基于时序差分的OFDM无线网络信道自适应分配方法  

Adaptive channel allocation method for OFDM wireless networks based on temporal difference

作　　者：田润丰 TIAN Runfeng(Information Department of Zhengzhou University First Affiliated Hospital,Zhengzhou 450000,China)

机构地区：[1]郑州大学第一附属医院信息科,河南郑州450000

出　　处：《电子设计工程》2025年第3期144-150,共7页Electronic Design Engineering

摘　　要：为减少OFDM无线网络信道之间的干扰,提升信道资源利用率,提出基于时序差分的OFDM无线网络信道自适应分配方法。通过OFDM无线网络信道中观测的时间序列数据时序差分化,识别信道冲突情况,以实现网络冲突值最小为目标,构建OFDM无线网络信道分配目标模型,将网络子载波与功率传输要求、网络节点通信量与信道分配的公平性作为约束条件;利用差分进化算法(DE)求解信道分配目标模型的过程中,引入自适应比例缩放因子;采用基于时序差分算法对DE算法中的变异和交叉过程进行优化,获得优质的OFDM无线网络信道自适应分配方案。实验证明:该方法的响应速度最大值在330 ms以下,可以有效控制链路间的冲突,减少信道之间的干扰,提高信道节点通信质量。In order to reduce channel interference and improve channel resource utilization in OFDM wireless networks,an adaptive channel allocation method for OFDM wireless networks based on temporal difference is proposed.The channel conflict is identified by time difference differentiation of time series data observed in OFDM wireless network channels.The channel allocation target model of OFDM wireless network is constructed to achieve the minimum network conflict value,and the network subcarrier and power transmission requirements,network node traffic and the fairness of channel allocation are taken as constraints.In the process of solving channel allocation target model by Differential Evolution(DE)algorithm,adaptive scaling factor is introduced.The variation and crossover processes in DE algorithm are optimized based on sequential difference algorithm to obtain a high quality channel adaptive allocation scheme for OFDM wireless networks.Experiments show that the maximum response speed of this method is less than 330 ms,which can effectively control the conflict between links,reduce the interference between channels,and improve the communication quality of channel nodes.

关 键 词：时序差分 OFDM网络 信道分配 网络冲突 差分进化算法 比例缩放因子 

分 类 号：TN929.5[电子电信—通信与信息系统]