| 一种容量最大化的OFDMA资源分配算法 |
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| 引用本文： | 胡建武,张琦,余重秀,徐大雄.一种容量最大化的OFDMA资源分配算法[J].北京电子科技学院学报,2008,16(2):52-54. |
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| 作者姓名： | 胡建武 张琦 余重秀 徐大雄 |
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| 作者单位： | 北京邮电大学电子工程学院,北京,100876 |
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| 摘 要： | 针对功率受限的多用户OFDMA系统，提出了一种简化的子载波和功率分配算法，此算法在最大化系统容量的同时兼顾了用户间的公平性。算法首先依据当前的信道状况计算出各用户所需的载波数量，并分配子载波，然后以注水算法对各载波上的功率进行分配。仿真结果表明，以此算法对OFDMA的系统资源进行分配可显著提高系统的多项性能。
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| 关 键 词： | 正交频分复用多址接入 自适应分配 容量最大化 |
A Maximizing Capacity Resource Allocation Algorithm for OFDMA |
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| HU Jian-wu,ZHANG Qi,YU Chong-xiu,XU Da-xiong.A Maximizing Capacity Resource Allocation Algorithm for OFDMA[J].Journal of Beijing Electronic Science & Technology Institute,2008,16(2):52-54. |
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| Authors: | HU Jian-wu ZHANG Qi YU Chong-xiu XU Da-xiong |
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| Affiliation: | HU Jian- wu, ZHANG Qi, YU Chong- xiu, XU Oa- xiong (College of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China) |
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| Abstract: | Aim to power limited multiuser OFDMA system,a simplified subearrier and power allocation algorithm is proposed in this paper.This algorithm can simultaneously maximize system capacity and keep fairness among users.First it calculates amount of sub- carriers required by every user based on current channel status and allocates subcarrier,then do power allocation by waterfilling method.The simulation results show that the adaptive resource allocation algorithm proposed in this paper could remarkably improve many preformances of OFDMA systems. |
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| Keywords: | OFDMA Adaptive resource allocation Capacity Maximization |
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