Collaborative Caching and Reconfigurable Intelligent Surface for the Sub-THz Mobile System

被引：1
|
作者：
Obaid, Hadeel [1 ]
Zhu, Yongxu [2 ]
Tan, Bo [1 ]
机构：
[1] Tampere Univ, Fac Informat Technol & Commun Sci, Unit Elect Engn, Tampere 33014, Finland
[2] Southeast Univ, Natl Commun Res Lab, Nanjing 210096, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2024年 / 13卷 / 11期
关键词：
Reconfigurable intelligent surfaces; Attenuation; Backhaul networks; Wireless communication; Terahertz communications; System performance; Signal to noise ratio; Tera-hertz (THz); reconfigurable intelligent surface (RIS); caching placement; r-Lambert W function;
D O I：
10.1109/LWC.2024.3432928
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Enabling high-speed data services with minimal latency over high spectrums represents the evolution direction of the 6G system. This letter introduces a framework for enhancing wireless communication networks and addressing the limitation of the dynamic information accessing and blockage effect through the synergy of caching strategies and reconfigurable intelligent surfaces (RIS) on the sub-Terahertz (sub-THz) frequency band. We derive the achievable rate of the proposed system and show that caching the most popular content is the optimal strategy to maximize the system rate. We introduce a closed-form solution to determine the optimal user distance using a specialized form of the Lambert W function known as the r-Lambert W function.
引用
收藏
页码：2995 / 2999
页数：5
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