Hierarchical Codebook Design for Near-Field mmWave MIMO Communications Systems

IF 4.6 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2023-07-27 DOI:10.1109/LWC.2023.3299354

Jiawei Chen;Feifei Gao;Mengnan Jian;Wanmai Yuan

引用次数: 9

Abstract

Communications system with analog or hybrid analog/digital architectures usually relies on a pre-defined codebook to perform beamforming. With the increase in the size of the antenna array, the characteristics of the spherical wavefront in the near-field situation are not negligible. Therefore, it is necessary to design a codebook that is adaptive to near-field scenarios. In this letter, we investigate the hierarchical codebook design method in the near-field situation. We develop a steering beam gain approximation method and design the lower-layer codebook to provide coverage for the Fresnel region. For the upper-layer codebook, we propose beam rotation and beam relocation methods to place an arbitrary beam pattern to a target location. The simulation results show the superiority of the proposed near-field hierarchical codebook design.

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近场毫米波MIMO通信系统的分层码本设计

具有模拟或混合模拟/数字架构的通信系统通常依赖于预定义的码本来执行波束成形。随着天线阵列尺寸的增加，球面波阵面在近场情况下的特性不容忽视。因此，有必要设计一种适应近场场景的码本。在这封信中，我们研究了近场情况下的分层码本设计方法。我们开发了一种控制波束增益近似方法，并设计了较低层的码本来提供菲涅耳区域的覆盖。对于上层码本，我们提出了波束旋转和波束重定位方法，以将任意波束模式放置到目标位置。仿真结果表明了所提出的近场分层码本设计的优越性。

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 Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.