MIMO Capacity Maximization With a Practical Model for Reconfigurable Intelligent Surfaces

被引：0

作者：

Sirojuddin, Ahmad ^{[1
]}

Suryani, Titiek ^{[1
]}

Suwadi, Mohamed-Slim

Wirawan ^{[1
]}

Alouini, Mohamed-Slim ^{[2
]}

机构：

[1] Inst Teknol Sepuluh Nopember, Dept Elect Engn, Surabaya 60111, Indonesia

[2] King Abdullah Univ Sci & Technol, Comp Elect & Math Sci & Engn Div, Thuwal 23955, Saudi Arabia

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2024年 / 13卷 / 12期

关键词：

Reconfigurable intelligent surfaces; MIMO communication; Reflection; Optimization; Vectors; Surface resistance; Relays; Capacity maximization; MIMO; reconfigurable intelligent surface; practical model RIS; information and communication technology;

D O I：

10.1109/LWC.2024.3461712

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Reconfigurable intelligent surface (RIS) is a cutting-edge technology projected to significantly enhance the spectrum and energy efficiency of current wireless communication systems. This letter addresses the problem of maximizing the capacity of practically modeled RIS-assisted single-point MIMO systems in which the reflective elements have inherent resistance. The solutions for the optimal power allocation and RIS phase shifts are obtained using the Newton-Raphson method and a modified gradient ascent algorithm, respectively. The numerical results show that the proposed method surpasses three benchmark systems in terms of the optimality of the achieved rate and the execution time.

引用

页码：3330 / 3334

页数：5

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