摘要
在正交频分多址(OFDMA)系统中,合理的资源分配对于提升系统的能效具有重要的意义。针对多用户OFDMA系统,对最大化系统能效为目标的资源分配算法进行研究,提出了基于智能水滴算法的全连通图资源分配模型,该模型以全连通图的顶点和边来表示用户与子载波之间的对应关系,在此基础上进一步对智能水滴算法进行改进。仿真结果表明,在满足用户Qo S的条件下,所提出的改进的智能水滴算法的全连通图资源分配方案能够有效提高系统能效,提升系统性能。
Reasonable resource allocations on OFDMA system play an important role in enhancing system performance. The research of multi-user 0FDMA system was mainly aimed at the resource allocation algorithm maximizing system energy efficien- cy. This paper proposed an allocation model of totally connected graph based on intelligent water drops algorithm, and vertices and edges of totally connected graph on this model could express the corresponding relationship between user and subcarrier. Finally, based on this, it improved the intelligent water drops algorithm further. The simulation results indicate that under meeting the needs of user QoS（ quality of service） , the totally connected graph resource allocation scheme based on optimized intelligent water drops algorithm can effectively increase energy efficiency and promote system performance.
作者
毛攀
刘紫燕
Mao Pan Liu Ziyan(College of Big Data ＆ Information Engineering, Guizhou University, Guiyang 550025, Chin)
出处
《计算机应用研究》
CSCD
北大核心
2017年第9期2737-2740,2762,共5页
Application Research of Computers
基金
国家自然科学基金资助项目(61263005)
贵州省科学技术基金资助项目(黔科合基础[2016]1054)
贵州省本科教学工程项目(5JJG201505)
关键词
正交频分多址
能效
资源分配
智能水滴
orthogonal frequency division muhiple access（OFDMA）
energy-efficient
resource allocation
intelligent water drops
