移动通信2025，Vol.49Issue(5)：39-43,5.DOI:10.3969/j.issn.1006-1010.20250311-0002
无线网络控制系统的信道译码先验信息估计方法
Prior Information Estimation for Channel Decoding in Wireless Networked Control Systems
摘要
Abstract
The stability of wireless networked control systems is highly sensitive to transmission errors in wireless communication.Channel coding is a critical technique for improving communication performance;however,conventional channel decoding methods typically neglect the influence of prior information about transmitted bits.To address this issue,this paper proposes a prior information estimation method for channel decoding based on Kalman filtering.Specifically,the method first predicts the current sensor output and its probability density function using the control system model and Kalman filter.Then,it calculates the prior probabilities of the transmitted bits based on the prediction results.Finally,channel decoding is performed by jointly leveraging the estimated prior probabilities and the received signals,thus enhancing both decoding and control performance.Simulation results demonstrate that,at the communication layer,the proposed method achieves approximately a 0.42 dB gain compared to decoding without prior information when the control system is subject to disturbances,using a 64 bit LDPC code and a bit error rate of 10-2.At the control layer,the proposed method enables the control system to maintain a lower root mean square error under low signal-to-noise ratio conditions.关键词
无线网络控制系统/卡尔曼滤波/先验信息/信道编码Key words
wireless networked control systems/Kalman filtering/prior information/channel coding分类
电子信息工程引用本文复制引用
朴瑨楠,李栋,孙乙铭,李志博,杨明,钟珂珂..无线网络控制系统的信道译码先验信息估计方法[J].移动通信,2025,49(5):39-43,5.基金项目
国家自然科学基金资助项目"面向工业无线网络的极化编码信号传输理论与方法"(62201562) （62201562）
国家自然科学基金资助项目"生产制造流程的柔性构造理论方法与技术集成演示验证"(92367301) （92367301）
辽宁省自然科学基金资助项目"基于工业信道特性的极化编码性能分析理论与优化设计方法研究"(2024-BSBA-51) （2024-BSBA-51）
SIA基础研究计划项目"工业无线时变信道精准建模理论与信号传输方法"(2022JC1K08) （2022JC1K08）
兴辽英才计划项目"工业5G边云协同确定性技术与设备研究"(XLYC2203093) （XLYC2203093）
