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可变速率HARQ-IR辅助太赫兹通信系统的可靠性分析 认领

Reliability Analysis of Variable-rate HARQ-IR Aided Terahertz Communication System
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摘要 严重的路径损耗、天线对不准以及大气湍流等造成太赫兹通信可靠性下降,利用混合自动重发请求(Hybrid Automatic Repeat Request,HARQ)技术可以有效解决其可靠性问题。为更高效利用太赫兹通信的宽带...展开更多 Severe path loss,antenna misalignment,and atmospheric turbulence significantly degrade the reliability of Terahertz communication.Hybrid Automatic Repeat Request(HARQ)is an effective solution to boost system reliability.To take advantage of the wideband of Terahertz com...MORE Severe path loss,antenna misalignment,and atmospheric turbulence significantly degrade the reliability of Terahertz communication.Hybrid Automatic Repeat Request(HARQ)is an effective solution to boost system reliability.To take advantage of the wideband of Terahertz communications,this paper proposes a variable-rate HARQ Incremental Redundancy(IR)—HARQ-IR—to assist Terahertz communications.This paper thoroughly investigates the reliability of the proposed variable-rate HARQ-IR scheme.Since the outage probability is a key performance metric for characterizing the reliability,this paper derives a closed-form expression for the outage probability of variable-rate HARQ-IR-assisted Terahertz communication using Mellin transform and special function theory.However,the exact outage expression is too complex,making it challenging to uncover its physical insights.Therefore,the paper further examines the asymptotic outage probability under high signal-to-noise ratio conditions.By capitalizing on the residue theorem,a closed-form expression for the asymptotic outage probability is deduced.On this basis,the asymptotic results reveal that the proposed variable-rate HARQ-IR-assisted Terahertz communications can achieve full time diversity.Besides,the diversity order also depends on path fading and pointing errors.Additionally,the modulation and coding gain are independent of the order of transmission rates across different HARQ rounds.Finally,plenty of numerical results validate the correctness of our theoretical analysis.FEWER
作者 窦庆萍 何富超 张益 李永康 施政 杨光华 马少丹 DOU Qingping;HE Fuchao;ZHANG Yi;LI Yongkang;SHI Zheng;YANG Guanghua;MA Shaodan(School of Intelligent Systems Science and Engineering,Jinan University,Zhuhai 519070,China;State Key Laboratory of Internet of Things for Smart City,University of Macao,Macao 999074,China)
机构地区 暨南大学智能科学与工程学院 澳门大学智慧城市物联网国家重点实验室
出处 《无线电通信技术》 北大核心 2026年第1期107-117,共11页 Radio Communications Technology
基金 国家自然科学基金资助项目(62171200,62171201) 广东省自然基金面上项目(2023A1515010900) 国家自然科学基金国际(区域)合作与交流项目(62261160650)。
关键词 太赫兹通信 混合自动重传请求增量冗余 可靠性 α-μ衰落信道 Terahertz communications HARQ-IR reliability α-μfading channels
分类号 TN92 [电子电信—通信与信息系统]
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无线电通信技术
2026年 第1期
科创助手
论文智评
维普砚承
维普斟知

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