信号处理2025，Vol.41Issue(10)：1681-1692,12.DOI:10.12466/xhcl.2025.10.008
无源RIS与有源中继辅助的短包通信系统性能研究
Performance Evaluation of Short-Packet Communication Systems Assisted by Passive RIS and Active Relays
摘要
Abstract
To address the limitations of passive reconfigurable intelligent surfaces(RIS)and active relays in enhancing short-packet communication(SPC)performance,this paper proposes a hybrid SPC system assisted by both a passive RIS and an active decode-and-forward(DF)relay.In the proposed system,the source node transmits short-packet data to the destination node with the cooperative assistance of the RIS and the DF relay.Following the DF protocol,the trans-mission slot is divided into two equal sub-slots.In the first sub-slot,the source node simultaneously transmits the signal to both the RIS and the relay;the RIS reflects the signal to the destination.If the relay successfully decodes the data,it forwards the decoded data to the destination in the second sub-slot,again assisted by the RIS.The destination node then applies maximum ratio combining(MRC)to coherently combine the received signals from both sub-slots.To evaluate the performance of the system,a closed-form expression for the overall block error rate(BLER)is derived.Monte Carlo simulation results confirm the accuracy of the analytical expression and demonstrate that the proposed system sig-nificantly improves BLER performance compared with existing methods.关键词
短包通信/可重构智能反射面/中继/误包率Key words
short-packet communication/reconfigurable intelligent surface/relay/block error rate分类
信息技术与安全科学引用本文复制引用
卫晨瑶,施丽琴,宋曦,叶迎晖,卢光跃..无源RIS与有源中继辅助的短包通信系统性能研究[J].信号处理,2025,41(10):1681-1692,12.基金项目
国家自然科学基金(62301421) （62301421）
西安科技协会青年人才基金资助项目(959202413084) The National Natural Science Foundation of China(62301421) （959202413084）
The Young Talent fund of University Association for Science and Technology in Xi'an(959202413084) （959202413084）
