Secure RSMA for CF-mMIMO Systems With Low-Resolution DACs

作     者：Zhang, Yao Yang, Kaixi Xia, Wenchao Zhang, Jun Ni, Yiyang Lu, Weidang 

作者机构：Hangzhou Dianzi Univ Sch Commun Engn Hangzhou 310018 Peoples R China Zhejiang Normal Univ Coll Phys & Elect Informat Engn Jinhua 321004 Peoples R China Nanjing Univ Posts & Telecommun Dept Wireless Commun Key Lab Jiangsu Prov Nanjing 210003 Peoples R China Zhejiang Univ Technol Coll Informat Engn Hangzhou 310023 Peoples R China 

出 版 物：《IEEE WIRELESS COMMUNICATIONS LETTERS》 (IEEE Wireless Commun. Lett.)

年 卷 期：2024年第13卷第6期

页      面：1660-1664页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China 

主　　题：Rate-splitting multiple access cell-free massive multiple-input multiple-output low-resolution digital-to-analog converters secure transmission path-following algorithm 

摘      要：This letter presents an investigation into secure transmission in a downlink rate-splitting-aided cell-free massive multiple-input multiple-output system. By incorporating the low-resolution digital-to-analog converters and imperfect channel knowledge, we derive tight closed-form expressions for the data rate and secrecy rate under Ricean fading channels. Additionally, we formulate a power control problem with the objective of maximizing the weighted sum data rate, while ensuring a target secrecy rate for all user equipments. A path-following optimization algorithm is then proposed to determine its solution numerically. All theoretical analyses and the efficacy of the proposed algorithm are validated through extensive simulations.