ROMA: Rotary and Movable Antenna

IF 5.5 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2025-04-28 DOI:10.1109/LWC.2025.3564595

Jiayi Zhang;Wenhui Yi;Bokai Xu;Zhe Wang;Huahua Xiao;Bo Ai

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引用次数: 0

Abstract

The rotary and movable antenna (ROMA) architecture represents a next-generation multi-antenna technology that enables flexible adjustment of antenna position and array rotation angles of the transceiver. In this letter, we propose a ROMA-aided multi-user MIMO communication system to enhance the efficiency and reliability of system transmissions fully. By deploying ROMA panels at both the transmitter and receiver sides, and jointly optimizing the three-dimensional (3D) rotation angles of each ROMA panel and the relative positions of antenna elements based on the spatial distribution of users and channel state information (CSI), we can achieve the objective of maximizing the average spectral efficiency (SE). Subsequently, we conduct a detailed analysis of the average SE performance of the system under the consideration of maximum ratio (MR) precoding. Due to the non-convexity of the optimization problem in the ROMA multi-user MIMO system, we propose an efficient solution based on an alternating optimization (AO) algorithm. Finally, simulation results demonstrate that the AO-based ROMA architecture can significantly improve the average SE. Furthermore, the performance improvement becomes more pronounced as the movable region and the transmission power increase.

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ROMA：旋转和移动天线

旋转和移动天线（ROMA）架构代表了下一代多天线技术，可以灵活调整收发器的天线位置和阵列旋转角度。为了充分提高系统传输的效率和可靠性，本文提出了一种基于roma的多用户MIMO通信系统。通过在发射端和接收端同时部署ROMA面板，并根据用户空间分布和信道状态信息（CSI）共同优化每个ROMA面板的三维旋转角度和天线单元的相对位置，可以实现平均频谱效率（SE）最大化的目标。随后，我们对考虑最大比率（MR）预编码的系统的平均SE性能进行了详细分析。针对ROMA多用户MIMO系统优化问题的非凸性，提出了一种基于交替优化（AO）算法的高效解决方案。最后，仿真结果表明，基于ao的ROMA架构可以显著提高平均SE。此外，随着可移动面积的增大和传输功率的增大，性能的改善更加明显。

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.