Robust Link Adaptation in Multiantenna URLLC Systems With Flashlight Interference

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-08-28 DOI:10.1109/LCOMM.2024.3451018

Ugrasen Singh;Olav Tirkkonen

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引用次数: 0

Abstract

We present a robust link-adaptation method to realize ultra-reliable and low-latency communications (URLLC) against flashlight, i.e., on-off interference. A robust link-adaptation method is presented based on the measured signal-to-interference plus noise ratio (SINR) at the URLLC user, which varies between the time when interference power is measured and the time of payload transmission. We obtain the statistical distribution of the change of SINRs between two consecutive time slots and devise backoff methods guaranteeing the reliability of transmissions against flashlight interference. We derive the average transmission rate over Rayleigh fading channels in the considered system model. We observe that in the presence of flashlight interference, a strict reliability requirement reduces the transmission rate to a small fraction of the best effort service rate. When increasing the number of antennas at both the serving and interfering transmitters, the increase in array gain is partially compromised by the increased backoff needed to guarantee reliability. All analytical results are verified via Monte Carlo simulation.

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具有手电筒干扰的多天线 URLLC 系统中的鲁棒链路自适应

我们提出了一种稳健的链路适应方法，以实现超可靠和低延迟通信（URLLC），抵御手电筒（即开关干扰）。我们根据在 URLLC 用户处测量到的信号干扰加噪声比（SINR），提出了一种稳健的链路适应方法，SINR 在干扰功率测量时间和有效载荷传输时间之间变化。我们获得了两个连续时隙之间 SINR 变化的统计分布，并设计了保证传输可靠性不受手电筒干扰影响的后退方法。在所考虑的系统模型中，我们得出了瑞利衰落信道的平均传输速率。我们发现，在存在手电筒干扰的情况下，严格的可靠性要求会将传输速率降低到尽力服务速率的一小部分。当增加服务发射机和干扰发射机的天线数量时，阵列增益的增加部分会因保证可靠性所需的后退时间增加而受到影响。所有分析结果都通过蒙特卡罗模拟进行了验证。

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.