基于自适应遗传算法的PLC信道动态子载波分配  

Dynamic subcarrier allocation of PLC channel based on adaptive genetic algorithm

作　　者：杨蓉 曹旺斌[1] 尹成群[1] YANG Rong;CAO Wangbin;YIN Chengqun(School of Electrical & Electronic Engineering,North China Electric Power University,Baoding 071003,China)

机构地区：[1]华北电力大学电气与电子工程学院

出　　处：《电力系统保护与控制》2019年第12期111-116,共6页Power System Protection and Control

基　　金：河北省科技计划项目资助(17211704D);中央高校基本科研业务费专项资金面上项目资助(2018MS096)~~

摘　　要：为提高宽带电力线通信(PLC)的传输速率,在2~100 MHz的低压宽带电力线信道条件下,提出基于速率最大化(RA)准则的动态子载波分配算法。该算法利用遗传算法比较好的全局搜索能力,将遗传算法与注水算法结合,对正交频分复用系统(OFDM)动态子载波进行自适应分配。新算法先将种群中的个体进行交叉操作,得到两个新的子代群体,对得到的子代种群进行复制和变异操作。仿真结果表明:改进之后的遗传算法与自适应遗传算法相比较,在性能上有较大改善,系统传输速率变快,信道容量变大。In order to improve the transmission rate of broadband Power Line Communication(PLC),a dynamic subcarrier allocation algorithm based on rate maximization(RA)principle is proposed under the condition of low-voltage broadband power line channel in 2~100 MHz.The algorithm exploits the better global search capability of genetic algorithm and combines the genetic algorithm and water injection algorithm to adaptively allocate subcarriers of Orthogonal Frequency Division Multiplexing(OFDM)system.In the new algorithm,it first cross-operates the individuals in the population to obtain two new progeny populations,and reproduces and mutates the obtained progeny populations.Compared with the adaptive genetic algorithm,simulation results show that the whole PLC system performance is improved,the system transmission rate is faster,and the channel capacity becomes larger.

关 键 词：电力线信道 信道模型 速率最大化(RA) 遗传算法 子载波分配 信道容量 

分 类 号：TN913.6[电子电信—通信与信息系统] TP18[电子电信—信息与通信工程]