计算机工程与科学2025，Vol.47Issue(4)：644-654,11.DOI:10.3969/j.issn.1007-130X.2025.04.008
基于非线性能量收集的非线性信息状态更新系统的信息新鲜度分析
Information freshness analysis of nonlinear information state update system based on nonlinear energy harvesting
摘要
Abstract
This paper aims to address the trade-off between the nonlinear age of information(AoI)and the energy efficiency(EE)of time-sensitive amplified forwarding(AF)relay-assisted IoT systems in Nakagami-m fading channels.Firstly,an AF relay transmission model is proposed to find the end-to-end approximate signal-to-noise ratio(SNR).Secondly,the end-to-end block error probability of packet transmission is derived by considering the outdated channel state information(CSI)in the Nakagami-m fading channel.Finally,under the simultaneous consideration of non linear energy harvesting(EH)and outdated CSI,the statistical descriptions of the time duration for the sensor to fully charge its battery are derived as well as those of the time intervals of update packet delivery.As a result,the average AoI is achieved with closed-form expression and the trade-off model of nonlinear AoI to EE is established by simultaneously exploiting outdated CSI and non-linearity of EH circuit.The experimental results show that when the packet length is between 200～250 b and the source transmit power is 35 dBm,the AoI-EE achieves the optimum.关键词
非线性信息年龄/非线性能量收集/过时的信道状态信息/Nakagami-mKey words
nonlinear age of information(AoI)/nonlinear energy harvesting(EH)/outdated channel state information/Nakagami-m分类
电子信息工程引用本文复制引用
薛凯来,贾向东,韩向花,牛夏秧,张亮..基于非线性能量收集的非线性信息状态更新系统的信息新鲜度分析[J].计算机工程与科学,2025,47(4):644-654,11.基金项目
国家自然科学基金(62261048,61861039) （62261048,61861039）
甘肃省教育厅产业支撑计划项目(2025CYZC-014) （2025CYZC-014）
