北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (2): 69-73.doi: 10.13190/jbupt.201002.69.273

• 研究报告 • 上一篇    下一篇

OFDMA系统中节能的遗传禁忌搜索功率分配

张天魁1, 郑洁莹2, 曾志民1   

  1. (1北京邮电大学 信息与通信工程学院, 北京 100876;2中国联合网络通信有限公司 北京市分公司, 北京 100045)
  • 收稿日期:2009-07-28 修回日期:2009-12-22 出版日期:2010-04-28 发布日期:2010-04-28
  • 通讯作者: 张天魁
  • 作者简介:张天魁(1980—), 男, 讲师, 博士, Email: zhangtiankui@bupt.edu.cn.
  • 基金资助:

    国家自然科学基金项目(2003112255); 中央高校基本科研业务费专项资金资助项目(BUPT2009RC0113)

A Genetic and Tabu Search Based Power Allocation Algorithm for Multi-cell OFDMA Systems

ZHANG Tian-kui1, ZHENG Jie-ying2, ZENG Zhi-min1   

  1. (1School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;  2Beijing Branch, China United Network Communications Corporation, Beijing 100045, China)
  • Received:2009-07-28 Revised:2009-12-22 Online:2010-04-28 Published:2010-04-28

摘要:

提出了一种用于多小区正交频分多址系统的功率分配算法. 以最小化系统发送功率为优化目标,在满足每个用户速率要求条件下,将遗传算法与禁忌搜索算法相结合,求解了多小区同频子信道上的功率分配问题. 定义了适应度函数,并给出了算法实现过程. 仿真结果表明,与已有算法相比,新提出的算法能在满足所有用户的速率要求条件下节约系统总发送功率,提高能量效率.

关键词: 正交频分多址, 功率分配, 遗传算法, 禁忌搜索

Abstract:

A power allocation algorithm is proposed for multicell orthogonal frequency division multiple access (OFDMA) systems. The optimization objective is to minimize the system transmission power under the constraint of the users requirements on data rate. The power allocation on cofrequency subchannel of multiple cells is solved by the combination of the genetic algorithm and the tabu search algorithm. A new fitness function is defined and the process of this algorithm is given. Simulation shows that, compared with other algorithms, the proposed algorithm can reduce the system transmission power while guaranteeing the data rate requirement of all users, which improves the energy efficiency. 

Key words: orthogonal frequency division multiple access, power allocation, genetic algorithm, tabu search