

  1. 1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
  • Received:2017-01-25 Online:2017-06-28 Published:2017-05-25

摘要: 针对盲干扰对齐机制平均功率分配导致功率利用率低的问题,提出了一种半盲干扰对齐功率分配算法.在功率受限场景下,该算法能够提高整体性能,同时保障个体性能.首先,分析了功率分配对盲干扰对齐性能的影响;其次,建立了功率受限的盲干扰对齐模型,提出了最大化传输速率同时保护用户个体性能的功率分配目标;最后,为满足目标函数的约束,提出基于回溯梯度下降的功率分配算法.仿真结果表明,相比于平均功率分配,所提算法可以将系统性提高约53%.

关键词: 半盲干扰对齐, 个体性能, 功率分配, 用户反馈

Abstract: A power allocation algorithm was proposed to improve the power efficiency in semi-blind interference alignment. In the power-limited scenario, the proposed algorithm can improve the overall performance with individual performance guarantee. First, the impact of power allocation on the performance of blind interference alignment was analyzed. Second, the model of semi-blind interference alignment in the limited-power scenario is built and the optimal objective was proposed to maximize the transmission rate with individual performance guarantee. Finally, the retrospective gradient descent scheme based power allocation algorithm was designed and analyzed. Extensive simulations demonstrate that the performance of the proposed algorithm is about 53% higher than the average power allocation scheme.

Key words: semi-blind interference alignment, individual performance, power allocation, feedback

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