基于分组SIC的改进Q值多标签接入算法
Improved Q-value multi-tag access algorithm with SIC
夏雨涵 1王公仆1
作者信息
- 1. 北京交通大学计算机科学与技术学院，北京，100044
- 折叠
摘要
无源反向散射通信技术是环境物联网的关键技术，越来越受到人们的关注。在环境物联网通信中，多标签接入时会发生信号碰撞，影响系统的通信效率，在目前较常使用的EPCglobal Class1 Gen2（Gen2）通信协议中，规定使用基于动态帧时隙ALOHA（Dynamic Framed Slotted ALOHA，DFSA）的Q算法来防止多标签碰撞，然而该算法存在时隙资源浪费和接入吞吐率较低的问题。本文聚焦无源反向散射中的多标签接入问题，针对传统Q算法存在的不足，提出一种基于分组串行干扰消除（Successive interfenrence cancellation，SIC）的改进Q值多标签接入算法。首先，阐述了传统Q算法的算法流程和接入原理；接着，对提出的改进算法的算法流程和原理进行了详细介绍；最后，对于改进算法和传统Q算法进行了对比仿真实验。实验结果表明，提出的基于分组SIC的改进Q值接入算法显著提升了系统的接入吞吐率。Abstract
Passive backscatter communication technology is a key technology for the Ambient Internet of Things (AIoT) and is increasingly gaining attention. In the AIoT communication, signal collisions occur during multi-tag access, which affects the communication efficiency of the system. In the currently used EPCglobal Class1 Gen2 (Gen2) communication protocol, the Q algorithm based on DFSA (Dynamic Framed Slotted ALOHA) is used to prevent multi-tag collision. However, this algorithm has the problems of slot resource wastage and low access throughput. This paper focuses on the multi-tag access in passive backscatter communication and proposes an improved Q-value multi-tag access algorithm with SIC (Successive Interference Cancellation)in view of the deficiencies of the traditional Q algorithm. First, the algorithm flow and access principle of the traditional Q algorithm are expounded. Second, the algorithm flow and principle of the proposed improved algorithm are introduced in detail. Finally, a comparative simulation experiment between the improved algorithm and the traditional Q algorithm is conducted. The experimental results show that the proposed improved Q-value access algorithm withgrouped SIC significantly improves the access throughput of the system. 关键词
电信技术/多标签接入/串行干扰消除/环境物联网/无源反向散射Key words
Telecommunication technology/Muti-tag Access/Successive Interference Cancellation/Ambient IoT/Passive Backscatter引用本文复制引用
夏雨涵,王公仆.基于分组SIC的改进Q值多标签接入算法[EB/OL].(2025-04-27)[2025-12-13].http://www.paper.edu.cn/releasepaper/content/202504-222.学科分类
通信/无线通信/电子技术应用/半导体技术/无线电设备、电信设备
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