Precoder Design and Impulsive Noise Mitigation Scheme for Industrial Wireless Communications  

作　　者：Yanjing Sun Xinyan Li Jiasi Zhou Ruirui Chen BowenWang Yanfen Wang 

机构地区：[1]School of Information and Control Engineering,China University of Mining and Technology,Xuzhou 221008,Jiangsu,China [2]Xuzhou Engineering Research Center of Intelligent Industry Safety and Emergency Collaboration,Xuzhou 221008,Jiangsu,China

出　　处：《China Communications》2021年第4期182-197,共16页中国通信（英文版）

基　　金：supported in part by the National Natural Science Foundation of China under Grant 62071472;in part the Program for“Industrial Io T and Emergency Collaboration”Innovative Research Team in CUMT(No.2020ZY002)。

摘　　要：In industrial wireless scenarios,the impulsive noise(IN)incurred by machine running or operation causes a serious influence on the powerlimited industrial wireless communications.It is challenging to ensure efficient and reliable transmission with quality of service(QoS)guarantee for machinetype communication devices(MTCDs).Considering the IN in the industrial process,this paper establishes the multiuser multiple-input single-output(MU-MISO)orthogonal frequency division multiplexing(OFDM)system model,which combines transmitter and receiver design.Two precoding schemes are designed to improve communication effectiveness at the transmitter.More specifically,the precoder design scheme which combines semi-definite relaxation(SDR)with difference-of-two-convex-function(D.C.)iterative algorithm,is developed by utilizing the Dinkelbach method to improve the system effectiveness.To decrease the computational complexity,we devise the quadratic-based fractional programming(QFP)algorithm,which decouples the variables by using a quadratic transform method.On this basis,the IN mitigation scheme is studied to reduce the system error rate(SER)at the receiver.With the goal of improving the reliability of industrial wireless communications,we propose a hybrid nonlinear IN mitigation(HNINM)scheme and then derive its closed-form expression of SER.The simulation results show that the proposed QFP algorithm achieves superior performance while the HNINM scheme decreases the SER of industrial wireless communications.

关 键 词：Industrial wireless communications precoder design impulsive noise mitigation 

分 类 号：TN929.5[电子电信—通信与信息系统]