Resource allocation algorithm based on PSO-GA for multi-user OFDM system

被引：0
作者：
Zhang, Hao-Ye [1 ]
Mei, Jin-Ping [2 ]
Zhang, Shi-Bing [2 ]
机构：
[1] Nantong Branch, China Mobile Group Jiangsu Company Limited, Nantong
[2] School of Electronics and Information, Nantong University, Nantong
来源：
Journal of Electronic Science and Technology | 2015年 / 13卷 / 01期
关键词：
Bit allocation; Orthogonal frequency division multiplexing; Particle swarm optimization algorithm with genetic algorithm; Sub-carriers allocation;
D O I：
10.3969/j.issn.1674-862X.2015.01.012
中图分类号：
学科分类号：
摘要：
In order to minimize the transmitted power in the multi-user orthogonal frequency division multiplexing (OFDM) system, a scheme combining the improved particle swarm optimization (POS) algorithm with genetic algorithm (GA) is proposed to optimize the sub-carriers and bits allocation. In the algorithm, a random velocity between the maximum and minimum particle velocity is used as the updating velocity instead of maximum or minimum velocity when the updated particle velocity is higher than the maximum particle velocity or lower than the minimum particle velocity. Then, the convergence population is used as the initial population of the genetic algorithm to optimize the subcarriers and bits allocation further. Simulation results show that the transmitted power of the proposed algorithm is about 2 dB to 10 dB lower than that of the genetic algorithm, particle swarm optimization algorithm, and Zhang's algorithm.
引用
收藏
页码：68 / 72
页数：4
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