Fast and Arbitrary Beam Pattern Design for RIS-Assisted Terahertz Wireless Communication

TL;DR

This paper introduces a fast, non-iterative method for designing arbitrary beam patterns in RIS-assisted terahertz wireless systems, improving flexibility and speed over existing approaches.

Contribution

It establishes a novel link between RIS beam pattern design and 2D FIR filter design, proposing a new algorithm for rapid, arbitrary beam pattern creation.

Findings

The proposed method outperforms baseline algorithms in simulation.

It enables fast and flexible beam pattern design for RIS in terahertz communication.

The approach is promising for real-time applications in wireless systems.

Abstract

Reconfigurable intelligent surface (RIS) can assist terahertz wireless communication to restore the fragile line-of-sight links and facilitate beam steering. Arbitrary reflection beam patterns are desired to meet diverse requirements in different applications. This paper establishes relationship between RIS beam pattern design with two-dimensional finite impulse response filter design and proposes a fast non-iterative algorithm to solve the problem. Simulations show that the proposed method outperforms baseline method. Hence, it represents a promising solution for fast and arbitrary beam pattern design in RIS-assisted terahertz wireless communication.