摘要
OFDMA系统中的跨层资源分配问题是目前的研究热点。本文提出了基于自适应遗传算法的OFDMA系统跨层资源分配算法,利用自适应遗传算法群体多样性的特点提高算法的全局搜索能力,较好地解决了跨层资源分配问题。仿真结果表明,在满足用户间公平性的前提下,本文提出的改进算法有效提高了系统的频谱利用率及吞吐量,减小了用户的平均等待时延,提高服务质量。
The adaptive resource allocation based on cross-layer in OFDMA system is still the hot issue.This paper proposed an adaptive genetic algorithm based on cross-layer.The adaptive genetic algorithm has the characteristics of population diversity and comprehensive ability to global search,so,made it being a better solution to the cross-layer resource allocation.According to the experimental and simulation results,it is proved that,the improved algorithm in this paper enhanced the availability of frequency spectrum and throughput maximumly,is also shorter the user’s average wait delay,enhanced quality of service.
出处
《自动化技术与应用》
2010年第8期66-69,73,共5页
Techniques of Automation and Applications
关键词
OFDMA
跨层
资源分配
自适应遗传算法
OFDMA
cross-layer
resource allocation
adaptive genetic algorithm
