Deep Q-Network Enabled Low Complexity Beam Alignment for mmWave Massive MIMO System

IF 4.4 3区 计算机科学 Q2 TELECOMMUNICATIONS
Jing Xu;Hua Zhang;Simeng Fan;Wujie Fan
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引用次数: 0

Abstract

In this letter, we model the beam alignment problem in millimeter-wave massive MIMO system as a Markov decision process. Given the highly dynamic environment, we leverage deep reinforcement learning to solve the non-convex beam alignment problem. Specifically, by leveraging the locations of the target vehicle and its neighboring vehicles, we propose a deep Q-network (DQN)-based beam alignment algorithm with lower computation complexity. In addition, to address the issue of model obsolescence caused by the changed traffic density, an online mode is elaborated to dynamically adjust to changing environments. Simulation results show that the proposed DQN scheme has better alignment performance and lower complexity than the existing baseline schemes.
基于深q网络的毫米波大规模MIMO系统低复杂度波束对准
本文将毫米波大规模MIMO系统中的波束对准问题建模为马尔可夫决策过程。考虑到高度动态的环境,我们利用深度强化学习来解决非凸梁对准问题。具体而言,我们利用目标车辆及其相邻车辆的位置,提出了一种计算复杂度较低的基于深度q网络(DQN)的波束对准算法。此外,针对交通密度变化导致的模型陈旧问题,提出了一种在线模式,可以根据环境变化进行动态调整。仿真结果表明,所提出的DQN方案比现有的基线方案具有更好的对准性能和更低的复杂度。
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
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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