一种新的基于OFDMA的跨层资源分配方法

对OFDMA系统中的跨层资源的分配问题进行研究。提出了一种基于自适应遗传算法的跨层资源分配算法,利用自适应遗传算法综合能力和全局搜索的特点,提高算法的全局搜索能力,很好地解决了跨层资源分配问题。在满足用户之间公平性的前提下,改进算法有效提高了系统频谱利用率及吞吐量,也缩短了用户平均等待时间,提高服务品质。

New Cross-layer Resource Allocation Algorithm Based on OFDMA

This paper researches on the adaptive resource allocation based on cross-layer in OFDMA system and proposes an adaptive genetic algorithm based on cross-layer.The adaptive genetic algorithm is characteristic of comprehensive ability and global search,so that it makes the cross-layer resource allocation betler solved.According to the experimental and simulation results,it is proved that the improved algorithm enhances the availability of frequency spectrum and throughput,shortens the user’s average wait time and improves the quality of service.