电信科学 ›› 2015, Vol. 31 ›› Issue (2): 63-68.doi: 10.11959/j.issn.1000-0801.2015011

• 研究与开发 • 上一篇    下一篇

基于不完备CSI的OFDMA公平资源分配算法

吴耀辉1,2,李有明1,金丽萍1,2,邵鹏飞2   

  1. 1 宁波大学通信技术研究所 宁波 315211
    2 浙江万里学院电子信息学院 宁波 315100
  • 出版日期:2015-02-20 发布日期:2017-03-18
  • 基金资助:
    国家自然科学基金资助项目;浙江省自然科学基金资助项目;宁波市自然科学基金资助项目;宁波市自然科学基金资助项目;“信息与通信工程”浙江省重中之重学科开放基金资助

Fair Resource Allocation Algorithm for OFDMA System with Imperfect CSI

Yaohui Wu1,2,Youming Li1,Liping Jin1,2,Pengfei Shao2   

  1. 1 Institute of Communication Technology, Ningbo University, Ningbo 315211, China
    2 School of Electronic and Information Engineering, Zhejiang Wanli University, Ningbo 315100, China
  • Online:2015-02-20 Published:2017-03-18
  • Supported by:
    The National Natural Science Foundation of China;Zhejiang Provincial Natural Science Foundation;Ningbo Natural Science Foundation;Ningbo Natural Science Foundation;Zhejiang Information and Communication Engineering Open Foundation of the Most Important Subjects

摘要:

针对在信道状态信息不完备时,很难兼顾系统容量和公平性这一问题,通过引入公平松弛因子,提出一种公平性可调的遍历容量最大化资源分配算法。为了降低计算复杂度,在利用对偶优化方法求解拉格朗日算子过程中,提出同层循环迭代的搜索方式以代替传统的内外层循环迭代方式。通过仿真和分析表明,该算法在满足公平性的同时实现了遍历容量最大化,且计算复杂度明显降低。

关键词: 正交频分复用多址接入, 资源分配, 不完备信道状态信息, 遍历容量, 公平性

Abstract:

Existing resource allocation algorithms can't balance system capacity and fairness well when the channel state information is imperfect. In order to solve this problem, a fair resource allocation algorithm was proposed to maximize the system ergodic capacity, while the fairness could be adjusted flexibly by introducing the fairness relaxation factor. In order to reduce the complexity in the use of dual optimization method for solving the lagrange operator process, an iteration searching method in the same layer was proposed to replace the traditional multi-layer iteration searching method. Simulation results show that the proposed algorithm can effectively maximize the system ergodic capacity and guarantee the fairness, while the computational complexity was reduced significantly.

Key words: OFDMA, resource allocation, imperfect channel state information, ergodic capacity, fairness

No Suggested Reading articles found!