面向工业自组织网络混响衰落信道模拟的双目标优化方法  

A Bi-Objective Optimization Approach for Reverberation Fading Channel Simulation in Industrial Ad-Hoc Networks

作　　者：杨璇 祁伟 秦飞 YANG Xuan;QI Wei;QIN Fei(School of Electronic and Electrical Communication Engineering,University of Chinese Academy of Sciences,Beijing 101408,China)

机构地区：[1]中国科学院大学电子电气与通信工程学院,北京101408

出　　处：《移动通信》2023年第10期51-57,共7页Mobile Communications

基　　金：国家自然科学基金面上项目“机理建模数据驱动的工业无线网络延时分布控制方法研究”(62071450);国家重点研发计划“海上多波段云雾观测设备研制及示范应用”(2021YFC3090204);中央高校基本科研业务费专项资金。

摘　　要：传统信道模拟方法针对室外信道提出,难以满足工业自组织网络设备研制中混响信道连续冲激响应的模拟需求。通过使用较低阶的无限冲激响应数字滤波器(IIR)逼近工业混响信道连续冲激响应特征,提出了同时纳入滤波器阶数与响应误差的双目标优化目标函数,从而在IIR滤波器复杂度和模拟精度之间寻求平衡。仿真结果表明,与现有的平衡截断法和多项式放等方案相比,所提算法得到的滤波器复杂度更低,且模拟精度更高。Wireless Ad-hoc networks are playing an increasingly important role in Industry 4.0 by enhancing the sensing and controlling of industrial systems,thereby improving production efficiency.However,the industrial environment poses challenges for wireless communications due to the metal reflections,resulting in continuous distribution characteristics in reverberant channels.Consequently,designing transceivers,modulation schemes,and coding algorithms become increasingly complex.To ensure the reliability and performance of industrial wireless Ad-hoc networks,it is crucial to thoroughly test and evaluate algorithms,devices,and protocols.Unfortunately,it is dificult to simulate these reverberant channels accurately.Traditional general-purpose channel simulators often rely on the FIR filter structures,leading to ultra-high-order systems that are impractical for hardware system deployment.In this paper,we propose a novel approach that optimizes both flter order and response error in a dual-objective optimization function.Our aim is to approximate the continuous impulse response characteristics of industrial reverberant channels using the lower-order IIR filters.This approach strikes a balance between the filter complexity and the simulation accuracy of the IIR filters.Compared with the existing schemes such as the balanced truncation and polynomial methods,simulation results demonstrate that the filters obtained with the proposed algorithm have a lower complexity and higher simulation accuracy.

关 键 词：工业自组网络 信道模拟器 FIR IIR 多目标优化 

分 类 号：TN929.5[电子电信—通信与信息系统]