文献类型：期刊文献

英文题名：Performance Analysis for Multi-Tag Symbiotic Radio Systems With Channel Estimation Errors

作者：Liu, Yingting Cai, Lingqi Li, Xingwang Ma, Zhongyu Zhang, Hui

第一作者：Liu, Yingting

机构：[1] Lanzhou Jiaotong University, School of Electronic and Information Engineering, Lanzhou, 730070, China; [2] Henan Polytechnic University, School of Physics and Electronic Information Engineering, Jiaozuo, 454000, China; [3] Northwest Normal University, College of Artificial Intelligence and Computer Science, Lanzhou, 730070, China; [4] Guizhou Institute of Technology, Institute of Mining Engineering, Guiyang, 550003, China

第一机构：Lanzhou Jiaotong University, School of Electronic and Information Engineering, Lanzhou, 730070, China

通信机构：Lanzhou Jiaotong University, School of Electronic and Information Engineering, Lanzhou, 730070, China

年份：2026

外文期刊名：IEEE Transactions on Vehicular Technology

收录：EI(收录号：20262921118464);Scopus(收录号：2-s2.0-105044735664)

语种：英文

外文关键词：Backscattering - Channel capacity - Diversity reception - Mobile telecommunication systems - Radio systems - Random errors - Signal receivers

摘要：In this paper, the performance of a symbiotic radio (SR) system with channel estimation errors (CEEs) is investigated. The considered SR system consists of a direct link between the base station (BS) and the receiver (R), along with backscatter links between multiple tags and R. The BS transmits its information to R, while the tags modulate their own information on the BS signal and backscatter the modulated signal to R. To avoid the information collision, two multiple-access schemes, namely random selection access (RSA) and selection diversity access (SDA), are proposed to support the joint reception of the BS signal and the tag signal. On the consideration of CEEs, the closed-form approximations for the outage probabilities and ergodic capacities of both the cellular transmission of the BS signal and the backscatter communication (BackCom) transmission of the tag signal are derived. Numerical results are provided to examine the impact of key system parameters on the performance of both transmissions. The simulation results validate the accuracy of the derived expressions and show that CEEs significantly degrade the performance of both the cellular and BackCom transmissions. ? 1967-2012 IEEE.