崔亦军
1,2，窦建武
1,2，刘怡平
1,2,3
（1. 中兴通讯股份有限公司，中国 深圳 518057；2. 移动网络和移动多媒体技术国家重点实验室，中国 深圳 518055; 3.西安电子科技大学广州研究院，中国 广州 510555）
摘要：基于傅里叶光学中标量衍射理论，研究了可重构智能超表面（RIS）物理波束调控的码本设计方法，包括波束宽窄、波束指向和波束旋转；同时仿真分析了RIS单元相位比特量化精度对RIS波束方向图的影响。相关方法对实时快速生成RIS波束跟踪对应的RIS码本非常有效。
关键词：可重构智能超表面；傅里叶光学；码本设计；啁啾函数；衍射；角谱
RIS Code Book Design Based on Scalar Diffraction Theory
CUI Yijun1,2, DOU Jianwu1,2, LIU Yiping1,2,3
(1. ZTE Corporation, Shenzhen 518007, China; 2. State Key Laboratory of Mobile Network and Mobile Multimedia Technology，Shenzhen 518005, China; 3. Guangzhou Institute of Technology, Xidian University, Guangzhou 510555, China)
Abstract: Based on the scalar theory of diffraction in Fourier optics, the approach of the code book design for reconfigurable intelligent surface (RIS) is proposed, including designing the width of the beam, and manipulating the direction as well as the rotation of the beam. The influence on the beam pattern is also studied considering the granularity of phase quantization based on simulation. The approach proposed is effective and useful in the fast code book generation for a real-time RIS beam tracking.
Keywords: reconfigurable intelligent surface; Fourier optics; code book design, chirp function; diffraction; angular spectrum
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