Roadside beyond diagonal reconfigurable intelligent surfaces scattering matrix design for vehicular application

IF 1.9 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Physical Communication Pub Date : 2026-02-01 Epub Date: 2025-12-13 DOI:10.1016/j.phycom.2025.102963

Fatemeh Mozhdehjou , Mahmoud Atashbar , Hamed Alizadeh Ghazijahani

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引用次数: 0

Abstract

In high-mobility communication contexts, the rapidly fluctuating channel has a considerable effect on both the throughput and reliability of communications. Beyond diagonal reconfigurable intelligent surfaces (BD-RIS) alleviates the limitations of conventional reconfigurable intelligent surfaces (RIS) by enabling the flexible arrangement of elements, resulting in an enhancement of the maximum achievable rate. In this paper, a method is presented to design the scattering matrix for roadside BD-RIS with a flexible grouping strategy by maximizing the reflected channel gain. In the proposed method, to avoid the high computational burden, maximizing the upper bound of the channel gain is used for the design of the permutation function. Also, the scattering matrix of the classical grouping is designed by solving the optimization problem in a reference time block and is subsequently updated in non-reference blocks. Simulation results indicate that the presented approach outperforms the reference methods regarding channel gain.

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路边超对角线可重构智能表面散射矩阵设计在车辆中的应用

在高移动通信环境中，快速波动的信道对通信的吞吐量和可靠性都有相当大的影响。超对角线可重构智能表面（BD-RIS）通过实现元件的灵活排列，减轻了传统可重构智能表面（RIS）的局限性，从而提高了最大可实现速率。本文提出了一种基于灵活分组策略的路边BD-RIS散射矩阵设计方法，以最大化反射信道增益为目标。在该方法中，为了避免较高的计算量，采用最大化信道增益上界的方法来设计排列函数。同时，通过在参考时间块中求解优化问题来设计经典分组的散射矩阵，然后在非参考时间块中更新。仿真结果表明，该方法在信道增益方面优于参考方法。

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

Physical Communication ENGINEERING, ELECTRICAL & ELECTRONICTELECO-TELECOMMUNICATIONS

CiteScore

5.00

自引率

9.10%

发文量

212

审稿时长

55 days

期刊介绍： PHYCOM: Physical Communication is an international and archival journal providing complete coverage of all topics of interest to those involved in all aspects of physical layer communications. Theoretical research contributions presenting new techniques, concepts or analyses, applied contributions reporting on experiences and experiments, and tutorials are published. Topics of interest include but are not limited to: Physical layer issues of Wireless Local Area Networks, WiMAX, Wireless Mesh Networks, Sensor and Ad Hoc Networks, PCS Systems; Radio access protocols and algorithms for the physical layer; Spread Spectrum Communications; Channel Modeling; Detection and Estimation; Modulation and Coding; Multiplexing and Carrier Techniques; Broadband Wireless Communications; Wireless Personal Communications; Multi-user Detection; Signal Separation and Interference rejection: Multimedia Communications over Wireless; DSP Applications to Wireless Systems; Experimental and Prototype Results; Multiple Access Techniques; Space-time Processing; Synchronization Techniques; Error Control Techniques; Cryptography; Software Radios; Tracking; Resource Allocation and Inference Management; Multi-rate and Multi-carrier Communications; Cross layer Design and Optimization; Propagation and Channel Characterization; OFDM Systems; MIMO Systems; Ultra-Wideband Communications; Cognitive Radio System Architectures; Platforms and Hardware Implementations for the Support of Cognitive, Radio Systems; Cognitive Radio Resource Management and Dynamic Spectrum Sharing.