OFDMA系统中节能的遗传禁忌搜索功率分配  

Genetic and Tabu Search Power Allocation for Power Saving in OFDMA Systems

作　　者：张天魁[1] 郑洁莹[2] 曾志民[1] 

机构地区：[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

出　　处：《北京邮电大学学报》2010年第2期69-73,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：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)

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.A power allocation algorithm is proposed for multi-cell 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 co-frequency 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.

关 键 词：正交频分多址 功率分配 遗传算法 禁忌搜索 

分 类 号：TN929.53[电子电信—通信与信息系统]