Ambient Backscatter Communication With HARQ Assisted Hybrid Long-Short Packets

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS IEEE Communications Letters Pub Date : 2024-08-05 DOI:10.1109/LCOMM.2024.3438231

Liqin Shi;Jiayao Shi;Yinghui Ye;Gan Zheng;Guangyue Lu

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Abstract

This letter investigates the performance of an ambient backscatter communication (BackCom) network with hybrid automatic repeat request (HARQ) assisted hybrid long and short packets, where a base station transmits long packets to a cellular user while an Internet of Things (IoT) node performs short-packet BackCom with retransmissions. For the IoT node’s short-packet BackCom, we adopt both the HARQ with chase combining (HARQ-CC) scheme and the practical non-linear energy harvesting model and investigate scenarios involving short-packet retransmissions spanning single or multiple cellular transmission blocks, where the closed-form expression for the IoT node’s block error rate (BLER) is derived by considering the energy causality constraint and the decoding error in the process of successive interference cancellation. For the cellular long-packet transmission, the outage probability is derived. Simulation results illustrate the correctness of the derived expressions and show that the utilization of the HARQ-CC scheme demonstrates a notable enhancement in the IoT node’s BLER performance without observable impact on the outage probability.

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使用 HARQ 辅助混合长短数据包的环境反向散射通信

在该网络中，基站向蜂窝用户传输长数据包，而物联网（IoT）节点执行带重传的短数据包 BackCom。对于物联网节点的短数据包BackCom，我们采用了带追逐合并（HARQ-CC）的HARQ方案和实用的非线性能量收集模型，并研究了涉及跨越单个或多个蜂窝传输块的短数据包重传的场景，通过考虑能量因果关系约束和连续干扰消除过程中的解码误差，得出了物联网节点块错误率（BLER）的闭式表达式。对于蜂窝长包传输，还推导出了中断概率。仿真结果表明了推导表达式的正确性，并表明使用 HARQ-CC 方案可显著提高物联网节点的 BLER 性能，而不会对中断概率产生明显影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.

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