A Demo of Radar Sensing Aided Rotatable Antenna for Wireless Communication System

TL;DR

This paper demonstrates a radar sensing-aided rotatable antenna prototype that dynamically aligns with a receiver to improve wireless communication performance, showing significant SNR improvements over fixed antennas.

Contribution

It introduces a novel radar sensing-integrated rotatable antenna system that enhances wireless communication by adaptive orientation, with a low-cost hardware implementation.

Findings

RA significantly increases received SNR compared to fixed antennas

Prototype effectively detects receiver location and aligns antenna orientation

Experimental results validate improved communication performance

Abstract

Rotatable antenna (RA) represents a novel antenna architecture that enhances wireless communication system performance by independently or collectively adjusting each antenna's boresight/orientation. In this demonstration, we develop a prototype of radar sensing-aided rotatable antenna that integrates radar sensing with dynamic antenna orientation to enhance wireless communication performance while maintaining low hardware costs. The proposed prototype consists of a transmitter (TX) module and a receiver (RX) module, both of which employ universal software radio peripherals (USRPs) for transmitting and receiving signals. Specifically, the TX utilizes a laser radar to detect the RX's location and conveys the angle of arrival (AoA) information to its antenna servo, which enables the RA to align its boresight direction with the identified RX. Experimental results examine the effectiveness of the proposed prototype and indicate that the RA significantly outperforms the traditional fixed-antenna system in terms of increasing received signal-to-noise ratio (SNR).