| 摘要: |
| 在多小区OFDMA系统中，基于集中式资源管理，考虑本小区对其它小区的干扰情况，
对各个小区的子载波和功率分配进行调整，从而达到最小化总功率的目的。基于离散功率取
值，提出了一个资源分配组合优化问题模型。为了进一步降低模型复杂度，采用罚函数的方
法简化问题模型，用改进的模拟退火算法进行求解。理论分析和仿真结果表明，与A. Abrar
do 提出的多分配算法相比，所提出的算法能够有效降低算法复杂度，且能够获得更好的
吞吐量。 |
| 关键词: 多小区OFDMA系统 资源分配 罚函数 模拟退火 |
| DOI： |
|
| 基金项目:广东省自然科学基金资助项目(8151064101000066) |
|
| A Penalty SA Based Resouce Allocation Algorithm for OFDMA Cellular Systems |
| JI Chun-mei,CHEN Fang-jiong |
| (School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,China) |
| Abstract: |
| Considering the interference from other cells, the total power is minimized in
OFDMA cellular systems by adjusting the subcarrier
s and power allocation with a central allocation approach. A combinatorial optim
ization model for resource allocation is proposed based on dis
crete power. In order to decrease the complexity of the model, penalty fu
nction algorithm is used to remove one constraint, then modified simulation anne
alin
g(SA) algorithm is used to solve the model. Theoretical analysis and experimenta
l results sh
ow that, compared with A. Abrardo’s multi-assignment algorithm, the proposed al
gorithm ca
n effectively decrease the complexity while gain a better throughput. |
| Key words: OFDMA cellular system resource allocation penalty function simulation anneali
ng |
《电讯技术》编辑部 