电力线通信宽带OFDM调制自适应分配仿真  

Simulation of Adaptive Modulation Allocation for Broadband OFDM in Power Line Communication

作　　者：万正兵 邓奕 WAN Zheng-bing;DENG Yi(School of Electronic Information Engineering,Hankou University,Wuhan Hubei 430212,China;School of Electronic and Electrical Engineering,Wuhan Textile University,Wuhan Hubei 430200,China)

机构地区：[1]汉口学院电子信息工程学院,湖北武汉430212 [2]武汉纺织大学电子与电气工程学院,湖北武汉430200

出　　处：《计算机仿真》2023年第5期244-247,261,共5页Computer Simulation

基　　金：2019年度湖北省高等学校优秀中青年科技创新团队计划项目(智能控制方向)(T201930)。

摘　　要：电力系统通信的不间断性和运行状态突变性等特点,导致电力线信道易受到多径、衰减、时变和频选的影响,资源出现分配失衡问题。为此,提出宽带OFDM电力线通信资源自适应分配方法。通过宽带OFDM调制和解调,建模分析电力线通信频带特性。基于此构建通信资源自适应分配模型,并采用遗传算法对该模型优化,实现宽带OFDM电力线通信资源自适应分配。为证明提出方法的有效性,设计实验验证其性能。结果表明,研究方法的分配比特数高于400bit,上述方法的应用下电力系统容量也更高,通信资源数据分配耗时平均值为13.80ms,以上数据充分说明所提方法的实用性更强。Currently,uninterrupted power system communication and sudden change of operation state may lead to unbalanced allocation of resources.Therefore,an adaptive resource allocation method for broadband OFDM power line communication was proposed.Through broadband OFDM modulation and demodulation,the frequency-band characteristics of power line communication were modeled and analyzed.On this basis,an adaptive allocation model of communication resources was constructed,and then the genetic algorithm was adopted to optimize the model,thus realizing the adaptive allocation of broadband OFDM power line communication resources.In order to prove the effec-tiveness of the method,an experiment was designed.The simulation result shows that the number of bits allocated by the proposed method is more than 400bit.And the power system capacity is also higher.The average time consump-tion of communication data allocation is 13.80ms.The above data fully prove that this method is more practical.

关 键 词：宽带技术 电力线通信资源 资源分配模型 遗传算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]