| OFDMA系统中基于遗传算法的资源分配 |
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| 引用本文： | 郁宇,周武旸. OFDMA系统中基于遗传算法的资源分配[J]. 计算机仿真, 2008, 25(5): 143-146 |
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| 作者姓名： | 郁宇 周武旸 |
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| 作者单位： | 中国科学技术大学个人通信与扩频实验室,安徽,合肥,230027;中国科学技术大学个人通信与扩频实验室,安徽,合肥,230027 |
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| 基金项目： | 国家自然科学基金 , NCET资助 |
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| 摘 要： | 资源分配是OFDMA系统中保证用户QoS和提高系统容量的一种重要手段.在传统的OFDMA资源分配算法中,分组调度和子载波分配两部分是独立进行优化的.为了进一步提高系统的整体性能,提出一种基于遗传算法的分组调度和子载波分配联合优化的资源分配算法.资源分配算法中,利用随机逼近的方法来更新调度算法中的控制参数,在保证用户公平性的前提下最大化系统吞吐量;利用遗传算法来求解联合优化中的子载波分配.仿真结果表明,无论是在系统的吞吐量、丢包率,数据包等待时延还是用户公平性方面,都具有良好的性能.
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| 关 键 词： | 正交频分复用接入 分组调度 子载波分配 遗传算法 |
| 文章编号： | 1006-9348(2008)05-0143-04 |
| 修稿时间： | 2007-05-30 |
Resource Allocation for OFDMA System Based on Genetic Algorithm |
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| YU Yu,ZHOU Wu-yang. Resource Allocation for OFDMA System Based on Genetic Algorithm[J]. Computer Simulation, 2008, 25(5): 143-146 |
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| Authors: | YU Yu ZHOU Wu-yang |
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| Affiliation: | YU Yu,ZHOU Wu-yang (PCN&SS Lab,University of Science , Technology of China,Heifei Anhui 230027,China) |
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| Abstract: | Resource allocation is a very important measure to provide QoS and improve system throughput in OFDMA system. In traditional resource allocation, the packet scheduling and subcarrier allocation are optimized independently. In order to improve the overall system performance, a resource allocation algorithm based on genetic algorithm is proposed, in which the packet scheduling and subcarrier allocation are jointly optimized. The proposed algorithm uses stochastic approximation methods to control the parameter... |
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| Keywords: | OFDMA Packet scheduling Subcarriers allocation Genetic algorithms |
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