电信科学 ›› 2015, Vol. 31 ›› Issue (1): 94-99.doi: 10.11959/j.issn.1000-0801.2015003

• 研究与开发 • 上一篇    下一篇

基于差分进化算法的多用户OFDM自适应资源分配

祝杨坤,达新字,张亚普   

  1. 空军工程大学信息与导航学院 西安 710077
  • 出版日期:2015-01-15 发布日期:2017-02-21
  • 基金资助:
    国家自然科学基金资助项目

Multiuser OFDM Adaptive Resource Allocation Based on Differential Evolution Algorithm

Yangkun Zhu,Xinyu Da,Yapu Zhang   

  1. Information and Navigation College, Air Force Engineering University, Xi'an 710077, China
  • Online:2015-01-15 Published:2017-02-21
  • Supported by:
    The National Natural Science Foundation of China

摘要:

针对多用户正交频分复用系统自适应资源分配问题,提出一种改进的子载波和基于差分进化算法的功率自适应分配算法。该算法首先在均等功率下进行子载波分配,然后通过添加约束条件检测改进步骤,改进差分进化算法,并采用该算法根据设置的兼顾用户公平性与系统容量的目标函数,全局寻优实现用户间的功率分配。仿真结果表明,算法在低算法复杂度及兼顾用户公平性的情况下实现了较高的系统容量提升,证明其有效性。

关键词: 多用户正交频分复用, 自适应资源分配, 差分进化算法, 系统容量

Abstract:

An improved subcarrier and power allocation algorithms based on differential evolution algorithm was proposed for the adaptive resource allocation problem of multiuser orthogonal frequency division multiplexing. Subcarrier allocation was first implemented to distribute the total power uniformly on each subcarrier. Then via adding the step of detecting and improving constraints to improve the differential evolution algorithm and using it to achieve power allocation with a fitness function of the user's fairness and system capacity. Computer simulation results show that the proposed algorithm can achieve high improvement of the system capacity under low complexity and maintaining the fairness among users, the effectiveness of the algorithm was verified.

Key words: multiuser orthogonal frequency division multiplexing, adaptive resource allocation, differential evolution, algorithm, system capacity

No Suggested Reading articles found!