Secure symbol level precoding for cell-free network based on band-region constraint of the eavesdropper’s receiving signal  

作　　者：LI Zewen JIN Yong FU Chunling PENG Xin HU Zhentao 李泽文;JIN Yong;FU Chunling;PENG Xin;HU Zhentao(School of Artifical Intelligence,Henan University,Zhengzhou 450000,P.R.China;School of Physics and Electronics,Henan University,Kaifeng 475000,P.R.China)

机构地区：[1]School of Artifical Intelligence,Henan University,Zhengzhou 450000,P.R.China [2]School of Physics and Electronics,Henan University,Kaifeng 475000,P.R.China

出　　处：《High Technology Letters》2024年第3期304-309,共6页高技术通讯（英文版）

基　　金：the National Natural Science Foundation of China(No.61976080);the Key Research Projects in Henan Province of China(No.231111212500).

摘　　要：A symbol level secure precoding scheme based on band-region constraint of the eavesdropper’s receiving signal is proposed to enhance the energy efficiency of cell-free multiple-input multiple-output(MIMO)networks in the presence of an eavesdropper while guaranteeing the quality of service(QoS)of user and the security of system.Moreover,to lighten its high computational complexity,original problem is divided into several cascade sub-problems firstly,and then those sub-problems are handled by combining Lagrangian dual function and improved Hooke-Jeeves method together.Comparative ex-periment with other secure symbol-level precoding schemes demonstrate that proposed scheme can achieve the lower power consumption with almost same symbol error rate and QoS of user.

关 键 词：cell-free symbol-level precoding(SLP) physical layer security(PLS) multi-ple-input multiple-output(MIMO) band-region constraint 

分 类 号：TN918.3[电子电信—通信与信息系统]