基于智能超表面谐波调控的基波抑制ASK调制  

ASK Modulation With Fundamental Wave Suppression Using Harmonic Control on Reconfigurable Intelligent Surface

作　　者：严保将 贺冲[1] 李世源 展庆奎 YAN Baojiang;HE Chong;LI Shiyuan;ZHAN Qingkui(Department of Electronice Enginering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电子工程系,上海200240

出　　处：《移动通信》2023年第11期80-85,100,共7页Mobile Communications

基　　金：国家自然科学基金面上项目“基于时间调制的有源相控阵天线并行校准研究”(62271317)。

摘　　要：智能超表面作为下一代移动通信的重要技术,能够为移动通信的发展提供新范式,利用智能超表面的空时编码可以实现波束成型、信道估计和信息调控等。为了进一步研究利用智能超表面的谐波调控在数字通信系统中的应用,讨论了智能超表面在时间和空间上的编码,分析了控制时序对谐波的影响,并提出一种可以抑制基波的谐波幅度调控时序方案。仿真结果表明,提出的时序方案可以在各种占空比情况下将基波抑制在较低水平,实现数字码元的有效传输。Reconfigurable intelligent surface(RIS)has emerged as a cornerstone technology for next-generation mobile communications,ushering in a new paradigm for its development.Through the spatio-temporal coding techniques of RIS,it is possible to not only effectively achieve beamforming and channel estimation but also to precisely modulate information.This study delves into the application of harmonic control using RIS in digital communication systems.We provide an in-depth exploration of its coding strategies in both time and space and offer a detailed analysis of the impact of control sequencing on harmonic generation.Based on these insights,a novel harmonic amplitude modulation sequencing scheme is proposed,aimed at eficiently suppressing the fundamental wave.Simulation results verify that the proposed scheme can maintain the fundamental wave at a reduced level under various duty cycle conditions,ensuring the efficient transmission of digital symbols.

关 键 词：智能超表面 谐波调控 基波抑制 ASK调制 

分 类 号：TN929.52[电子电信—通信与信息系统]