English

应用科学学报 ›› 2011, Vol. 29 ›› Issue (4): 381-384.doi: 10.3969/j.issn.0255-8297.2011.04.008

• 通信工程 • 上一篇    下一篇

基于QoS的认知OFDM无线电系统自适应资源分配

徐爽， 赵晓晖， 袁浩   

  1. 吉林大学通信工程学院，长春130012
  • 收稿日期:2011-01-13 修回日期:2011-05-30 出版日期:2011-07-30 发布日期:2011-05-30
  • 通信作者: 赵晓晖，教授，博导，研究方向：无线通信理论、认知无线电等，E-mail: xhzhao@jlu.edu.cn

Adaptive Resource Allocation Based on QoS in OFDM Cognitive Radio System

XU Shuang, ZHAO Xiao-hui, YUAN Hao   

  1. College of Communication Engineering, Jilin University, Changchun 130012, China
  • Received:2011-01-13 Revised:2011-05-30 Online:2011-07-30 Published:2011-05-30

PDF

1668

被引次数

1

摘要：

摘要：根据认知无线电的特点和正交频分复用的传输特性，提出了一种针对认知OFDM无线电系统的自适应资源分配算法. 该算法在子载波和功率分配中，通过把次用户对主用户干扰的功率限制在主用户可容忍的门限以下，使次用户信道容量最大化. 同时，利用比例公平性保证了每个用户的通信服务质量. 仿真结果验证了所提算法的性能和有效性.

关键词: 资源分配, 认知无线电, 正交频分复用, 服务质量

Abstract:

Abstract: Based on the characteristics of cognitive radio and transmission properties of OFDM, an adaptive resource allocation algorithm in OFDM cognitive radio system is proposed. By keeping the interference introduced to the primary users within a tolerable range in sub-carrier allocation and power allocation, the proposed algorithm maximizes the system throughout. In addition, this scheme can guarantee quality of service(QoS)
among secondary users based on a fairness principle. Simulation results show performance and effectiveness of this algorithm.

Key words: resource allocation, cognitive radio, OFDM, quality of service(QoS)

中图分类号: